US20160030453A1 - Methods of increasing oral bioavailability of tetracyclines - Google Patents
Methods of increasing oral bioavailability of tetracyclines Download PDFInfo
- Publication number
- US20160030453A1 US20160030453A1 US14/789,506 US201514789506A US2016030453A1 US 20160030453 A1 US20160030453 A1 US 20160030453A1 US 201514789506 A US201514789506 A US 201514789506A US 2016030453 A1 US2016030453 A1 US 2016030453A1
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- US
- United States
- Prior art keywords
- alkyl
- alkenyl
- aryl
- alkynyl
- compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000004098 Tetracycline Substances 0.000 title claims abstract description 125
- 235000019364 tetracycline Nutrition 0.000 title claims abstract description 125
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000001965 increasing effect Effects 0.000 title claims abstract description 8
- 150000003522 tetracyclines Chemical class 0.000 title description 39
- 229940040944 tetracyclines Drugs 0.000 title description 31
- -1 tetracycline compounds Chemical class 0.000 claims abstract description 159
- 229930101283 tetracycline Natural products 0.000 claims abstract description 95
- 229960002180 tetracycline Drugs 0.000 claims abstract description 94
- 125000000217 alkyl group Chemical group 0.000 claims description 75
- 125000003118 aryl group Chemical group 0.000 claims description 53
- 125000003342 alkenyl group Chemical group 0.000 claims description 52
- 125000000304 alkynyl group Chemical group 0.000 claims description 52
- 150000001875 compounds Chemical class 0.000 claims description 52
- 239000001257 hydrogen Substances 0.000 claims description 41
- 229910052739 hydrogen Inorganic materials 0.000 claims description 41
- 125000003545 alkoxy group Chemical group 0.000 claims description 37
- 239000003795 chemical substances by application Substances 0.000 claims description 37
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 35
- 230000002708 enhancing effect Effects 0.000 claims description 34
- 150000002431 hydrogen Chemical group 0.000 claims description 30
- 125000003282 alkyl amino group Chemical group 0.000 claims description 29
- 229910052736 halogen Chemical group 0.000 claims description 29
- 150000002367 halogens Chemical group 0.000 claims description 29
- 125000004414 alkyl thio group Chemical group 0.000 claims description 27
- 125000000623 heterocyclic group Chemical group 0.000 claims description 26
- 125000004644 alkyl sulfinyl group Chemical group 0.000 claims description 25
- 150000003839 salts Chemical class 0.000 claims description 25
- 125000002252 acyl group Chemical group 0.000 claims description 21
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 21
- 229910052760 oxygen Inorganic materials 0.000 claims description 20
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 19
- 125000004390 alkyl sulfonyl group Chemical group 0.000 claims description 18
- 210000001035 gastrointestinal tract Anatomy 0.000 claims description 17
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 17
- 125000001072 heteroaryl group Chemical group 0.000 claims description 16
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 14
- 239000000651 prodrug Chemical group 0.000 claims description 14
- 229940002612 prodrug Drugs 0.000 claims description 14
- 125000004448 alkyl carbonyl group Chemical group 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 125000005196 alkyl carbonyloxy group Chemical group 0.000 claims description 11
- 125000005199 aryl carbonyloxy group Chemical group 0.000 claims description 11
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 11
- 229920000053 polysorbate 80 Polymers 0.000 claims description 11
- 125000001769 aryl amino group Chemical group 0.000 claims description 10
- 125000004663 dialkyl amino group Chemical group 0.000 claims description 10
- 150000002148 esters Chemical class 0.000 claims description 10
- 229910052717 sulfur Inorganic materials 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 125000004453 alkoxycarbonyl group Chemical group 0.000 claims description 9
- 125000005194 alkoxycarbonyloxy group Chemical group 0.000 claims description 9
- 125000004457 alkyl amino carbonyl group Chemical group 0.000 claims description 9
- 125000005129 aryl carbonyl group Chemical group 0.000 claims description 9
- 125000005110 aryl thio group Chemical group 0.000 claims description 9
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 claims description 8
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 8
- 239000008194 pharmaceutical composition Substances 0.000 claims description 8
- 239000000244 polyoxyethylene sorbitan monooleate Substances 0.000 claims description 8
- 229940068968 polysorbate 80 Drugs 0.000 claims description 8
- 125000004103 aminoalkyl group Chemical group 0.000 claims description 6
- 125000005018 aryl alkenyl group Chemical group 0.000 claims description 6
- 125000005015 aryl alkynyl group Chemical group 0.000 claims description 6
- 239000003937 drug carrier Substances 0.000 claims description 6
- 210000001198 duodenum Anatomy 0.000 claims description 6
- 239000002702 enteric coating Substances 0.000 claims description 6
- 238000009505 enteric coating Methods 0.000 claims description 6
- 125000002485 formyl group Chemical group [H]C(*)=O 0.000 claims description 6
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- 230000035699 permeability Effects 0.000 claims description 6
- 239000003921 oil Substances 0.000 claims description 5
- 210000000813 small intestine Anatomy 0.000 claims description 5
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 4
- 125000003368 amide group Chemical group 0.000 claims description 4
- 125000003435 aroyl group Chemical group 0.000 claims description 4
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims description 4
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 4
- HBAQYPYDRFILMT-UHFFFAOYSA-N 8-[3-(1-cyclopropylpyrazol-4-yl)-1H-pyrazolo[4,3-d]pyrimidin-5-yl]-3-methyl-3,8-diazabicyclo[3.2.1]octan-2-one Chemical class C1(CC1)N1N=CC(=C1)C1=NNC2=C1N=C(N=C2)N1C2C(N(CC1CC2)C)=O HBAQYPYDRFILMT-UHFFFAOYSA-N 0.000 claims description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 3
- 239000001110 calcium chloride Substances 0.000 claims description 3
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 3
- 230000002183 duodenal effect Effects 0.000 claims description 3
- 230000002496 gastric effect Effects 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 229910002016 Aerosil® 200 Inorganic materials 0.000 claims description 2
- 125000004104 aryloxy group Chemical group 0.000 claims description 2
- 230000000873 masking effect Effects 0.000 claims description 2
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 claims description 2
- 230000003381 solubilizing effect Effects 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 125000003396 thiol group Chemical group [H]S* 0.000 claims 8
- 125000001589 carboacyl group Chemical group 0.000 claims 1
- 239000012458 free base Substances 0.000 description 32
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 18
- 239000001301 oxygen Substances 0.000 description 18
- 229960004023 minocycline Drugs 0.000 description 17
- 125000003917 carbamoyl group Chemical group [H]N([H])C(*)=O 0.000 description 16
- 239000000203 mixture Substances 0.000 description 15
- 229910052757 nitrogen Inorganic materials 0.000 description 14
- 239000000243 solution Substances 0.000 description 14
- 125000004432 carbon atom Chemical group C* 0.000 description 12
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 12
- 241000700159 Rattus Species 0.000 description 11
- 125000001424 substituent group Chemical group 0.000 description 11
- 125000004658 aryl carbonyl amino group Chemical group 0.000 description 10
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 10
- 229910052731 fluorine Inorganic materials 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 229910019142 PO4 Inorganic materials 0.000 description 9
- 125000004442 acylamino group Chemical group 0.000 description 9
- 125000003806 alkyl carbonyl amino group Chemical group 0.000 description 9
- 239000002585 base Substances 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 9
- 239000010452 phosphate Substances 0.000 description 9
- 210000001519 tissue Anatomy 0.000 description 9
- 239000002253 acid Substances 0.000 description 8
- 125000004947 alkyl aryl amino group Chemical group 0.000 description 8
- 125000002877 alkyl aryl group Chemical group 0.000 description 8
- 125000001951 carbamoylamino group Chemical group C(N)(=O)N* 0.000 description 8
- 125000000753 cycloalkyl group Chemical group 0.000 description 8
- 125000004986 diarylamino group Chemical group 0.000 description 8
- 125000005842 heteroatom Chemical group 0.000 description 8
- 150000003573 thiols Chemical group 0.000 description 8
- 125000004691 alkyl thio carbonyl group Chemical group 0.000 description 7
- 125000005200 aryloxy carbonyloxy group Chemical group 0.000 description 7
- 125000000852 azido group Chemical group *N=[N+]=[N-] 0.000 description 7
- 150000007942 carboxylates Chemical class 0.000 description 7
- 150000002430 hydrocarbons Chemical group 0.000 description 7
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 7
- 125000005420 sulfonamido group Chemical group S(=O)(=O)(N*)* 0.000 description 7
- 150000003467 sulfuric acid derivatives Chemical group 0.000 description 7
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical group [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 125000000392 cycloalkenyl group Chemical group 0.000 description 6
- 238000009472 formulation Methods 0.000 description 6
- 150000003840 hydrochlorides Chemical class 0.000 description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 6
- 125000004434 sulfur atom Chemical group 0.000 description 6
- GUBGYTABKSRVRQ-QKKXKWKRSA-N Lactose Natural products OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)C(O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O GUBGYTABKSRVRQ-QKKXKWKRSA-N 0.000 description 5
- 125000005907 alkyl ester group Chemical group 0.000 description 5
- 150000001408 amides Chemical class 0.000 description 5
- 125000004473 dialkylaminocarbonyl group Chemical group 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 210000004731 jugular vein Anatomy 0.000 description 5
- 239000000314 lubricant Substances 0.000 description 5
- 238000003305 oral gavage Methods 0.000 description 5
- FIWQZURFGYXCEO-UHFFFAOYSA-M sodium;decanoate Chemical compound [Na+].CCCCCCCCCC([O-])=O FIWQZURFGYXCEO-UHFFFAOYSA-M 0.000 description 5
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- 241001465754 Metazoa Species 0.000 description 4
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- 125000003277 amino group Chemical group 0.000 description 4
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- CYDMQBQPVICBEU-UHFFFAOYSA-N chlorotetracycline Natural products C1=CC(Cl)=C2C(O)(C)C3CC4C(N(C)C)C(O)=C(C(N)=O)C(=O)C4(O)C(O)=C3C(=O)C2=C1O CYDMQBQPVICBEU-UHFFFAOYSA-N 0.000 description 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 4
- 238000001727 in vivo Methods 0.000 description 4
- 238000001990 intravenous administration Methods 0.000 description 4
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 4
- 125000004433 nitrogen atom Chemical group N* 0.000 description 4
- 231100000252 nontoxic Toxicity 0.000 description 4
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- 125000004430 oxygen atom Chemical group O* 0.000 description 4
- 235000019366 oxytetracycline Nutrition 0.000 description 4
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 4
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 241000283690 Bos taurus Species 0.000 description 3
- 239000004099 Chlortetracycline Substances 0.000 description 3
- FMTDIUIBLCQGJB-UHFFFAOYSA-N Demethylchlortetracyclin Natural products C1C2C(O)C3=C(Cl)C=CC(O)=C3C(=O)C2=C(O)C2(O)C1C(N(C)C)C(O)=C(C(N)=O)C2=O FMTDIUIBLCQGJB-UHFFFAOYSA-N 0.000 description 3
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- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
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- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
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- IWVCMVBTMGNXQD-PXOLEDIWSA-N oxytetracycline Chemical compound C1=CC=C2[C@](O)(C)[C@H]3[C@H](O)[C@H]4[C@H](N(C)C)C(O)=C(C(N)=O)C(=O)[C@@]4(O)C(O)=C3C(=O)C2=C1O IWVCMVBTMGNXQD-PXOLEDIWSA-N 0.000 description 3
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- XATZHCXBMKRRDO-REHNUXHNSA-N pipacycline Chemical compound O=C([C@@]1(O)C(O)=C2[C@@H]([C@](C3=CC=CC(O)=C3C2=O)(C)O)C[C@H]1[C@@H](C=1O)N(C)C)C=1C(=O)NCN1CCN(CCO)CC1 XATZHCXBMKRRDO-REHNUXHNSA-N 0.000 description 1
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- PBMFSQRYOILNGV-UHFFFAOYSA-N pyridazine Chemical compound C1=CC=NN=C1 PBMFSQRYOILNGV-UHFFFAOYSA-N 0.000 description 1
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- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
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- 239000004208 shellac Substances 0.000 description 1
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 description 1
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- 150000004760 silicates Chemical class 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 description 1
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- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
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- OFVLGDICTFRJMM-WESIUVDSSA-N tetracycline Chemical compound C1=CC=C2[C@](O)(C)[C@H]3C[C@H]4[C@H](N(C)C)C(O)=C(C(N)=O)C(=O)[C@@]4(O)C(O)=C3C(=O)C2=C1O OFVLGDICTFRJMM-WESIUVDSSA-N 0.000 description 1
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- 125000005300 thiocarboxy group Chemical group C(=S)(O)* 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000011820 transgenic animal model Methods 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- 125000004784 trichloromethoxy group Chemical group ClC(O*)(Cl)Cl 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea group Chemical group NC(=O)N XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 210000003932 urinary bladder Anatomy 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 210000001835 viscera Anatomy 0.000 description 1
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Classifications
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- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/65—Tetracyclines
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/02—Inorganic compounds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/08—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing oxygen, e.g. ethers, acetals, ketones, quinones, aldehydes, peroxides
- A61K47/10—Alcohols; Phenols; Salts thereof, e.g. glycerol; Polyethylene glycols [PEG]; Poloxamers; PEG/POE alkyl ethers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/08—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing oxygen, e.g. ethers, acetals, ketones, quinones, aldehydes, peroxides
- A61K47/12—Carboxylic acids; Salts or anhydrides thereof
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
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- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/20—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing sulfur, e.g. dimethyl sulfoxide [DMSO], docusate, sodium lauryl sulfate or aminosulfonic acids
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- A—HUMAN NECESSITIES
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/26—Carbohydrates, e.g. sugar alcohols, amino sugars, nucleic acids, mono-, di- or oligo-saccharides; Derivatives thereof, e.g. polysorbates, sorbitan fatty acid esters or glycyrrhizin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0053—Mouth and digestive tract, i.e. intraoral and peroral administration
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0087—Galenical forms not covered by A61K9/02 - A61K9/7023
- A61K9/0092—Hollow drug-filled fibres, tubes of the core-shell type, coated fibres, coated rods, microtubules or nanotubes
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/04—Antibacterial agents
Definitions
- New tetracycline analogues have also been investigated which may prove to be equal to or more effective than the originally introduced tetracycline compounds. Examples include U.S. Pat. Nos. 2,980,584; 2,990,331; 3,062,717; 3,165,531; 3,454,697; 3,557,280; 3,674,859; 3,957,980; 4,018,889; 4,024,272; and 4,126,680. These patents are representative of the range of pharmaceutically active tetracycline and tetracycline analogue compositions.
- tetracyclines were found to be highly effective pharmacologically against rickettsiae; a number of gram-positive and gram-negative bacteria; and the agents responsible for lymphogranuloma venereum, inclusion conjunctivitis, and psittacosis.
- tetracyclines became known as “broad spectrum” antibiotics.
- the tetracyclines as a class rapidly became widely used for therapeutic purposes.
- the invention pertains to methods of increasing the oral bioavailability of a tetracycline compound in a subject.
- the method includes administering to a subject a tetracycline compound in combination with a bioavailability enhancing agent such that the tetracycline compound is released in the intestinal tract.
- the invention pertains to a pharmaceutical composition comprising a therapeutically effective amount of a tetracycline compound in combination with a bioavailability enhancing agent and a pharmaceutically acceptable carrier for administration of said tetracycline compound to the intestinal tract.
- the invention pertains to a kit comprising a tetracycline compound and instructions for administering a therapeutically effective amount of the tetracycline compound in combination with a bioavailability enhancing agent to the intestinal tract of a subject.
- the invention pertains to methods of increasing the oral bioavailability of a tetracycline compound in a subject.
- the method includes administering to a subject a tetracycline compound in combination with a bioavailability enhancing agent such that the tetracycline compound is released in the intestinal tract.
- the phrase “released in the intestinal tract” refers to the dispersion of the tetracycline in the intestinal tract.
- the intestinal tract as used herein includes, for example, the small intestine, the large intestine, the duodenum, the jejunum, the ileum, the colon, and the cecum.
- the term “the intestinal tract” does not include the mouth, the pharanx, the esophagus, the cardia and the stomach.
- the tetracycline compound is released into the small intestine.
- the tetracycline compound is released into the duodenum.
- Methods for releasing the tetracycline compound into the intestinal tract include, for example, the administration of the tetracycline compound in a formulation with an enteric coating, administration by directly injecting the tetracycline compound into the intestinal tract, administration of the tetracycline via a gastric feeding tube and administration of the tetracycline compound by a duodenal feeding tube.
- bioavailability includes, generally, the degree to which a drug or other substance becomes available to a target tissue after administration.
- bioavailability of the of the tetracycline compounds may be the bioavailability to a particular target tissue.
- the particular target tissue may require traversal of the stomach or the small intestines, therefore the bioavailability data may be obtained from this particular target tissue.
- target tissue includes any tissue or body fluid of a subject, preferably human.
- the target tissue may be the brain, blood, nerves, spinal cord, heart, liver, kidneys, stomach, small intestine, duodenum, muscles, lung, pancreas, intestine, bladder, reproductive organs, bones, tendons, or other internal organs or tissues.
- Bioavailibility can be determined according to the following equation:
- % F ( AUC ) po /( AUC ) i.v ⁇ (Dose) iv /(Dose) po
- % F is the fraction of the compound absorbed.
- AUC is the experimentally determined “area under the curve” and is related to other pharmacodynamic parameters such as clearance (CL), volume of distribution (V d ), and elimination half-life (t 112 ) (See Hirono, S. et al. Biol Pharm Bull 1994, 17, 306-309).
- bioavailability of the tetracycline compound may be enhanced by the addition of a bioavailability enhancing agent.
- bioavailability enhancing agent includes agents that, when administered in combination with the tetracycline compound, increase the availability of the tetracycline compound to the target tissue.
- Suitable bioavailability enhancing agents include, for example, charge masking compounds, solubilizing compounds, reducing compounds, stabilizing compounds, lubricating compounds, enteric coatings, permeability enhancing compounds, or combinations thereof.
- the bioavailability enhancing agent is, for example, polysorbate 80 (TWEEN-80), ethylenediaminetetraacetic acid (EDTA), sodium bisulfite, octanol, oil, ethanol, calcium chloride, or silicon dioxide.
- the bioavailability enhancing agent is a lubricating agent in combination with another bioavailability enhancing agent. Examples of combinations include sodium bisulfite with a lubricating compound such as AEROSIL 200.
- the bioavailability of the tetracycline compound when administered in combination with the bioavailability enhancing agent is increased by about 5% or greater, by about 10% or greater, by about 25% or greater, by about 40% or greater or by about 50% or greater as compared to the bioavailability of the compound when not specifically administered to the intestinal tract, i.e., orally administered via mouth without an enteric coating.
- the language “in combination with” a bioavailability enhancing agent includes co-administration of the tetracycline compound and the bioavailability enhancing agent, administration of the tetracycline compound first, followed by the bioavailability enhancing agent and administration of the bioavailability enhancing agent, followed by the tetracycline compound.
- the bioavailability enhancing agent and the tetracycline compound may be administered at any interval which allows the compounds to perform their intended function, e.g., increase to oral bioavailability of the tetracycline compound.
- the bioavailability enhancing agent and the tetracycline compound may be administered concurrently in separate or in the same pharmaceutical composition.
- the tetracycline compound and the bioavailability enhancing agent may be administered within about 30 minutes, within about one hour, within about two hours, or within another period of time which allows the compounds to perform their intended function.
- subject includes animals (e.g., mammals, e.g., cats, dogs, horses, pigs, cows, sheep, rodents, rabbits, squirrels, bears, primates (e.g., chimpanzees, gorillas, and humans)). It also includes transgenic animal models.
- animals e.g., mammals, e.g., cats, dogs, horses, pigs, cows, sheep, rodents, rabbits, squirrels, bears, primates (e.g., chimpanzees, gorillas, and humans)). It also includes transgenic animal models.
- tetracycline compound includes substituted or unsubstituted tetracycline compounds or compounds with a similar ring structure to tetracycline.
- tetracycline compounds include: chlortetracycline, oxytetracycline, demeclocycline, methacycline, sancycline, chelocardin, rolitetracycline, lymecycline, apicycline; clomocycline, guamecycline, meglucycline, mepylcycline, penimepicycline, pipacycline, etamocycline, penimocycline, etc.
- substituted tetracycline compound includes tetracycline compounds with one or more additional substituents, e.g., at the 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 11a, 12, 12a or 13 position or at any other position which allows the substituted tetracycline compound of the invention to perform its intended function.
- the tetracycline compound of the invention is of formula I:
- R 2′′ is C( ⁇ O)NH 2 ;
- R 3 , R 10 , R 11 and R 12 are each hydrogen or a prodrug moiety;
- R 4 is NR 4a R 4b ;
- R 4a and R 4b are each methyl;
- R 5 is hydrogen;
- R 8 is hydrogen;
- X is CR 6 R 6′ ;
- R 6 is hydrogen; and
- R 5′ and R 6′ are hydrogen.
- the tetracycline compound of the invention is of formula
- R 14 is hydrogen or prodrug moiety, and pharmaceutically acceptable salts thereof.
- R 14 is hydrogen
- R 14 is of the formula
- E 1 is a covalent bond and G 1 is alkyl.
- E 1 is nitrogen and G 1 is aryl, such as substituted or unsubstituted phenyl.
- E 1 is oxygen and G 1 is alkylcarbonyloxyalkyl.
- G 1 is of the formula —(CH 2 ) m —O—(C ⁇ O)—R 15 , wherein m is 1-5 and R 16 is alkyl.
- m is 1 or 2.
- R 15 is methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, —(CH 2 ) 10 —CH 3 , or —(CH 2 ) 11 CH 3 .
- R 15 is cycloalkyl.
- E 1 is oxygen and G 1 is —(CH 2 ) 2 —O—C( ⁇ O)—CH 3 . In another embodiment, E 1 is oxygen and G 1 is —CH 2 —O—(C ⁇ O)—C(CH 3 ) 3 .
- E 1 is oxygen and G 1 is alkyl.
- Suitable alkyl groups include, for example, methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, —(CH 2 ) 10 —CH 3 , or —(CH 2 ) 11 CH 3 .
- E 1 is oxygen and G 1 is arylcarbonyloxyalkyl.
- G 1 is of the formula: —(CH 2 ) 1 —O—(C ⁇ O)—R 17 , wherein f is 1-5 and R 17 is aryl.
- f is 1 and R 17 is substituted or unsubstituted phenyl.
- Suitable substituted phenyl groups include, for example, phenyl substituted with one or more substituents selected from the group consisting of halogen, alkoxy, or alkyl.
- E 1 is oxygen and G 1 is alkyloxycarbonyloxyalkyl.
- G 1 is of the formula —(CH 2 )—O—(C ⁇ O)—O—R 18 , wherein R 18 is alkyl.
- Suitable alkyl groups include, for example, methyl, ethyl, propyl, butyl or pentyl.
- E 1 is oxygen and G 1 is arylalkylcarbonyloxyalkyl.
- G 1 is of the formula —(CH 2 )—O—(C ⁇ O)—(CH 2 ) h —R 19 , wherein h is 1-5, and R 19 is aryl. In another embodiment, h is 1 or 2 and R 19 is phenyl.
- E 1 is oxygen and G 1 is alkyloxyalkylcarbonyloxyalkyl.
- G 1 is of the formula —(CH 2 )—O—(C ⁇ O)—(CH 2 ) i —O—R 20 , wherein i is 1-5, and R 20 is alkyl.
- i is 1, 2, or 3.
- R 20 is methyl.
- E 1 is oxygen and G 1 is alkoxyalkoxyalkylcarbonyloxyalkyl.
- G 1 is of the formula —(CH 2 )—O—(C ⁇ O)—(CH 2 ) i —O—(CH 2 ) k —O—R 21 , wherein j and k are each 1-5, and R 21 is alkyl.
- j is 1 and k is 2.
- R 21 is methyl.
- E 1 is oxygen and G 1 is heterocyclic alkyl.
- the tetracycline compound is:
- tetracycline compounds of this invention can be synthesized using the methods described in U.S. Ser. No. 10/877,454, U.S. Ser. No. 10/740,961, U.S. Pat. No. 6,846,939, U.S. Pat. No. 6,818,635, U.S. Pat. No. 6,683,068, and U.S. Ser. No. 10/337,914, the entire contents of each of which are incorporated herein by reference, and/or by other techniques known to those of ordinary skill in the art.
- alkyl includes saturated aliphatic groups, including straight-chain alkyl groups (e.g., methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, etc.), branched-chain alkyl groups (isopropyl, tert-butyl, isobutyl, etc.), cycloalkyl (alicyclic) groups (cyclopropyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl), alkyl substituted cycloalkyl groups, and cycloalkyl substituted alkyl groups.
- straight-chain alkyl groups e.g., methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl,
- alkyl further includes alkyl groups, which can further include oxygen, nitrogen, sulfur or phosphorous atoms replacing one or more carbons of the hydrocarbon backbone.
- a straight chain or branched chain alkyl has 6 or fewer carbon atoms in its backbone (e.g., C 1 -C 6 for straight chain, C 3 -C 6 for branched chain), and more preferably 4 or fewer.
- preferred cycloalkyls have from 3-8 carbon atoms in their ring structure, and more preferably have 5 or 6 carbons in the ring structure.
- C 1 -C 6 includes alkyl groups containing 1 to 6 carbon atoms.
- alkyl includes both “unsubstituted alkyls” and “substituted alkyls”, the latter of which refers to alkyl moieties having substituents replacing a hydrogen on one or more carbons of the hydrocarbon backbone.
- substituents can include, for example, alkenyl, alkynyl, halogen, hydroxyl, alkylcarbonyloxy, arylcarbonyloxy, alkoxycarbonyloxy, aryloxycarbonyloxy, carboxylate, alkylcarbonyl, arylcarbonyl, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, alkylthiocarbonyl, alkoxyl, phosphate, phosphonato, phosphinato, cyano, amino (including alkyl amino, dialkylamino, arylamino, diarylamino, and alkylarylamino), acylamino (including alkylcarbonylamino, arylcarbonylamino, carbamoyl and ureido), amidino, imino, sulfhydryl, alkylthio, arylthio, thiocarboxylate, sul
- Cycloalkyls can be further substituted, e.g., with the substituents described above.
- An “alkylaryl” or an “arylalkyl” moiety is an alkyl substituted with an aryl (e.g., phenylmethyl (benzyl)).
- the term “alkyl” also includes the side chains of natural and unnatural amino acids.
- aryl includes groups, including 5- and 6-membered single-ring aromatic groups that may include from zero to four heteroatoms, for example, benzene, phenyl, pyrrole, furan, thiophene, thiazole, isothiaozole, imidazole, triazole, tetrazole, pyrazole, oxazole, isooxazole, pyridine, pyrazine, pyridazine, and pyrimidine, and the like.
- aryl includes multicyclic aryl groups, e.g., tricyclic, bicyclic, e.g., naphthalene, benzoxazole, benzodioxazole, benzothiazole, benzoimidazole, benzothiophene, methylenedioxyphenyl, quinoline, isoquinoline, napthridine, indole, benzofuran, purine, benzofuran, deazapurine, or indolizine.
- aryl groups having heteroatoms in the ring structure may also be referred to as “aryl heterocycles”, “heterocycles,” “heteroaryls” or “heteroaromatics”.
- the aromatic ring can be substituted at one or more ring positions with such substituents as described above, as for example, halogen, hydroxyl, alkoxy, alkylcarbonyloxy, arylcarbonyloxy, alkoxycarbonyloxy, aryloxycarbonyloxy, carboxylate, alkylcarbonyl, alkylaminoacarbonyl, arylalkyl aminocarbonyl, alkenylaminocarbonyl, alkylcarbonyl, arylcarbonyl, arylalkylcarbonyl, alkenylcarbonyl, alkoxycarbonyl, aminocarbonyl, alkylthiocarbonyl, phosphate, phosphonato, phosphinato, cyano, amino (including alkyl amino, dialkylamino, arylamino, diarylamino, and alkylarylamino), acylamino (including alkylcarbonylamino, arylcarbonylamino, carbamoyl and
- alkenyl includes unsaturated aliphatic groups analogous in length and possible substitution to the alkyls described above, but that contain at least one double bond.
- alkenyl includes straight-chain alkenyl groups (e.g., ethylenyl, propenyl, butenyl, pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, etc.), branched-chain alkenyl groups, cycloalkenyl (alicyclic) groups (cyclopropenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, cyclooctenyl), alkyl or alkenyl substituted cycloalkenyl groups, and cycloalkyl or cycloalkenyl substituted alkenyl groups.
- alkenyl includes straight-chain alkenyl groups (e.g., ethylenyl, propenyl, butenyl, pentenyl, hexenyl, heptenyl, octenyl, nonen
- alkenyl further includes alkenyl groups which include oxygen, nitrogen, sulfur or phosphorous atoms replacing one or more carbons of the hydrocarbon backbone.
- a straight chain or branched chain alkenyl group has 6 or fewer carbon atoms in its backbone (e.g., C 2 -C 6 for straight chain, C 3 -C 6 for branched chain).
- cycloalkenyl groups may have from 3-8 carbon atoms in their ring structure, and more preferably have 5 or 6 carbons in the ring structure.
- C 2 -C 6 includes alkenyl groups containing 2 to 6 carbon atoms.
- alkenyl includes both “unsubstituted alkenyls” and “substituted alkenyls”, the latter of which refers to alkenyl moieties having substituents replacing a hydrogen on one or more carbons of the hydrocarbon backbone.
- substituents can include, for example, alkyl groups, alkynyl groups, halogens, hydroxyl, alkylcarbonyloxy, arylcarbonyloxy, alkoxycarbonyloxy, aryloxycarbonyloxy, carboxylate, alkylcarbonyl, arylcarbonyl, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, alkylthiocarbonyl, alkoxyl, phosphate, phosphonato, phosphinato, cyano, amino (including alkyl amino, dialkylamino, arylamino, diarylamino, and alkylarylamino), acylamino (including alkylcarbonylamino, arylcarbonylamino, carbamoyl and ureido), amidino, imino, sulfhydryl, alkylthio, arylthio, thiocarboxylate,
- alkynyl includes unsaturated aliphatic groups analogous in length and possible substitution to the alkyls described above, but which contain at least one triple bond.
- alkynyl includes straight-chain alkynyl groups (e.g., ethynyl, propynyl, butynyl, pentynyl, hexynyl, heptynyl, octynyl, nonynyl, decynyl, etc.), branched-chain alkynyl groups, and cycloalkyl or cycloalkenyl substituted alkynyl groups.
- alkynyl further includes alkynyl groups which include oxygen, nitrogen, sulfur or phosphorous atoms replacing one or more carbons of the hydrocarbon backbone.
- a straight chain or branched chain alkynyl group has 6 or fewer carbon atoms in its backbone (e.g., C 2 -C 6 for straight chain, C 3 -C 6 for branched chain).
- the term C 2 -C 6 includes alkynyl groups containing 2 to 6 carbon atoms.
- alkynyl includes both “unsubstituted alkynyls” and “substituted alkynyls”, the latter of which refers to alkynyl moieties having substituents replacing a hydrogen on one or more carbons of the hydrocarbon backbone.
- substituents can include, for example, alkyl groups, alkynyl groups, halogens, hydroxyl, alkylcarbonyloxy, arylcarbonyloxy, alkoxycarbonyloxy, aryloxycarbonyloxy, carboxylate, alkylcarbonyl, arylcarbonyl, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, alkylthiocarbonyl, alkoxyl, phosphate, phosphonato, phosphinato, cyano, amino (including alkyl amino, dialkylamino, arylamino, diarylamino, and alkylarylamino), acylamino (including alkylcarbonylamino, arylcarbonylamino, carbamoyl and ureido), amidino, imino, sulfhydryl, alkylthio, arylthio, thiocarboxylate,
- lower alkyl as used herein means an alkyl group, as defined above, but having from one to five carbon atoms in its backbone structure. “Lower alkenyl” and “lower alkynyl” have chain lengths of, for example, 2-5 carbon atoms.
- acyl includes compounds and moieties which contain the acyl radical (CH 3 CO—) or a carbonyl group. It includes substituted acyl moieties.
- substituted acyl includes acyl groups where one or more of the hydrogen atoms are replaced by for example, alkyl groups, alkynyl groups, halogens, hydroxyl, alkylcarbonyloxy, arylcarbonyloxy, alkoxycarbonyloxy, aryloxycarbonyloxy, carboxylate, alkylcarbonyl, arylcarbonyl, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, alkylthiocarbonyl, alkoxyl, phosphate, phosphonato, phosphinato, cyano, amino (including alkyl amino, dialkylamino, arylamino, diarylamino, and alkylarylamino), acylamino (including
- acylamino includes moieties wherein an acyl moiety is bonded to an amino group.
- the term includes alkylcarbonylamino, arylcarbonylamino, carbamoyl and ureido groups.
- aroyl includes compounds and moieties with an aryl or heteroaromatic moiety bound to a carbonyl group. Examples of aroyl groups include phenylcarboxy, naphthyl carboxy, etc.
- alkoxyalkyl examples include alkyl groups, as described above, which further include oxygen, nitrogen or sulfur atoms replacing one or more carbons of the hydrocarbon backbone, e.g., oxygen, nitrogen or sulfur atoms.
- alkoxy includes substituted and unsubstituted alkyl, alkenyl, and alkynyl groups covalently linked to an oxygen atom.
- alkoxy groups include methoxy, ethoxy, isopropyloxy, propoxy, butoxy, and pentoxy groups.
- substituted alkoxy groups include halogenated alkoxy groups.
- the alkoxy groups can be substituted with groups such as alkenyl, alkynyl, halogen, hydroxyl, alkylcarbonyloxy, arylcarbonyloxy, alkoxycarbonyloxy, aryloxycarbonyloxy, carboxylate, alkylcarbonyl, arylcarbonyl, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, alkylthiocarbonyl, alkoxyl, phosphate, phosphonato, phosphinato, cyano, amino (including alkyl amino, dialkylamino, arylamino, diarylamino, and alkylarylamino), acylamino (including alkylcarbonylamino, arylcarbonylamino, carbamoyl and ureido), amidino, imino, sulfhydryl, alkylthio, arylthio, thiocarboxylate
- amine or “amino” includes compounds where a nitrogen atom is covalently bonded to at least one carbon or heteroatom.
- the term includes “alkyl amino” which comprises groups and compounds wherein the nitrogen is bound to at least one additional alkyl group.
- dialkyl amino includes groups wherein the nitrogen atom is bound to at least two additional alkyl groups.
- arylamino and “diarylamino” include groups wherein the nitrogen is bound to at least one or two aryl groups, respectively.
- alkylarylamino “alkylaminoaryl” or “arylaminoalkyl” refers to an amino group which is bound to at least one alkyl group and at least one aryl group.
- alkaminoalkyl refers to an alkyl, alkenyl, or alkynyl group bound to a nitrogen atom which is also bound to an alkyl group.
- amide includes compounds or moieties which contain a nitrogen atom which is bound to the carbon of a carbonyl or a thiocarbonyl group.
- the term includes “alkaminocarbonyl” or “alkylaminocarbonyl” groups which include alkyl, alkenyl, aryl or alkynyl groups bound to an amino group bound to a carbonyl group. It includes arylaminocarbonyl and arylcarbonylamino groups which include aryl or heteroaryl moieties bound to an amino group which is bound to the carbon of a carbonyl or thiocarbonyl group.
- alkylaminocarbonyl “alkenylaminocarbonyl,” “alkynylaminocarbonyl,” “arylaminocarbonyl,” “alkylcarbonylamino,” “alkenylcarbonylamino,” “alkynylcarbonylamino,” and “arylcarbonylamino” are included in term “amide.” Amides also include urea groups (aminocarbonylamino) and carbamates (oxycarbonylamino).
- carbonyl or “carboxy” includes compounds and moieties which contain a carbon connected with a double bond to an oxygen atom.
- the carbonyl can be further substituted with any moiety which allows the compounds of the invention to perform its intended function.
- carbonyl moieties may be substituted with alkyls, alkenyls, alkynyls, aryls, alkoxy, aminos, etc.
- moieties which contain a carbonyl include aldehydes, ketones, carboxylic acids, amides, esters, anhydrides, etc.
- thiocarbonyl or “thiocarboxy” includes compounds and moieties which contain a carbon connected with a double bond to a sulfur atom.
- ether includes compounds or moieties which contain an oxygen bonded to two different carbon atoms or heteroatoms.
- alkoxyalkyl which refers to an alkyl, alkenyl, or alkynyl group covalently bonded to an oxygen atom which is covalently bonded to another alkyl group.
- esters includes compounds and moieties which contain a carbon or a heteroatom bound to an oxygen atom which is bonded to the carbon of a carbonyl group.
- ester includes alkoxycarboxy groups such as methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, butoxycarbonyl, pentoxycarbonyl, etc.
- alkyl, alkenyl, or alkynyl groups are as defined above.
- thioether includes compounds and moieties which contain a sulfur atom bonded to two different carbon or hetero atoms.
- Examples of thioethers include, but are not limited to alkthioalkyls, alkthioalkenyls, and alkthioalkynyls.
- alkthioalkyls include compounds with an alkyl, alkenyl, or alkynyl group bonded to a sulfur atom which is bonded to an alkyl group.
- alkthioalkenyls and alkthioalkynyls refer to compounds or moieties wherein an alkyl, alkenyl, or alkynyl group is bonded to a sulfur atom which is covalently bonded to an alkynyl group.
- hydroxy or “hydroxyl” includes groups with an —OH or —O ⁇ .
- halogen includes fluorine, bromine, chlorine, iodine, etc.
- perhalogenated generally refers to a moiety wherein all hydrogens are replaced by halogen atoms.
- polycyclyl or “polycyclic radical” refer to two or more cyclic rings (e.g., cycloalkyls, cycloalkenyls, cycloalkynyls, aryls and/or heterocyclyls) in which two or more carbons are common to two adjoining rings, e.g., the rings are “fused rings”. Rings that are joined through non-adjacent atoms are termed “bridged” rings.
- Each of the rings of the polycycle can be substituted with such substituents as described above, as for example, halogen, hydroxyl, alkylcarbonyloxy, arylcarbonyloxy, alkoxycarbonyloxy, aryloxycarbonyloxy, carboxylate, alkylcarbonyl, alkoxycarbonyl, alkylaminoacarbonyl, arylalkylaminocarbonyl, alkenylaminocarbonyl, alkylcarbonyl, arylcarbonyl, arylalkyl carbonyl, alkenylcarbonyl, aminocarbonyl, alkylthiocarbonyl, alkoxyl, phosphate, phosphonato, phosphinato, cyano, amido, amino (including alkyl amino, dialkylamino, arylamino, diarylamino, and alkylarylamino), acylamino (including alkylcarbonylamino, arylcarbonylamino, carbamoy
- heteroatom includes atoms of any element other than carbon or hydrogen. Preferred heteroatoms are nitrogen, oxygen, sulfur and phosphorus.
- prodrug moiety includes moieties which can be metabolized in vivo to a hydroxyl group and moieties which may advantageously remain esterified in vivo.
- the prodrugs moieties are metabolized in vivo by esterases or by other mechanisms to hydroxyl groups or other advantageous groups.
- Examples of prodrugs and their uses are well known in the art (See, e.g., Berge et al. (1977) “Pharmaceutical Salts”, J. Pharm. Sci. 66:1-19).
- the prodrugs can be prepared in situ during the final isolation and purification of the compounds, or by separately reacting the purified compound in its free acid form or hydroxyl with a suitable esterifying agent.
- Hydroxyl groups can be converted into esters via treatment with a carboxylic acid.
- prodrug moieties include substituted and unsubstituted, branch or unbranched lower alkyl ester moieties, (e.g., propionoic acid esters), lower alkenyl esters, di-lower alkyl-amino lower-alkyl esters (e.g., dimethylaminoethyl ester), acylamino lower alkyl esters (e.g., acetyloxymethyl ester), acyloxy lower alkyl esters (e.g., pivaloyloxymethyl ester), aryl esters (phenyl ester), aryl-lower alkyl esters (e.g., benzyl ester), substituted (e.g., with methyl, halo, or methoxy substituents) aryl and aryl-lower alkyl esters, amides, lower-alkyl amides,
- the structure of some of the tetracycline compounds of this invention includes asymmetric carbon atoms. It is to be understood accordingly that the isomers arising from such asymmetry (e.g., all enantiomers and diastereomers) are included within the scope of this invention, unless indicated otherwise. Such isomers can be obtained in substantially pure form by classical separation techniques and by stereochemically controlled synthesis. Furthermore, the structures and other compounds and moieties discussed in this application also include all tautomers thereof.
- the invention pertains to a kit comprising a tetracycline compound and instructions for administering a therapeutically effective amount of the tetracycline compound in combination with a bioavailability enhancing agent to the intestinal tract of a subject.
- the invention pertains to pharmaceutical composition
- the bioavailability enhancing agent and the tetracycline compound may be administered concurrently in separate or in the same pharmaceutical composition.
- the language “effective amount” of the tetracycline compound is that amount necessary or sufficient to treat a subject.
- the effective amount can vary depending on such factors as the size and weight of the subject, the type of illness, or the particular tetracycline compound. For example, the choice of the tetracycline compound can affect what constitutes an “effective amount”.
- One of ordinary skill in the art would be able to study the aforementioned factors and make the determination regarding the effective amount of the tetracycline compound without undue experimentation.
- pharmaceutically acceptable carrier includes substances capable of being coadministered with the tetracycline compound(s), and which allow both to perform their intended function.
- suitable pharmaceutically acceptable carriers include but are not limited to water, salt solutions, alcohol, vegetable oils, polyethylene glycols, gelatin, lactose, amylose, magnesium stearate, talc, silicic acid, viscous paraffin, perfume oil, fatty acid monoglycerides and diglycerides, petroethral fatty acid esters, hydroxymethyl-cellulose, polyvinylpyrrolidone, etc.
- the pharmaceutical preparations can be sterilized and if desired mixed with auxiliary agents, e.g., lubricants, preservatives, stabilizers, wetting agents, emulsifiers, salts for influencing osmotic pressure, buffers, colorings, flavorings and/or aromatic substances and the like which do not deleteriously react with the active compounds of the invention.
- auxiliary agents e.g., lubricants, preservatives, stabilizers, wetting agents, emulsifiers, salts for influencing osmotic pressure, buffers, colorings, flavorings and/or aromatic substances and the like which do not deleteriously react with the active compounds of the invention.
- the tetracycline compounds of the invention that are basic in nature are capable of forming a wide variety of salts with various inorganic and organic acids.
- the acids that may be used to prepare pharmaceutically acceptable acid addition salts of the tetracycline compounds of the invention that are basic in nature are those that form non-toxic acid addition salts, i.e., salts containing pharmaceutically acceptable anions, such as the hydrochloride, hydrobromide, hydroiodide, nitrate, sulfate, bisulfate, phosphate, acid phosphate, isonicotinate, acetate, lactate, salicylate, citrate, acid citrate, tartrate, pantothenate, bitartrate, ascorbate, succinate, maleate, gentisinate, fumarate, gluconate, glucaronate, saccharate, formate, benzoate, glutamate, methanesulfonate, ethanesulfonate, benzenesulfonate
- salts must be pharmaceutically acceptable for administration to a subject, e.g., a mammal
- the acid addition salts of the base compounds of this invention are readily prepared by treating the base compound with a substantially equivalent amount of the chosen mineral or organic acid in an aqueous solvent medium or in a suitable organic solvent, such as methanol or ethanol. Upon careful evaporation of the solvent, the desired solid salt is readily obtained.
- the preparation of other tetracycline compounds of the invention not specifically described in the foregoing experimental section can be accomplished using combinations of the reactions described above that will be apparent to those skilled in the art.
- the tetracycline compounds of the invention that are acidic in nature are capable of forming a wide variety of base salts.
- the chemical bases that may be used as reagents to prepare pharmaceutically acceptable base salts of those tetracycline compounds of the invention that are acidic in nature are those that form non-toxic base salts with such compounds.
- Such non-toxic base salts include, but are not limited to those derived from such pharmaceutically acceptable cations such as alkali metal cations (e.g., potassium and sodium) and alkaline earth metal cations (e.g., calcium and magnesium), ammonium or water-soluble amine addition salts such as N-methylglucamine-(meglumine), and the lower alkanolammonium and other base salts of pharmaceutically acceptable organic amines.
- the pharmaceutically acceptable base addition salts of tetracycline compounds of the invention that are acidic in nature may be formed with pharmaceutically acceptable cations by conventional methods.
- these salts may be readily prepared by treating the tetracycline compound of the invention with an aqueous solution of the desired pharmaceutically acceptable cation and evaporating the resulting solution to dryness, preferably under reduced pressure.
- a lower alkyl alcohol solution of the tetracycline compound of the invention may be mixed with an alkoxide of the desired metal and the solution subsequently evaporated to dryness.
- tetracycline compounds of the invention and pharmaceutically acceptable salts thereof can be administered orally.
- these compounds are most desirably administered in effective dosages, depending upon the weight and condition of the subject being treated and the particular route of administration chosen. Variations may occur depending upon the species of the subject being treated and its individual response to said medicament, as well as on the type of pharmaceutical formulation chosen and the time period and interval at which such administration is carried out.
- the tetracycline compounds of the invention may be administered alone or in combination with pharmaceutically acceptable carriers or diluents by any of the routes previously mentioned, and the administration may be carried out in single or multiple doses.
- the novel therapeutic agents of this invention can be administered advantageously in a wide variety of different dosage forms, i.e., they may be combined with various pharmaceutically acceptable inert carriers in the form of tablets, capsules, aqueous suspensions, injectable solutions and the like.
- Such carriers include solid diluents or fillers, sterile aqueous media and various non-toxic organic solvents, etc.
- oral pharmaceutical compositions can be suitably sweetened and/or flavored.
- the therapeutically-effective compounds of this invention are present in such dosage forms at concentration levels ranging from about 5.0% to about 70% by weight.
- tablets containing various excipients such as microcrystalline cellulose, sodium citrate, calcium carbonate, dicalcium phosphate and glycine may be employed along with various disintegrants such as starch (and preferably corn, potato or tapioca starch), alginic acid and certain complex silicates, together with granulation binders like polyvinylpyrrolidone, sucrose, gelatin and acacia.
- disintegrants such as starch (and preferably corn, potato or tapioca starch), alginic acid and certain complex silicates, together with granulation binders like polyvinylpyrrolidone, sucrose, gelatin and acacia.
- lubricating agents such as magnesium stearate, sodium lauryl sulfate and talc are often very useful for tabletting purposes.
- compositions of a similar type may also be employed as fillers in gelatin capsules; preferred materials in this connection also include lactose or milk sugar as well as high molecular weight polyethylene glycols.
- the compositions of the invention may be formulated such that the tetracycline compositions are released over a period of time after administration.
- compositions can be formulated including those wherein the active component is protected with differentially degradable coatings, e.g., by microencapsulation, multiple coatings, etc.
- Enteric coatings may delay release of the tetracycline compound until delivery to the intestinal tract.
- enteric coatings include, but are not limited to, coatings made from methacrylic acid copolymers, cellulose acetate (and its succinate and phthalate versions), styrol maleic acid copolymers, polymethacrylic acid/acrylic acid copolymer, hydroxypropyl methyl cellulose phthalate, polyvinyl acetate phthalate, hydroxyethyl ethyl cellulose phthalate, hydroxypropyl methyl cellulose acetate succinate, cellulose acetate tetrahydrophtalate, acrylic resin, timellitate, and shellac, and combinations thereof.
- the therapeutic methods of the invention also will have significant veterinary applications, e.g. for treatment of livestock such as cattle, sheep, goats, cows, swine and the like; poultry such as chickens, ducks, geese, turkeys and the like; horses; and pets such as dogs and cats.
- livestock such as cattle, sheep, goats, cows, swine and the like
- poultry such as chickens, ducks, geese, turkeys and the like
- horses and pets such as dogs and cats.
- compounds of the invention for treatment can be administered to a subject in dosages used in prior tetracycline therapies. See, for example, the Physicians' Desk Reference .
- a suitable effective dose of one or more compounds of the invention will be in the range of from 0.01 to 100 milligrams per kilogram of body weight of recipient per day, preferably in the range of from 0.1 to 50 milligrams per kilogram body weight of recipient per day, more preferably in the range of 1 to 20 milligrams per kilogram body weight of recipient per day.
- the desired dose is suitably administered once daily, or several sub-doses, e.g. 2 to 5 sub-doses, are administered at appropriate intervals through the day, or other appropriate schedule.
- Solutions of 9-[(2,2, dimethyl-propyl amino)-methyl]-minocycline freebase (5 mg/kg [2 ml/kg]) were administered by oral gavage.
- the solutions were composed of 9-[(2,2, dimethyl-propyl amino)-methyl]-minocycline alone or in combination with bioavailability enhancing agents to assess their effect on oral bioavailability.
- % F Oral AUC/IV AUC.
- rats bearing duodenal cannulas were administered 9-[(2,2, dimethyl-propyl amino)-methyl]-minocycline freebase alone or in combination with bioavailability enhancing agents to assess their effects on bioavailability.
- a solution of 9-[(2,2, dimethyl-propyl amino)-methyl]-minocycline freebase (“freebase”) was prepared using sterile water and the final pH was adjusted to ⁇ 5.
- sodium caprate sodium decanoate, a compound that increases paracellular permeability
- the freebase was first dissolved in sterile water and sodium caprate was then added to a final concentration of 13 mM.
- the resulting solution was administered to rats via oral gavage without pH adjustment.
- the solution of freebase containing 1.5% chitosan was then prepared by first dissolving the freebase in sterile water and then adjusting the pH of this solution (pH ⁇ 8.1) to a final pH ⁇ 5 using 1N HCl. Chitosan was then added to a final concentration of 1.5% and the resulting solution was administered to rats via oral gavage as a slurry.
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Abstract
Methods for increasing the oral bioavailability of tetracycline compounds are described.
Description
- This application claims priority to U.S. Provisional Patent Application Ser. No. 60/761,819, filed on Jan. 24, 2006; the entire contents of which are hereby incorporated herein by reference.
- The development of the tetracycline antibiotics was the direct result of a systematic screening of soil specimens collected from many parts of the world for evidence of microorganisms capable of producing bacteriocidal and/or bacteriostatic compositions. The first of these novel compounds was introduced in 1948 under the name chlortetracycline. Two years later, oxytetracycline became available. The elucidation of the chemical structure of these compounds confirmed their similarity and furnished the analytical basis for the production of a third member of this group in 1952, tetracycline. A new family of tetracycline compounds, without the ring-attached methyl group present in earlier tetracyclines, was prepared in 1957 and became publicly available in 1967; and minocycline was in use by 1972.
- Recently, research efforts have focused on developing new tetracycline antibiotic compositions effective under varying therapeutic conditions and routes of administration. New tetracycline analogues have also been investigated which may prove to be equal to or more effective than the originally introduced tetracycline compounds. Examples include U.S. Pat. Nos. 2,980,584; 2,990,331; 3,062,717; 3,165,531; 3,454,697; 3,557,280; 3,674,859; 3,957,980; 4,018,889; 4,024,272; and 4,126,680. These patents are representative of the range of pharmaceutically active tetracycline and tetracycline analogue compositions.
- Historically, soon after their initial development and introduction, the tetracyclines were found to be highly effective pharmacologically against rickettsiae; a number of gram-positive and gram-negative bacteria; and the agents responsible for lymphogranuloma venereum, inclusion conjunctivitis, and psittacosis. Hence, tetracyclines became known as “broad spectrum” antibiotics. With the subsequent establishment of their in vitro antimicrobial activity, effectiveness in experimental infections, and pharmacological properties, the tetracyclines as a class rapidly became widely used for therapeutic purposes. However, this widespread use of tetracyclines for both major and minor illnesses and diseases led directly to the emergence of resistance to these antibiotics even among highly susceptible bacterial species both commensal and pathogenic (e.g., pneumococci and Salmonella). The rise of tetracycline-resistant organisms has resulted in a general decline in use of tetracyclines and tetracycline analogue compositions as antibiotics of choice. Methods and compositions for the oral bioavailability of tetracycline compounds would be of great benefit.
- In one embodiment, the invention pertains to methods of increasing the oral bioavailability of a tetracycline compound in a subject. The method includes administering to a subject a tetracycline compound in combination with a bioavailability enhancing agent such that the tetracycline compound is released in the intestinal tract. In another embodiment, the invention pertains to a pharmaceutical composition comprising a therapeutically effective amount of a tetracycline compound in combination with a bioavailability enhancing agent and a pharmaceutically acceptable carrier for administration of said tetracycline compound to the intestinal tract.
- In a further embodiment, the invention pertains to a kit comprising a tetracycline compound and instructions for administering a therapeutically effective amount of the tetracycline compound in combination with a bioavailability enhancing agent to the intestinal tract of a subject.
- In one embodiment, the invention pertains to methods of increasing the oral bioavailability of a tetracycline compound in a subject. The method includes administering to a subject a tetracycline compound in combination with a bioavailability enhancing agent such that the tetracycline compound is released in the intestinal tract.
- The phrase “released in the intestinal tract” refers to the dispersion of the tetracycline in the intestinal tract. The intestinal tract as used herein, includes, for example, the small intestine, the large intestine, the duodenum, the jejunum, the ileum, the colon, and the cecum. Furthermore, the term “the intestinal tract” does not include the mouth, the pharanx, the esophagus, the cardia and the stomach. In one embodiment, the tetracycline compound is released into the small intestine. In another embodiment, the tetracycline compound is released into the duodenum. Methods for releasing the tetracycline compound into the intestinal tract include, for example, the administration of the tetracycline compound in a formulation with an enteric coating, administration by directly injecting the tetracycline compound into the intestinal tract, administration of the tetracycline via a gastric feeding tube and administration of the tetracycline compound by a duodenal feeding tube.
- The term “bioavailability” includes, generally, the degree to which a drug or other substance becomes available to a target tissue after administration. In a further embodiment, the bioavailability of the of the tetracycline compounds may be the bioavailability to a particular target tissue. For example, in an embodiment, the particular target tissue may require traversal of the stomach or the small intestines, therefore the bioavailability data may be obtained from this particular target tissue.
- The term “target tissue” includes any tissue or body fluid of a subject, preferably human. For example, the target tissue may be the brain, blood, nerves, spinal cord, heart, liver, kidneys, stomach, small intestine, duodenum, muscles, lung, pancreas, intestine, bladder, reproductive organs, bones, tendons, or other internal organs or tissues.
- Bioavailibility can be determined according to the following equation:
-
% F=(AUC)po/(AUC)i.v×(Dose)iv/(Dose)po - In this equation, % F is the fraction of the compound absorbed. AUC is the experimentally determined “area under the curve” and is related to other pharmacodynamic parameters such as clearance (CL), volume of distribution (Vd), and elimination half-life (t112) (See Hirono, S. et al. Biol Pharm Bull 1994, 17, 306-309).
- The bioavailability of the tetracycline compound may be enhanced by the addition of a bioavailability enhancing agent. The term “bioavailability enhancing agent” includes agents that, when administered in combination with the tetracycline compound, increase the availability of the tetracycline compound to the target tissue.
- Suitable bioavailability enhancing agents include, for example, charge masking compounds, solubilizing compounds, reducing compounds, stabilizing compounds, lubricating compounds, enteric coatings, permeability enhancing compounds, or combinations thereof. In one embodiment, the bioavailability enhancing agent is, for example, polysorbate 80 (TWEEN-80), ethylenediaminetetraacetic acid (EDTA), sodium bisulfite, octanol, oil, ethanol, calcium chloride, or silicon dioxide. In a further embodiment, the bioavailability enhancing agent is a lubricating agent in combination with another bioavailability enhancing agent. Examples of combinations include sodium bisulfite with a lubricating compound such as AEROSIL 200.
- In one embodiment, the bioavailability of the tetracycline compound when administered in combination with the bioavailability enhancing agent is increased by about 5% or greater, by about 10% or greater, by about 25% or greater, by about 40% or greater or by about 50% or greater as compared to the bioavailability of the compound when not specifically administered to the intestinal tract, i.e., orally administered via mouth without an enteric coating.
- The language “in combination with” a bioavailability enhancing agent includes co-administration of the tetracycline compound and the bioavailability enhancing agent, administration of the tetracycline compound first, followed by the bioavailability enhancing agent and administration of the bioavailability enhancing agent, followed by the tetracycline compound. The bioavailability enhancing agent and the tetracycline compound may be administered at any interval which allows the compounds to perform their intended function, e.g., increase to oral bioavailability of the tetracycline compound. The bioavailability enhancing agent and the tetracycline compound may be administered concurrently in separate or in the same pharmaceutical composition. In other embodiment, the tetracycline compound and the bioavailability enhancing agent may be administered within about 30 minutes, within about one hour, within about two hours, or within another period of time which allows the compounds to perform their intended function.
- The term “subject” includes animals (e.g., mammals, e.g., cats, dogs, horses, pigs, cows, sheep, rodents, rabbits, squirrels, bears, primates (e.g., chimpanzees, gorillas, and humans)). It also includes transgenic animal models.
- The term “tetracycline compound” includes substituted or unsubstituted tetracycline compounds or compounds with a similar ring structure to tetracycline. Examples of tetracycline compounds include: chlortetracycline, oxytetracycline, demeclocycline, methacycline, sancycline, chelocardin, rolitetracycline, lymecycline, apicycline; clomocycline, guamecycline, meglucycline, mepylcycline, penimepicycline, pipacycline, etamocycline, penimocycline, etc. Other derivatives and analogues comprising a similar four ring structure are also included (See Rogalski, “Chemical Modifications of Tetracyclines,” the entire contents of which are hereby incorporated herein by reference). Table 1 depicts tetracycline and several known other tetracycline derivatives.
- Other tetracycline compounds which may be modified using the methods of the invention include, but are not limited to, 6-demethyl-6-deoxy-4-dedimethylaminotetracycline; tetracyclino-pyrazole; 7-chloro-4-dedimethylaminotetracycline; 4-hydroxy-4-dedimethylaminotetracycline; 12α-deoxy-4-dedimethylaminotetracycline; 5-hydroxy-6α-deoxy-4-dedimethylaminotetracycline; 4-dedimethylamino-12a-deoxyanhydrotetracycline; 7-dimethylamino-6-demethyl-6-deoxy-4-dedimethylaminotetracycline; tetracyclinonitrile; 4-oxo-4-dedimethylaminotetracycline 4,6-hemiketal; 4-oxo-11a C1-4-dedimethylaminotetracycline-4,6-hemiketal; 5a,6-anhydro-4-hydrazon-4-dedimethylamino tetracycline; 4-hydroxyimino-4-dedimethylamino tetracyclines; 4-hydroxyimino-4-dedimethylamino 5a,6-anhydrotetracyclines; 4-amino-4-dedimethylamino-5a, 6 anhydrotetracycline; 4-methylamino-4-dedimethylamino tetracycline; 4-hydrazono-11a-chloro-6-deoxy-6-demethyl-6-methylene-4-dedimethylamino tetracycline; tetracycline quaternary ammonium compounds; anhydrotetracycline betaines; 4-hydroxy-6-methyl pretetramides; 4-keto tetracyclines; 5-keto tetracyclines; 5a, 11a dehydro tetracyclines; 11a C1-6,12 hemiketal tetracyclines; 11a C1-6-methylene tetracyclines; 6, 13 diol tetracyclines; 6-benzylthiomethylene tetracyclines; 7,11a-dichloro-6-fluoro-methyl-6-deoxy tetracyclines; 6-fluoro (α)-6-demethyl-6-deoxy tetracyclines; 6-fluoro (β)-6-demethyl-6-deoxy tetracyclines; 6-α acetoxy-6-demethyl tetracyclines; 6-β acetoxy-6-demethyl tetracyclines; 7,13-epithiotetracyclines; oxytetracyclines; pyrazolotetracyclines; 11a halogens of tetracyclines; 12a formyl and other esters of tetracyclines; 5, 12a esters of tetracyclines; 10,12a-diesters of tetracyclines; isotetracycline; 12-a-deoxyanhydro tetracyclines; 6-demethyl-12a-deoxy-7-chloroanhydrotetracyclines; B-nortetracyclines; 7-methoxy-6-demethyl-6-deoxytetracyclines; 6-demethyl-6-deoxy-5a-epitetracyclines; 8-hydroxy-6-demethyl-6-deoxy tetracyclines; monardene; chromocycline; 5a methyl-6-demethyl-6-deoxy tetracyclines; 6-oxa tetracyclines, and 6 thia tetracyclines.
- The term “substituted tetracycline compound” includes tetracycline compounds with one or more additional substituents, e.g., at the 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 11a, 12, 12a or 13 position or at any other position which allows the substituted tetracycline compound of the invention to perform its intended function.
- In a one embodiment, the tetracycline compound of the invention is of formula I:
- wherein
-
- R1 is hydrogen, alkyl, alkenyl, alkynyl, aryl, arylalkyl, amido, alkylamino, amino, arylamino, alkylcarbonyl, arylcarbonyl, alkylaminocarbonyl, alkoxy, alkoxycarbonyl, alkylcarbonyloxy, alkyloxycarbonyloxy, arylcarbonyloxy, aryloxy, thiol, alkylthio, arylthio, alkenyl, heterocyclic, hydroxy, or halogen, optionally linked to R2 to form a ring;
- R2″ is cyano or C(═O)—NR2R2′;
- R2 is hydrogen, alkyl, halogen, alkenyl, alkynyl, aryl, hydroxyl, thiol, cyano, nitro, acyl, formyl, alkoxy, amino, alkylamino, heterocyclic, or absent, optionally linked to R1 to form a ring;
- R2′, R4a, and R4b are each independently hydrogen, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, arylalkyl, aryl, heterocyclic, heteroaromatic or a prodrug moiety;
- R10, R11, and R12 are each independently hydrogen, alkyl, aryl, benzyl, arylalkyl, or a pro-drug moiety;
- R12″ is O—R12, hydrogen, or substituted amino;
- R4 and R4′ are each independently NR4aR4b, alkyl, acyl, alkenyl, alkynyl, hydroxyl, halogen, hydrogen, or taken together ═N—OR4a;
- R5 and R5′ are each independently hydroxyl, hydrogen, thiol, alkanoyl, aroyl, alkaroyl, aryl, heteroaromatic, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, arylalkyl, alkyl carbonyloxy, or aryl carbonyloxy;
- R6 and R6′ are each independently hydrogen, methylene, absent, hydroxyl, halogen, thiol, alkyl, alkenyl, alkynyl, aryl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, or an arylalkyl;
- R7 is hydrogen, dialkylamino, hydroxyl, halogen, thiol, nitro, alkyl, alkenyl, alkynyl, aryl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, arylalkyl, amino, arylalkenyl, arylalkynyl, acyl, aminoalkyl, heterocyclic, boronic ester, alkylcarbonyl, thionitroso, or —(CH2)0-3(NR7c)0-1C(═W′)WR7a;
- R8 is hydrogen, hydroxyl, halogen, thiol, nitro, alkyl, alkenyl, alkynyl, aryl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, amino, arylalkenyl, arylalkynyl, acyl, aminoalkyl, heterocyclic, thionitroso, or —(CH2)0-3 (NR8c)0-1C(=E′)ER8a;
- R9 is hydrogen, hydroxyl, halogen, thiol, nitro, alkyl, alkenyl, alkynyl, aryl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, arylalkyl, amino, arylalkenyl, arylalkynyl, acyl, aminoalkyl, heterocyclic, thionitroso, or —(CH2)0-3(NR9c)0-1C(═Z′)ZR9a;
- R7a, R7b, R7c, R7d, R7e, R7f, R8a, R8b, R8c, R8d, R8e, R8f, R9a, R9b, R9c, R9d, R9e, and R9f are each independently hydrogen, acyl, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, arylalkyl, aryl, heterocyclic, heteroaromatic or a prodrug moiety;
- R13 is hydrogen, hydroxy, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, aryl, alkylsulfinyl, alkylsulfonyl, alkylamino, or an arylalkyl;
- E is CR8dR8e, S, NR8b or O;
- E′ is O, NR8f, or S;
- Q is a double bond when R2 is absent, Q is a single bond when R2 is hydrogen, alkyl, halogen, hydroxyl, thiol, alkenyl, alkynyl, aryl, acyl, formyl, alkoxy, amino, alkylamino, cyano, nitro, or heterocyclic;
- W is CR7dR7e, S, NR7b or O;
- W′ is O, NR7f, or S;
- X is CHC(R13Y′Y), C═CR13Y, CR6′R6, S, NR6, or O;
- Y′ and Y are each independently hydrogen, halogen, hydroxyl, cyano, sulfhydryl, amino, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, or an arylalkyl;
- Z is CR9dR9e, S, NR9b or O;
- Z′ is O, S, or NR9f, and pharmaceutically acceptable salts, esters and enantiomers thereof.
- In another embodiment, R2″ is C(═O)NH2; R3, R10, R11 and R12 are each hydrogen or a prodrug moiety; R4 is NR4aR4b; R4a and R4b are each methyl; R5 is hydrogen; R8 is hydrogen; X is CR6R6′; R6 is hydrogen; and R5′ and R6′ are hydrogen.
- In a further embodiment, the tetracycline compound of the invention is of formula
- wherein
- R14 is hydrogen or prodrug moiety, and pharmaceutically acceptable salts thereof.
- In one embodiment, R14 is hydrogen.
- In a further embodiment, R14 is of the formula
-
—(C═O)-E1-G1 - wherein
-
- E1 is oxygen, nitrogen, or a covalent bond;
- G1 is alkyl; heterocyclicalkyl; aryl; alkylcarbonyloxyalkyl; arylcarbonyloxyalkyl; alkyloxycarbonyloxyalkyl; arylalkylcarbonyloxyalkyl; alkyloxyalkylcarbonyloxyalkyl; or alkoxyalkoxycarbonyloxyalkyl.
- In one embodiment, E1 is a covalent bond and G1 is alkyl.
- In another embodiment, E1 is nitrogen and G1 is aryl, such as substituted or unsubstituted phenyl.
- In one embodiment, E1 is oxygen and G1 is alkylcarbonyloxyalkyl. In yet another embodiment, G1 is of the formula —(CH2)m—O—(C═O)—R15, wherein m is 1-5 and R16 is alkyl. In a further embodiment, m is 1 or 2. In yet another embodiment, R15 is methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, —(CH2)10—CH3, or —(CH2)11CH3. In a further embodiment, R15 is cycloalkyl.
- In one embodiment, E1 is oxygen and G1 is —(CH2)2—O—C(═O)—CH3. In another embodiment, E1 is oxygen and G1 is —CH2—O—(C═O)—C(CH3)3.
- In one embodiment, E1 is oxygen and G1 is alkyl. Suitable alkyl groups include, for example, methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, —(CH2)10—CH3, or —(CH2)11CH3.
- In one embodiment, E1 is oxygen and G1 is arylcarbonyloxyalkyl. In one particular embodiment, G1 is of the formula: —(CH2)1—O—(C═O)—R17, wherein f is 1-5 and R17 is aryl. In a further embodiment, f is 1 and R17 is substituted or unsubstituted phenyl. Suitable substituted phenyl groups include, for example, phenyl substituted with one or more substituents selected from the group consisting of halogen, alkoxy, or alkyl.
- In yet another embodiment, E1 is oxygen and G1 is alkyloxycarbonyloxyalkyl. In one particular embodiment, G1 is of the formula —(CH2)—O—(C═O)—O—R18, wherein R18 is alkyl. Suitable alkyl groups, include, for example, methyl, ethyl, propyl, butyl or pentyl.
- In a further embodiment, E1 is oxygen and G1 is arylalkylcarbonyloxyalkyl. In one particular embodiment, G1 is of the formula —(CH2)—O—(C═O)—(CH2)h—R19, wherein h is 1-5, and R19 is aryl. In another embodiment, h is 1 or 2 and R19 is phenyl.
- In a further embodiment, E1 is oxygen and G1 is alkyloxyalkylcarbonyloxyalkyl. In one particular embodiment, G1 is of the formula —(CH2)—O—(C═O)—(CH2)i—O—R20, wherein i is 1-5, and R20 is alkyl. In a further embodiment, i is 1, 2, or 3. In yet another embodiment, R20 is methyl.
- In one embodiment, E1 is oxygen and G1 is alkoxyalkoxyalkylcarbonyloxyalkyl. In one particular embodiment, G1 is of the formula —(CH2)—O—(C═O)—(CH2)i—O—(CH2)k—O—R21, wherein j and k are each 1-5, and R21 is alkyl. In one embodiment, j is 1 and k is 2. In a further embodiment, R21 is methyl.
- In yet another embodiment, E1 is oxygen and G1 is heterocyclic alkyl.
- In a further embodiment, the tetracycline compound is:
- and pharmaceutically acceptable salts thereof.
- The tetracycline compounds of this invention can be synthesized using the methods described in U.S. Ser. No. 10/877,454, U.S. Ser. No. 10/740,961, U.S. Pat. No. 6,846,939, U.S. Pat. No. 6,818,635, U.S. Pat. No. 6,683,068, and U.S. Ser. No. 10/337,914, the entire contents of each of which are incorporated herein by reference, and/or by other techniques known to those of ordinary skill in the art.
- The term “alkyl” includes saturated aliphatic groups, including straight-chain alkyl groups (e.g., methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, etc.), branched-chain alkyl groups (isopropyl, tert-butyl, isobutyl, etc.), cycloalkyl (alicyclic) groups (cyclopropyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl), alkyl substituted cycloalkyl groups, and cycloalkyl substituted alkyl groups. The term alkyl further includes alkyl groups, which can further include oxygen, nitrogen, sulfur or phosphorous atoms replacing one or more carbons of the hydrocarbon backbone. In certain embodiments, a straight chain or branched chain alkyl has 6 or fewer carbon atoms in its backbone (e.g., C1-C6 for straight chain, C3-C6 for branched chain), and more preferably 4 or fewer. Likewise, preferred cycloalkyls have from 3-8 carbon atoms in their ring structure, and more preferably have 5 or 6 carbons in the ring structure. The term C1-C6 includes alkyl groups containing 1 to 6 carbon atoms.
- Moreover, the term alkyl includes both “unsubstituted alkyls” and “substituted alkyls”, the latter of which refers to alkyl moieties having substituents replacing a hydrogen on one or more carbons of the hydrocarbon backbone. Such substituents can include, for example, alkenyl, alkynyl, halogen, hydroxyl, alkylcarbonyloxy, arylcarbonyloxy, alkoxycarbonyloxy, aryloxycarbonyloxy, carboxylate, alkylcarbonyl, arylcarbonyl, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, alkylthiocarbonyl, alkoxyl, phosphate, phosphonato, phosphinato, cyano, amino (including alkyl amino, dialkylamino, arylamino, diarylamino, and alkylarylamino), acylamino (including alkylcarbonylamino, arylcarbonylamino, carbamoyl and ureido), amidino, imino, sulfhydryl, alkylthio, arylthio, thiocarboxylate, sulfates, alkylsulfinyl, sulfonato, sulfamoyl, sulfonamido, nitro, trifluoromethyl, cyano, azido, heterocyclyl, alkylaryl, or an aromatic or heteroaromatic moiety. Cycloalkyls can be further substituted, e.g., with the substituents described above. An “alkylaryl” or an “arylalkyl” moiety is an alkyl substituted with an aryl (e.g., phenylmethyl (benzyl)). The term “alkyl” also includes the side chains of natural and unnatural amino acids.
- The term “aryl” includes groups, including 5- and 6-membered single-ring aromatic groups that may include from zero to four heteroatoms, for example, benzene, phenyl, pyrrole, furan, thiophene, thiazole, isothiaozole, imidazole, triazole, tetrazole, pyrazole, oxazole, isooxazole, pyridine, pyrazine, pyridazine, and pyrimidine, and the like. Furthermore, the term “aryl” includes multicyclic aryl groups, e.g., tricyclic, bicyclic, e.g., naphthalene, benzoxazole, benzodioxazole, benzothiazole, benzoimidazole, benzothiophene, methylenedioxyphenyl, quinoline, isoquinoline, napthridine, indole, benzofuran, purine, benzofuran, deazapurine, or indolizine. Those aryl groups having heteroatoms in the ring structure may also be referred to as “aryl heterocycles”, “heterocycles,” “heteroaryls” or “heteroaromatics”. The aromatic ring can be substituted at one or more ring positions with such substituents as described above, as for example, halogen, hydroxyl, alkoxy, alkylcarbonyloxy, arylcarbonyloxy, alkoxycarbonyloxy, aryloxycarbonyloxy, carboxylate, alkylcarbonyl, alkylaminoacarbonyl, arylalkyl aminocarbonyl, alkenylaminocarbonyl, alkylcarbonyl, arylcarbonyl, arylalkylcarbonyl, alkenylcarbonyl, alkoxycarbonyl, aminocarbonyl, alkylthiocarbonyl, phosphate, phosphonato, phosphinato, cyano, amino (including alkyl amino, dialkylamino, arylamino, diarylamino, and alkylarylamino), acylamino (including alkylcarbonylamino, arylcarbonylamino, carbamoyl and ureido), amidino, imino, sulfhydryl, alkylthio, arylthio, thiocarboxylate, sulfates, alkylsulfinyl, sulfonato, sulfamoyl, sulfonamido, nitro, trifluoromethyl, cyano, azido, heterocyclyl, alkylaryl, or an aromatic or heteroaromatic moiety. Aryl groups can also be fused or bridged with alicyclic or heterocyclic rings which are not aromatic so as to form a polycycle (e.g., tetralin).
- The term “alkenyl” includes unsaturated aliphatic groups analogous in length and possible substitution to the alkyls described above, but that contain at least one double bond.
- For example, the term “alkenyl” includes straight-chain alkenyl groups (e.g., ethylenyl, propenyl, butenyl, pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, etc.), branched-chain alkenyl groups, cycloalkenyl (alicyclic) groups (cyclopropenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, cyclooctenyl), alkyl or alkenyl substituted cycloalkenyl groups, and cycloalkyl or cycloalkenyl substituted alkenyl groups. The term alkenyl further includes alkenyl groups which include oxygen, nitrogen, sulfur or phosphorous atoms replacing one or more carbons of the hydrocarbon backbone. In certain embodiments, a straight chain or branched chain alkenyl group has 6 or fewer carbon atoms in its backbone (e.g., C2-C6 for straight chain, C3-C6 for branched chain). Likewise, cycloalkenyl groups may have from 3-8 carbon atoms in their ring structure, and more preferably have 5 or 6 carbons in the ring structure. The term C2-C6 includes alkenyl groups containing 2 to 6 carbon atoms.
- Moreover, the term alkenyl includes both “unsubstituted alkenyls” and “substituted alkenyls”, the latter of which refers to alkenyl moieties having substituents replacing a hydrogen on one or more carbons of the hydrocarbon backbone. Such substituents can include, for example, alkyl groups, alkynyl groups, halogens, hydroxyl, alkylcarbonyloxy, arylcarbonyloxy, alkoxycarbonyloxy, aryloxycarbonyloxy, carboxylate, alkylcarbonyl, arylcarbonyl, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, alkylthiocarbonyl, alkoxyl, phosphate, phosphonato, phosphinato, cyano, amino (including alkyl amino, dialkylamino, arylamino, diarylamino, and alkylarylamino), acylamino (including alkylcarbonylamino, arylcarbonylamino, carbamoyl and ureido), amidino, imino, sulfhydryl, alkylthio, arylthio, thiocarboxylate, sulfates, alkylsulfinyl, sulfonato, sulfamoyl, sulfonamido, nitro, trifluoromethyl, cyano, azido, heterocyclyl, alkylaryl, or an aromatic or heteroaromatic moiety.
- The term “alkynyl” includes unsaturated aliphatic groups analogous in length and possible substitution to the alkyls described above, but which contain at least one triple bond.
- For example, the term “alkynyl” includes straight-chain alkynyl groups (e.g., ethynyl, propynyl, butynyl, pentynyl, hexynyl, heptynyl, octynyl, nonynyl, decynyl, etc.), branched-chain alkynyl groups, and cycloalkyl or cycloalkenyl substituted alkynyl groups. The term alkynyl further includes alkynyl groups which include oxygen, nitrogen, sulfur or phosphorous atoms replacing one or more carbons of the hydrocarbon backbone. In certain embodiments, a straight chain or branched chain alkynyl group has 6 or fewer carbon atoms in its backbone (e.g., C2-C6 for straight chain, C3-C6 for branched chain). The term C2-C6 includes alkynyl groups containing 2 to 6 carbon atoms.
- Moreover, the term alkynyl includes both “unsubstituted alkynyls” and “substituted alkynyls”, the latter of which refers to alkynyl moieties having substituents replacing a hydrogen on one or more carbons of the hydrocarbon backbone. Such substituents can include, for example, alkyl groups, alkynyl groups, halogens, hydroxyl, alkylcarbonyloxy, arylcarbonyloxy, alkoxycarbonyloxy, aryloxycarbonyloxy, carboxylate, alkylcarbonyl, arylcarbonyl, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, alkylthiocarbonyl, alkoxyl, phosphate, phosphonato, phosphinato, cyano, amino (including alkyl amino, dialkylamino, arylamino, diarylamino, and alkylarylamino), acylamino (including alkylcarbonylamino, arylcarbonylamino, carbamoyl and ureido), amidino, imino, sulfhydryl, alkylthio, arylthio, thiocarboxylate, sulfates, alkylsulfinyl, sulfonato, sulfamoyl, sulfonamido, nitro, trifluoromethyl, cyano, azido, heterocyclyl, alkylaryl, or an aromatic or heteroaromatic moiety.
- Unless the number of carbons is otherwise specified, “lower alkyl” as used herein means an alkyl group, as defined above, but having from one to five carbon atoms in its backbone structure. “Lower alkenyl” and “lower alkynyl” have chain lengths of, for example, 2-5 carbon atoms.
- The term “acyl” includes compounds and moieties which contain the acyl radical (CH3CO—) or a carbonyl group. It includes substituted acyl moieties. The term “substituted acyl” includes acyl groups where one or more of the hydrogen atoms are replaced by for example, alkyl groups, alkynyl groups, halogens, hydroxyl, alkylcarbonyloxy, arylcarbonyloxy, alkoxycarbonyloxy, aryloxycarbonyloxy, carboxylate, alkylcarbonyl, arylcarbonyl, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, alkylthiocarbonyl, alkoxyl, phosphate, phosphonato, phosphinato, cyano, amino (including alkyl amino, dialkylamino, arylamino, diarylamino, and alkylarylamino), acylamino (including alkylcarbonylamino, arylcarbonylamino, carbamoyl and ureido), amidino, imino, sulfhydryl, alkylthio, arylthio, thiocarboxylate, sulfates, alkylsulfinyl, sulfonato, sulfamoyl, sulfonamido, nitro, trifluoromethyl, cyano, azido, heterocyclyl, alkylaryl, or an aromatic or heteroaromatic moiety.
- The term “acylamino” includes moieties wherein an acyl moiety is bonded to an amino group. For example, the term includes alkylcarbonylamino, arylcarbonylamino, carbamoyl and ureido groups.
- The term “aroyl” includes compounds and moieties with an aryl or heteroaromatic moiety bound to a carbonyl group. Examples of aroyl groups include phenylcarboxy, naphthyl carboxy, etc.
- The terms “alkoxyalkyl”, “alkylaminoalkyl” and “thioalkoxyalkyl” include alkyl groups, as described above, which further include oxygen, nitrogen or sulfur atoms replacing one or more carbons of the hydrocarbon backbone, e.g., oxygen, nitrogen or sulfur atoms.
- The term “alkoxy” includes substituted and unsubstituted alkyl, alkenyl, and alkynyl groups covalently linked to an oxygen atom. Examples of alkoxy groups include methoxy, ethoxy, isopropyloxy, propoxy, butoxy, and pentoxy groups. Examples of substituted alkoxy groups include halogenated alkoxy groups. The alkoxy groups can be substituted with groups such as alkenyl, alkynyl, halogen, hydroxyl, alkylcarbonyloxy, arylcarbonyloxy, alkoxycarbonyloxy, aryloxycarbonyloxy, carboxylate, alkylcarbonyl, arylcarbonyl, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, alkylthiocarbonyl, alkoxyl, phosphate, phosphonato, phosphinato, cyano, amino (including alkyl amino, dialkylamino, arylamino, diarylamino, and alkylarylamino), acylamino (including alkylcarbonylamino, arylcarbonylamino, carbamoyl and ureido), amidino, imino, sulfhydryl, alkylthio, arylthio, thiocarboxylate, sulfates, alkylsulfinyl, sulfonato, sulfamoyl, sulfonamido, nitro, trifluoromethyl, cyano, azido, heterocyclyl, alkylaryl, or an aromatic or heteroaromatic moieties. Examples of halogen substituted alkoxy groups include, but are not limited to, fluoromethoxy, difluoromethoxy, trifluoromethoxy, chloromethoxy, dichloromethoxy, trichloromethoxy, etc.
- The term “amine” or “amino” includes compounds where a nitrogen atom is covalently bonded to at least one carbon or heteroatom. The term includes “alkyl amino” which comprises groups and compounds wherein the nitrogen is bound to at least one additional alkyl group. The term “dialkyl amino” includes groups wherein the nitrogen atom is bound to at least two additional alkyl groups. The term “arylamino” and “diarylamino” include groups wherein the nitrogen is bound to at least one or two aryl groups, respectively. The term “alkylarylamino,” “alkylaminoaryl” or “arylaminoalkyl” refers to an amino group which is bound to at least one alkyl group and at least one aryl group. The term “alkaminoalkyl” refers to an alkyl, alkenyl, or alkynyl group bound to a nitrogen atom which is also bound to an alkyl group.
- The term “amide,” “amido” or “aminocarbonyl” includes compounds or moieties which contain a nitrogen atom which is bound to the carbon of a carbonyl or a thiocarbonyl group. The term includes “alkaminocarbonyl” or “alkylaminocarbonyl” groups which include alkyl, alkenyl, aryl or alkynyl groups bound to an amino group bound to a carbonyl group. It includes arylaminocarbonyl and arylcarbonylamino groups which include aryl or heteroaryl moieties bound to an amino group which is bound to the carbon of a carbonyl or thiocarbonyl group. The terms “alkylaminocarbonyl,” “alkenylaminocarbonyl,” “alkynylaminocarbonyl,” “arylaminocarbonyl,” “alkylcarbonylamino,” “alkenylcarbonylamino,” “alkynylcarbonylamino,” and “arylcarbonylamino” are included in term “amide.” Amides also include urea groups (aminocarbonylamino) and carbamates (oxycarbonylamino).
- The term “carbonyl” or “carboxy” includes compounds and moieties which contain a carbon connected with a double bond to an oxygen atom. The carbonyl can be further substituted with any moiety which allows the compounds of the invention to perform its intended function. For example, carbonyl moieties may be substituted with alkyls, alkenyls, alkynyls, aryls, alkoxy, aminos, etc. Examples of moieties which contain a carbonyl include aldehydes, ketones, carboxylic acids, amides, esters, anhydrides, etc.
- The term “thiocarbonyl” or “thiocarboxy” includes compounds and moieties which contain a carbon connected with a double bond to a sulfur atom.
- The term “ether” includes compounds or moieties which contain an oxygen bonded to two different carbon atoms or heteroatoms. For example, the term includes “alkoxyalkyl” which refers to an alkyl, alkenyl, or alkynyl group covalently bonded to an oxygen atom which is covalently bonded to another alkyl group.
- The term “ester” includes compounds and moieties which contain a carbon or a heteroatom bound to an oxygen atom which is bonded to the carbon of a carbonyl group. The term “ester” includes alkoxycarboxy groups such as methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, butoxycarbonyl, pentoxycarbonyl, etc. The alkyl, alkenyl, or alkynyl groups are as defined above.
- The term “thioether” includes compounds and moieties which contain a sulfur atom bonded to two different carbon or hetero atoms. Examples of thioethers include, but are not limited to alkthioalkyls, alkthioalkenyls, and alkthioalkynyls. The term “alkthioalkyls” include compounds with an alkyl, alkenyl, or alkynyl group bonded to a sulfur atom which is bonded to an alkyl group. Similarly, the term “alkthioalkenyls” and alkthioalkynyls” refer to compounds or moieties wherein an alkyl, alkenyl, or alkynyl group is bonded to a sulfur atom which is covalently bonded to an alkynyl group.
- The term “hydroxy” or “hydroxyl” includes groups with an —OH or —O−.
- The term “halogen” includes fluorine, bromine, chlorine, iodine, etc. The term “perhalogenated” generally refers to a moiety wherein all hydrogens are replaced by halogen atoms.
- The terms “polycyclyl” or “polycyclic radical” refer to two or more cyclic rings (e.g., cycloalkyls, cycloalkenyls, cycloalkynyls, aryls and/or heterocyclyls) in which two or more carbons are common to two adjoining rings, e.g., the rings are “fused rings”. Rings that are joined through non-adjacent atoms are termed “bridged” rings. Each of the rings of the polycycle can be substituted with such substituents as described above, as for example, halogen, hydroxyl, alkylcarbonyloxy, arylcarbonyloxy, alkoxycarbonyloxy, aryloxycarbonyloxy, carboxylate, alkylcarbonyl, alkoxycarbonyl, alkylaminoacarbonyl, arylalkylaminocarbonyl, alkenylaminocarbonyl, alkylcarbonyl, arylcarbonyl, arylalkyl carbonyl, alkenylcarbonyl, aminocarbonyl, alkylthiocarbonyl, alkoxyl, phosphate, phosphonato, phosphinato, cyano, amido, amino (including alkyl amino, dialkylamino, arylamino, diarylamino, and alkylarylamino), acylamino (including alkylcarbonylamino, arylcarbonylamino, carbamoyl and ureido), amidino, imino, sulfhydryl, alkylthio, arylthio, thiocarboxylate, sulfates, alkylsulfinyl, sulfonato, sulfamoyl, sulfonamido, nitro, trifluoromethyl, cyano, azido, heterocyclyl, alkyl, alkylaryl, or an aromatic or hetero aromatic moiety.
- The term “heteroatom” includes atoms of any element other than carbon or hydrogen. Preferred heteroatoms are nitrogen, oxygen, sulfur and phosphorus.
- The term “prodrug moiety” includes moieties which can be metabolized in vivo to a hydroxyl group and moieties which may advantageously remain esterified in vivo. Preferably, the prodrugs moieties are metabolized in vivo by esterases or by other mechanisms to hydroxyl groups or other advantageous groups. Examples of prodrugs and their uses are well known in the art (See, e.g., Berge et al. (1977) “Pharmaceutical Salts”, J. Pharm. Sci. 66:1-19). The prodrugs can be prepared in situ during the final isolation and purification of the compounds, or by separately reacting the purified compound in its free acid form or hydroxyl with a suitable esterifying agent. Hydroxyl groups can be converted into esters via treatment with a carboxylic acid. Examples of prodrug moieties include substituted and unsubstituted, branch or unbranched lower alkyl ester moieties, (e.g., propionoic acid esters), lower alkenyl esters, di-lower alkyl-amino lower-alkyl esters (e.g., dimethylaminoethyl ester), acylamino lower alkyl esters (e.g., acetyloxymethyl ester), acyloxy lower alkyl esters (e.g., pivaloyloxymethyl ester), aryl esters (phenyl ester), aryl-lower alkyl esters (e.g., benzyl ester), substituted (e.g., with methyl, halo, or methoxy substituents) aryl and aryl-lower alkyl esters, amides, lower-alkyl amides, di-lower alkyl amides, and hydroxy amides. Preferred prodrug moieties are propionoic acid esters and acyl esters.
- It will be noted that the structure of some of the tetracycline compounds of this invention includes asymmetric carbon atoms. It is to be understood accordingly that the isomers arising from such asymmetry (e.g., all enantiomers and diastereomers) are included within the scope of this invention, unless indicated otherwise. Such isomers can be obtained in substantially pure form by classical separation techniques and by stereochemically controlled synthesis. Furthermore, the structures and other compounds and moieties discussed in this application also include all tautomers thereof.
- In a further embodiment, the invention pertains to a kit comprising a tetracycline compound and instructions for administering a therapeutically effective amount of the tetracycline compound in combination with a bioavailability enhancing agent to the intestinal tract of a subject.
- In another embodiment, the invention pertains to pharmaceutical composition comprising a therapeutically effective amount of a tetracycline compound in combination with a bioavailability enhancing agent and a pharmaceutically acceptable carrier for administration of said tetracycline compound to the intestinal tract. The bioavailability enhancing agent and the tetracycline compound may be administered concurrently in separate or in the same pharmaceutical composition.
- The language “effective amount” of the tetracycline compound is that amount necessary or sufficient to treat a subject. The effective amount can vary depending on such factors as the size and weight of the subject, the type of illness, or the particular tetracycline compound. For example, the choice of the tetracycline compound can affect what constitutes an “effective amount”. One of ordinary skill in the art would be able to study the aforementioned factors and make the determination regarding the effective amount of the tetracycline compound without undue experimentation.
- The language “pharmaceutically acceptable carrier” includes substances capable of being coadministered with the tetracycline compound(s), and which allow both to perform their intended function. Suitable pharmaceutically acceptable carriers include but are not limited to water, salt solutions, alcohol, vegetable oils, polyethylene glycols, gelatin, lactose, amylose, magnesium stearate, talc, silicic acid, viscous paraffin, perfume oil, fatty acid monoglycerides and diglycerides, petroethral fatty acid esters, hydroxymethyl-cellulose, polyvinylpyrrolidone, etc. The pharmaceutical preparations can be sterilized and if desired mixed with auxiliary agents, e.g., lubricants, preservatives, stabilizers, wetting agents, emulsifiers, salts for influencing osmotic pressure, buffers, colorings, flavorings and/or aromatic substances and the like which do not deleteriously react with the active compounds of the invention.
- The tetracycline compounds of the invention that are basic in nature are capable of forming a wide variety of salts with various inorganic and organic acids. The acids that may be used to prepare pharmaceutically acceptable acid addition salts of the tetracycline compounds of the invention that are basic in nature are those that form non-toxic acid addition salts, i.e., salts containing pharmaceutically acceptable anions, such as the hydrochloride, hydrobromide, hydroiodide, nitrate, sulfate, bisulfate, phosphate, acid phosphate, isonicotinate, acetate, lactate, salicylate, citrate, acid citrate, tartrate, pantothenate, bitartrate, ascorbate, succinate, maleate, gentisinate, fumarate, gluconate, glucaronate, saccharate, formate, benzoate, glutamate, methanesulfonate, ethanesulfonate, benzenesulfonate, p-toluenesulfonate and palmoate [i.e., 1,1′-methylene-bis-(2-hydroxy-3-naphthoate)] salts. Although such salts must be pharmaceutically acceptable for administration to a subject, e.g., a mammal, it is often desirable in practice to initially isolate a tetracycline compound of the invention from the reaction mixture as a pharmaceutically unacceptable salt and then simply convert the latter back to the free base compound by treatment with an alkaline reagent and subsequently convert the latter free base to a pharmaceutically acceptable acid addition salt. The acid addition salts of the base compounds of this invention are readily prepared by treating the base compound with a substantially equivalent amount of the chosen mineral or organic acid in an aqueous solvent medium or in a suitable organic solvent, such as methanol or ethanol. Upon careful evaporation of the solvent, the desired solid salt is readily obtained. The preparation of other tetracycline compounds of the invention not specifically described in the foregoing experimental section can be accomplished using combinations of the reactions described above that will be apparent to those skilled in the art.
- The tetracycline compounds of the invention that are acidic in nature are capable of forming a wide variety of base salts. The chemical bases that may be used as reagents to prepare pharmaceutically acceptable base salts of those tetracycline compounds of the invention that are acidic in nature are those that form non-toxic base salts with such compounds. Such non-toxic base salts include, but are not limited to those derived from such pharmaceutically acceptable cations such as alkali metal cations (e.g., potassium and sodium) and alkaline earth metal cations (e.g., calcium and magnesium), ammonium or water-soluble amine addition salts such as N-methylglucamine-(meglumine), and the lower alkanolammonium and other base salts of pharmaceutically acceptable organic amines. The pharmaceutically acceptable base addition salts of tetracycline compounds of the invention that are acidic in nature may be formed with pharmaceutically acceptable cations by conventional methods. Thus, these salts may be readily prepared by treating the tetracycline compound of the invention with an aqueous solution of the desired pharmaceutically acceptable cation and evaporating the resulting solution to dryness, preferably under reduced pressure. Alternatively, a lower alkyl alcohol solution of the tetracycline compound of the invention may be mixed with an alkoxide of the desired metal and the solution subsequently evaporated to dryness.
- The tetracycline compounds of the invention and pharmaceutically acceptable salts thereof can be administered orally. In general, these compounds are most desirably administered in effective dosages, depending upon the weight and condition of the subject being treated and the particular route of administration chosen. Variations may occur depending upon the species of the subject being treated and its individual response to said medicament, as well as on the type of pharmaceutical formulation chosen and the time period and interval at which such administration is carried out.
- The tetracycline compounds of the invention may be administered alone or in combination with pharmaceutically acceptable carriers or diluents by any of the routes previously mentioned, and the administration may be carried out in single or multiple doses. For example, the novel therapeutic agents of this invention can be administered advantageously in a wide variety of different dosage forms, i.e., they may be combined with various pharmaceutically acceptable inert carriers in the form of tablets, capsules, aqueous suspensions, injectable solutions and the like. Such carriers include solid diluents or fillers, sterile aqueous media and various non-toxic organic solvents, etc. Moreover, oral pharmaceutical compositions can be suitably sweetened and/or flavored. In general, the therapeutically-effective compounds of this invention are present in such dosage forms at concentration levels ranging from about 5.0% to about 70% by weight.
- For oral administration, tablets containing various excipients such as microcrystalline cellulose, sodium citrate, calcium carbonate, dicalcium phosphate and glycine may be employed along with various disintegrants such as starch (and preferably corn, potato or tapioca starch), alginic acid and certain complex silicates, together with granulation binders like polyvinylpyrrolidone, sucrose, gelatin and acacia. Additionally, lubricating agents such as magnesium stearate, sodium lauryl sulfate and talc are often very useful for tabletting purposes. Solid compositions of a similar type may also be employed as fillers in gelatin capsules; preferred materials in this connection also include lactose or milk sugar as well as high molecular weight polyethylene glycols. The compositions of the invention may be formulated such that the tetracycline compositions are released over a period of time after administration.
- For enteral application, particularly suitable are tablets, dragees or capsules having talc and/or carbohydrate carrier binder or the like, the carrier preferably being lactose and/or corn starch and/or potato starch. Sustained release compositions can be formulated including those wherein the active component is protected with differentially degradable coatings, e.g., by microencapsulation, multiple coatings, etc.
- Enteric coatings (which generally do not substantially dissolve in solutions with a pH lower than about 5.5) may delay release of the tetracycline compound until delivery to the intestinal tract. Examples of enteric coatings include, but are not limited to, coatings made from methacrylic acid copolymers, cellulose acetate (and its succinate and phthalate versions), styrol maleic acid copolymers, polymethacrylic acid/acrylic acid copolymer, hydroxypropyl methyl cellulose phthalate, polyvinyl acetate phthalate, hydroxyethyl ethyl cellulose phthalate, hydroxypropyl methyl cellulose acetate succinate, cellulose acetate tetrahydrophtalate, acrylic resin, timellitate, and shellac, and combinations thereof.
- In addition to treatment of human subjects, the therapeutic methods of the invention also will have significant veterinary applications, e.g. for treatment of livestock such as cattle, sheep, goats, cows, swine and the like; poultry such as chickens, ducks, geese, turkeys and the like; horses; and pets such as dogs and cats.
- It will be appreciated that the actual preferred amounts of active compounds used in a given therapy will vary according to the specific compound being used, the particular compositions formulated, the mode of application, the particular site of administration, etc. Optimal administration rates for a given protocol of administration can be readily ascertained by those skilled in the art using conventional dosage determination tests conducted with regard to the foregoing guidelines.
- In general, compounds of the invention for treatment can be administered to a subject in dosages used in prior tetracycline therapies. See, for example, the Physicians' Desk Reference. For example, a suitable effective dose of one or more compounds of the invention will be in the range of from 0.01 to 100 milligrams per kilogram of body weight of recipient per day, preferably in the range of from 0.1 to 50 milligrams per kilogram body weight of recipient per day, more preferably in the range of 1 to 20 milligrams per kilogram body weight of recipient per day. The desired dose is suitably administered once daily, or several sub-doses, e.g. 2 to 5 sub-doses, are administered at appropriate intervals through the day, or other appropriate schedule.
- It will also be understood that normal, conventionally known precautions will be taken regarding the administration of tetracyclines generally to ensure their efficacy under normal use circumstances. Especially when employed for therapeutic treatment of humans and animals in vivo, the practitioner should take all sensible precautions to avoid conventionally known contradictions and toxic effects. Thus, the conventionally recognized adverse reactions of gastrointestinal distress and inflammations, the renal toxicity, hypersensitivity reactions, changes in blood, and impairment of absorption through aluminum, calcium, and magnesium ions should be duly considered in the conventional manner.
- The bioavailability of 9-[(2,2, dimethyl-propyl amino)-methyl]-minocycline following intravenous administration in rats was studied. The freebase (“FB”) and the HCl salt (“HCl salt”) of 9-[(2,2, dimethyl-propyl amino)-methyl]-minocycline were used. All formulations were prepared fresh on the day of the experiment. Samples for pharmacokinetic analysis were collected from a cannula within the carotid artery of the rats. Intravenous doses of (1 mg/kg) were administered to rats through cannulas in either the jugular or portal veins. The results of this studied are summarized in Table 2.
-
TABLE 2 PK parameters following intravenous administration of 9-[(2,2, dimethyl-propyl amino)-methyl[-minocycline in rats. Route of Fed AUC Formulation admin. state (ug*hr/mL) FB Jugular vein Fasted 0.57 (0.50; 0.63) HCl salt Jugular vein Fed 0.46 ± 0.04 HCl salt Jugular vein Fasted 0.59 (0.45; 0.73) HCl salt Portal vein Fasted 0.59 (0.52; 0.66) - It was found that there were no significant differences in pharmacokinetic parameters after IV administration of the freebase (FB) or the HCl salt in fasted animals. However, tendency for higher clearance (˜22%) was observed in a fed group. The total exposure (e.g., the area under the curve (AUC)) and clearance after administration of the HCL salt into the portal vein was equal to its exposure and clearance after administration into the jugular vein in fasted animals. It was determined that there were no significant effects of first pass hepatic elimination on pharmacokinetics of PTK after IV dosing.
- Solutions of 9-[(2,2, dimethyl-propyl amino)-methyl]-minocycline freebase (5 mg/kg [2 ml/kg]) were administered by oral gavage. The solutions were composed of 9-[(2,2, dimethyl-propyl amino)-methyl]-minocycline alone or in combination with bioavailability enhancing agents to assess their effect on oral bioavailability.
-
TABLE 3 Pharmacokinetic parameters of 9-[(2,2, dimethyl-propyl amino)-methyl[-minocycline following dosing via oral gavage. AUC Formulation (hr*ug/mL) % F a FB, Polysorbate 80 (TWEEN-80) 0.47 16.6 (17.8; 15.3) 10% FB, Octanol 0.26 9.3 (3.1; 15.4) FB, Octanol:oil (1:9) 0.15 ± 0.10 5.3 ± 3.5 FB, Ethanol:oil (1:9) 0.20 ± 0.17 7.1 ± 6.2 FB 0.33 ± 0.12 11.7 ± 4.1 FB, PTK-FB, NaBisulfite 0.33 ± 0.12 11.7 ± 4.3 FB, CaCl2 0.24 ± 0.06 8.5 ± 2.0 - The oral bioavailability (% F) for the various solutions is shown in Table 3. The % F was calculated using the IV data presented in Example 1 and the equation:
-
% F=Oral AUC/IV AUC. - In order to measure the effect of delivering 9-[(2,2, dimethyl-propyl amino)-methyl]-minocycline directly into the duodenum, rats bearing duodenal cannulas were administered 9-[(2,2, dimethyl-propyl amino)-methyl]-minocycline freebase alone or in combination with bioavailability enhancing agents to assess their effects on bioavailability.
-
TABLE 4 PK parameters of 9-[(2,2, dimethyl-propyl amino)-methyl]-minocycline following intra-duodenal administration. AUC Formulation (ug*hr/mL) % F FB 0.44 ± 0.15 15.4 ± 5.2 FB, 10% Polysorbate 0.79 (0.76; 0.82) 28 (27; 29) 80 (TWEEN 80) FB, 20% Polysorbate 1.21 ± 0.18 42.7 ± 6.5 80 (TWEEN 80) FB, NaBis, Lubricant 1.12 (1.18; 1.06) 39.6 (41.6; 37.3) FB, 0.5 mM EDTA 0.89 ± 0.30 31.4 ± 10.7 FB, 0.5 mM EDTA, 1.47 (1.79; 1.16) 52.1 (63.3; 40.9) 10% Polysorbate 80 (TWEEN 80) - This study shows that there is a significant increase in AUC, when the freebase is administered directly to the rats' duodenum. It was also found that polysorbate 80 (TWEEN-80) had a positive effect on bioavailability (% F). Based on AUC, 10% and 20% polysorbate 80 (TWEEN-80) resulted in a 2-fold and 3-fold greater exposure, respectively. The increase in bioavailability was linearly related to the concentration of polysorbate 80 (TWEEN-80). It was also noted that 0.5 M of EDTA had a significant (2-fold) impact on bioavailability of the compound. The addition of both 0.5 M of EDTA and 10% polysorbate 80 (TWEEN-80) had a synergistic effect. Individually, each additive increased bioavailability by ˜2-fold whereas both agents together had a greater than 3-fold effect. In addition, sodium bisulfate (an antioxidant) and coloidal silicon dioxide (AEROSIL) (a lubricant) also lead to a 2-fold increase in bioavailability.
- As a control, a solution of 9-[(2,2, dimethyl-propyl amino)-methyl]-minocycline freebase (“freebase”) was prepared using sterile water and the final pH was adjusted to ˜5. To prepare the sodium caprate (sodium decanoate, a compound that increases paracellular permeability) containing solution, the freebase was first dissolved in sterile water and sodium caprate was then added to a final concentration of 13 mM. The resulting solution was administered to rats via oral gavage without pH adjustment. The solution of freebase containing 1.5% chitosan was then prepared by first dissolving the freebase in sterile water and then adjusting the pH of this solution (pH ˜8.1) to a final pH ˜5 using 1N HCl. Chitosan was then added to a final concentration of 1.5% and the resulting solution was administered to rats via oral gavage as a slurry.
-
TABLE 5 Effects of permeability enhancers on the bioavailability of 9-[(2,2, dimethyl-propyl amino)-methyl]- minocycline administered by oral gavage. AUC Formulation (ug*hr/mL) % F FB (pH 8.1) 0.33 ± 0.12 11.7 ± 4.1 FB (pH 5) 0.42 ± 0.11 14.7 ± 3.8 FB, sodium caprate 0.44 (0.37; 0.51) 15.5 (13.1; 17.9) FB, chitosan 0.47 ± 0.25 16.6 ± 8.9 - It was found that the permeability enhancers sodium caprate and chitosan did not show a statistically significant effect on bioavailability.
- Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, numerous equivalents to the specific procedures described herein. Such equivalents are considered to be within the scope of the present invention and are covered by the following claims. The contents of all references, patents, and patent applications cited throughout this application are hereby incorporated by reference. The appropriate components, processes, and methods of those patents, applications and other documents may be selected for the present invention and embodiments thereof.
Claims (19)
1. A method for increasing oral bioavailability of a tetracycline compound in a subject, comprising administering said tetracycline compound to a subject in combination with a bioavailability enhancing agent such that the tetracycline compound is released in the intestinal tract.
2. The method of claim 1 , wherein the bioavailability is increased by about 5% or greater.
3-6. (canceled)
7. The method of claim 1 , wherein the bioavailability enhancing agent is a charge masking compound, a solubilizing compound, a reducing compound, a stabilizing compound, a lubricating compound, a permeability enhancing compound, or a combination thereof.
8. The method of claim 7 , wherein the bioavailability enhancing agent is polysorbate 80 (TWEEN-80), ethylenediaminetetraacetic acid (EDTA), sodium bisulfite, octanol, oil ethanol, calcium chloride, or silicon dioxide.
9. The method of claim 7 , wherein the bioavailability enhancing agent comprises a combination of a lubricating compound with another agent.
10. The method of claim 9 , wherein the bioavailability enhancing agent is a combination of a lubricating compound with sodium bisulfite.
11. The method of claim 10 , wherein said lubricating compound is AEROSIL 200.
12. The method of claim 1 , wherein the tetracycline compound is administered to the small intestine or to the duodenum.
13. (canceled)
14. The method of claim 1 , wherein the tetracycline compound is administered by a gastric feeding tube or by a duodenal feeding tube.
15. (canceled)
16. The method of claim 1 , wherein the tetracycline compound is formulated with an enteric coating.
17. The method of claim 1 , wherein said tetracycline compound is of formula I:
wherein
R1 is hydrogen, alkyl, alkenyl, alkynyl, aryl, arylalkyl, amido, alkylamino, amino, arylamino, alkylcarbonyl, arylcarbonyl, alkylaminocarbonyl, alkoxy, alkoxycarbonyl, alkylcarbonyloxy, alkyloxycarbonyloxy, arylcarbonyloxy, aryloxy, thiol, alkylthio, arylthio, alkenyl, heterocyclic, hydroxy, or halogen, optionally linked to R2 to form a ring;
R2″ is cyano or C(═O)—NR2R2′;
R2 is hydrogen, alkyl, halogen, alkenyl, alkynyl, aryl, hydroxyl, thiol, cyano, nitro, acyl, formyl, alkoxy, amino, alkylamino, heterocyclic, or absent, optionally linked to R1 to form a ring;
R2′, R4a, and R4b are each independently hydrogen, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkyl amino, arylalkyl, aryl, heterocyclic, heteroaromatic or a pro drug moiety;
R10, R11 and R12 are each independently hydrogen, alkyl, aryl, benzyl, arylalkyl, or a pro-drug moiety;
R12″ is O—R12, hydrogen, or substituted amino;
R4 and R4′ are each independently NR4aR4b, alkyl, acyl, alkenyl, alkynyl, hydroxyl, halogen, hydrogen, or taken together ═N—OR4a;
R5 and R5′ are each independently hydroxyl, hydrogen, thiol, alkanoyl, aroyl, alkaroyl, aryl, heteroaromatic, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, arylalkyl, alkyl carbonyloxy, or aryl carbonyloxy;
R6 and R6′ are each independently hydrogen, methylene, absent, hydroxyl, halogen, thiol, alkyl, alkenyl, alkynyl, aryl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, or an arylalkyl;
R7 is hydrogen, dialkylamino, hydroxyl, halogen, thiol, nitro, alkyl, alkenyl, alkynyl, aryl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, arylalkyl, amino, arylalkenyl, arylalkynyl, acyl, aminoalkyl, heterocyclic, boronic ester, alkylcarbonyl, thionitroso, or —(CH2)0-3 (NR7c)0-1C(═W′)WR7a;
R8 is hydrogen, hydroxyl, halogen, thiol, nitro, alkyl, alkenyl, alkynyl, aryl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, amino, arylalkenyl, arylalkynyl, acyl, aminoalkyl, heterocyclic, thionitroso, or —(CH2)0-3 (NR8c)0-1C(=E′)ER8a;
R9 is hydrogen, hydroxyl, halogen, thiol, nitro, alkyl, alkenyl, alkynyl, aryl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, aryl alkyl, amino, arylalkenyl, arylalkynyl, acyl, amino alkyl, heterocyclic, thionitroso, or —(CH2)0-3 (NR9c)0-1C(═Z′)ZR9a;
R7a, R7b, R7c, R7d, R7e, R7f, R8a, R8b, R8c, R8d, R8e, R8f, R9a, R9b, R9c, R9d, R9e, and R9f are each independently hydrogen, acyl, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, arylalkyl, aryl, heterocyclic, heteroaromatic or a prodrug moiety;
R13 is hydrogen, hydroxy, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, aryl, alkylsulfinyl, alkylsulfonyl, alkylamino, or an arylalkyl;
E is CR8R8e, S, NR8b or O;
E1 is O, NR8, or S,
Q is a double bond when R2 is absent, Q is a single bond when R2 is hydrogen, alkyl, halogen, hydroxyl, thiol, alkenyl, alkynyl, aryl, acyl, formyl, alkoxy, amino, alkylamino, cyano, nitro, or heterocyclic;
W is CR7d, R7e, S, NR7b or O,
W′ is O, NR7f or S;
X is CHC(R13Y′Y), C═CR13Y, CR6R6, S, NR6, or O;
Y′ and Y are each independently hydrogen, halogen, hydroxyl, cyano, sulfhydryl, amino, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, or an arylalkyl;
Z is CR9dR9e, S, NR9b or O;
Z′ is O, S, or NR9f, and pharmaceutically acceptable salts, esters and enantiomers thereof.
18-29. (canceled)
30. A pharmaceutical composition comprising a therapeutically effective amount of a tetracycline compound in combination with a bioavailability enhancing agent and a pharmaceutically acceptable carrier for administration of said tetracycline compound to the intestinal tract.
31. The pharmaceutical composition of claim 30 , wherein said tetracycline compound and said bioavailability enhancing agent are formulated for separate administration.
32. The pharmaceutical composition of claim 30 , wherein said tetracycline compound and said bioavailability enhancing agent are formulated for concurrent administration.
33. A kit comprising a tetracycline compound and instructions for administering a therapeutically effective amount of the tetracycline compound in combination with a bioavailability enhancing agent to the intestinal tract of a subject.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/789,506 US20160030453A1 (en) | 2006-01-24 | 2015-07-01 | Methods of increasing oral bioavailability of tetracyclines |
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| Application Number | Priority Date | Filing Date | Title |
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| US76181906P | 2006-01-24 | 2006-01-24 | |
| US11/657,412 US9078811B2 (en) | 2006-01-24 | 2007-01-24 | Methods of increasing oral bioavailability of tetracyclines |
| US14/789,506 US20160030453A1 (en) | 2006-01-24 | 2015-07-01 | Methods of increasing oral bioavailability of tetracyclines |
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| US14/789,506 Abandoned US20160030453A1 (en) | 2006-01-24 | 2015-07-01 | Methods of increasing oral bioavailability of tetracyclines |
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| AU (2) | AU2007208214B2 (en) |
| CA (1) | CA2639406A1 (en) |
| WO (1) | WO2007087416A2 (en) |
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2010
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Also Published As
| Publication number | Publication date |
|---|---|
| AU2010236028A1 (en) | 2010-11-18 |
| WO2007087416A3 (en) | 2007-09-20 |
| JP2009524675A (en) | 2009-07-02 |
| AU2007208214B2 (en) | 2013-02-14 |
| US20080070873A1 (en) | 2008-03-20 |
| US9078811B2 (en) | 2015-07-14 |
| EP2298324A1 (en) | 2011-03-23 |
| JP2010106043A (en) | 2010-05-13 |
| CA2639406A1 (en) | 2007-08-02 |
| WO2007087416A2 (en) | 2007-08-02 |
| EP1991236A2 (en) | 2008-11-19 |
| AU2007208214A1 (en) | 2007-08-02 |
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