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CN106336403A - Industrial preparation method for empagliflozin - Google Patents

Industrial preparation method for empagliflozin Download PDF

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Publication number
CN106336403A
CN106336403A CN201510413692.7A CN201510413692A CN106336403A CN 106336403 A CN106336403 A CN 106336403A CN 201510413692 A CN201510413692 A CN 201510413692A CN 106336403 A CN106336403 A CN 106336403A
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Prior art keywords
palie
acid
compound
formula
net preparation
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Inventor
唐红伟
袁恒立
王小雷
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Jiangsu Hansoh Pharmaceutical Group Co Ltd
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Jiangsu Hansoh Pharmaceutical Group Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D407/00Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00
    • C07D407/02Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00 containing two hetero rings
    • C07D407/12Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00 containing two hetero rings linked by a chain containing hetero atoms as chain links
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/55Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The invention discloses an industrial preparation method for empagliflozin. Specifically, the invention relates to a preparation method for empagliflozin as shown in formula as defined in the specification, i.e., (1S)-1,5-dehydro-1-(4-chloro-3{4-[(3S)-tetrahydrofuran-3-yloxy]benzyl}pheyl)-D-glucitol, and an intermediate prepared by using the method. The preparation method for empagliflozin in the invention is stable in process, good in reproducibility and suitable for large-scale production.

Description

The net industrial production process of Yi Palie
Technical field
The present invention relates to medicinal chemistry arts and in particular to a kind of Yi Palie be only (1s) 1,5 take off The work of water 1 (4 chlorine 3 { 4 [(3s) oxolane 3 base epoxide] benzyl } phenyl) d glucitol Industry preparation method.
Background technology
The diabetes epidemiology of 200 years diabetology branch of Chinese Medical Association (cds) tissues Survey result shows, estimates that China adult prevalence rate of more than 20 years old is 9.7%, adult patient Sum reaches 92,400,000 people, and China is likely to become the most country of number of patients in the world.China More than 90% diabeticss are ii patients with type Ⅰ DM, except fraction is through Diet Therapy and motion Treat beyond the ii patients with type Ⅰ DM patient that can control, all need Drug therapy.Yi Palie is net, full name: (1s) -1,5- dehydration -1- (the chloro- 3- of 4- { 4- [(3s)-oxolane -3- base epoxide] benzyl } phenyl)-d- Portugal Grape sugar alcohol, English name: empagliflozin, its structural formula is as follows:
Yi Palie, only by boehringeringelheim and eli lilly joint development, is a kind of sodium Dependent glucose cotransporter sglt2 inhibitor, for treating ii patients with type Ⅰ DM, This product has very big market potential and growth space.
Document with regard to Yi Palie net system Preparation Method and patent have two methods, are summarized as follows:
Method 1:
Patent cn103030617a reports the net preparation method of following Yi Palie:
This route is with glucono-δ-lactone and the chloro- 4- of 1- bromo- 2- [4- (t-Butyldimethylsilyl Epoxide)-benzyl]-benzene be initiation material, the ratio of addition compound product beta/alpha mixture after silica gel purification Example is 6:1, needs the dichloromethane solution through acetic anhydride and pyridine by its hydroxyl completely acylated, And in ethanol recrystallization and be converted into pure beta isomer, then in methyl alcohol with potassium hydroxide Solution reaction.In this route, final step reaction is related to the change of chiral carbon atom configuration, that is, Phenolic hydroxyl group intermediate is reacted with (r)-oxolane -3- base -4- toluene sulfonic acide ester under alkali effect Obtain finished product, the content of isomer of finished product is difficult to control to, this route yield is relatively low simultaneously, thus Be not suitable for amplifying and produce.
Method 2:
It is net that patent cn102574829a and cn101193903b report following Yi Palie Preparation method:
This route with glucono-δ-lactone and (s) -3- (4- (the chloro- benzyl of the iodo- 2- of 5-) phenoxy group) - Oxolane be initiation material, sequentially pass through the three-step reactions such as protection, condensation, reduction obtain according to Handkerchief row are net, but reduce in this route counter need to carry out in anhydrous conditions, moisture presence can be led Cause to produce impurity (structure is as follows) in reduction process, therefore this technique is not suitable for amplifying and produces.
The invention that aims at of the present invention a kind of prepares the net new method of Yi Palie.
Content of the invention
It is an object of the invention to solution above-mentioned technical problem, provide that a kind of to prepare Yi Palie net New method, this process is simple is stable, reliable product quality, be applicable to commercial production.
The technical scheme is that and realize in the following manner:
Formula i compound is removed protection group and Yi Palie is obtained only, wherein r1Represent (c1-4- alkyl) Carbonyl.
Preferably, the method removing formula i protection group is at a temperature of between 0 to 100 DEG C, Under the acid conditions such as trifluoroacetic acid, hydrochloric acid or sulphuric acid, or sodium hydroxide, Lithium hydrate, In the presence of the alkali metal hydroxides such as potassium hydroxide, hydrolysis removes.
Formula i compound is to be obtained by the reduction of formula ii compound, wherein r1And r2As above Defined.
Preferably, the method for described formula ii compound reduction is in lewis acid such as boron trifluoride Ether or aluminum chloride and reaction dissolvent such as acetonitrile, acetonitrile/toluene Mixed Solvent or acetonitrile/bis- In the presence of chloromethanes mixed solvent, at 0~50 DEG C of temperature, formula i is reduced by reducing agent Compound, described reducing agent is selected from silane derivative, preferably trialkylsilane, and more preferably three Ethylsilane.
Formula ii compound is to be acylated formula iii compound with acylating reagents such as carboxylic acid halides, anhydride Reaction is obtained.
Preferably, acylation reaction is carried out in the presence of a base: described alkali be selected from triethylamine, Trimethylamine, n, n- diisopropylethylamine, pyridine and DMAP.
Formula (iii) compound is to be prepared into its organo-metallic compound (v) by formula (iv) compound, Additive reaction is occurred to be obtained by metallic compound (v) and formula (vi) again, r2、r3、x With m as hereinbefore defined.
Preferably, formula v compound be by formula iv compound through halogen-metal exchange reaction or Metal is inserted in carbon-halogen bond and is obtained.Preferably, formula v metal compound can use The organolithium reagents such as n-BuLi, s-butyl lithium or tert-butyl lithium, described organolithium reagent is preferred Amount be in the range of about 1 to 2 mole.Alternatively, formula v metallization Thing can also use Grignard reagent, preferably c3-4- alkyl magnesium chloride thing or bromide, in lithium chloride Do not exist etc. the other salts that can accelerate metallization processes or in the presence of, by halogen - metal exchange can generate similar magnesium compound, and it is about 1 to 5 to rub that organomagnesium reagent is preferably measured In the range of you.
Preferably between -100 to 40 DEG C, more preferably between -80 to -10 DEG C, in inertia In solvent or its mixture, formula v compound is added in formula vi compound or derivatives thereof, Then hydroxyl protecting group is removed by addition compound product in acid condition, and form sugar with alcohol Glycosides.Preferably, described acid is selected from the mineral acids such as hydrochloric acid, sulphuric acid;Formic acid, acetic acid, trifluoro The organic acid such as acetic acid, methanesulfonic acid;The lewis acids such as boron trifluoride, aluminum chloride.For being formed The alcohol of glucosides is selected from the alkylols such as methanol, ethanol, normal propyl alcohol.
All above reactions all can be carried out in atmosphere, preferably in the noble gases such as argon or nitrogen Carry out under environment.
Inventor passes through lot of experiment validation, the stable processing technique of the present invention, and reproducibility is good, Suitable large-scale production, especially goes for pilot scale and workshop large-scale production.
Specific embodiment
In order to further illustrate the present invention, below in conjunction with specific embodiment, the present invention is had Body illustrates, but protection scope of the present invention is not limited to specific embodiment.
Embodiment 1:2,3,4,6- tetra--o- trimethyl silicon substrate-d- glucono-δ-lactone
3.6kg glucono-δ-lactone, 36l tetrahydrochysene furan is added in 100l low-temp reaction kettle Mutter and 16kg n- methyl morpholine, stirring and dissolving, reactant liquor is cooled to Deca 12kg after -5~5 DEG C Trim,ethylchlorosilane.Completion of dropping, reactant liquor is transferred in 100l reactor, 10~30 DEG C of temperature control Reaction 16~18 hours.
Reactant liquor is cooled to 0~10 DEG C, adds 30l purified water, point liquid, collect organic faciess, Aqueous phase 30l normal heptane extraction, merges organic faciess and uses 5% potassium dihydrogen phosphate aqueous solution successively Washing (20l × 2), 20% sodium-chloride water solution washing (20l × 1).Organic faciess anhydrous slufuric acid Sodium is dried, and filters, and filtrate reduced in volume is extremely dry to obtain title compound 9.5kg, molar yield 100.7%.
Embodiment 2: methyl isophthalic acid-c- (the chloro- 3- of 4- { 4- [(3s)-oxolane -3- base epoxide] benzyl } Phenyl)-d- pyranglucoside
15l oxolane, 15l toluene and 4.8kg (s) -3- (4- (5- is added in 100l reactor Iodo- 2- chlorobenzyl) phenoxy group) oxolane, stirring and dissolving, under nitrogen protection, reactant liquor is lowered the temperature To -80~-70 DEG C, Deca 7l 2.5m n-BuLi hexane solution, completion of dropping temperature control reacts 1~1.5 hour.Control -80~-70 DEG C of Deca 2,3,4,6- of temperature tetra--o- trimethyl silicon substrate-d- Fructus Vitis viniferae The toluene solution (9.5kg, 10l) of saccharic acid-delta-lactone, the reaction 2~2.5 of completion of dropping temperature control is little When.It is slowly added to the methanol solution (5kg, 40l) of methanesulfonic acid, after adding, be warming up to 20~30 DEG C Reaction 16~18 hours.
Reactant liquor is transferred in 300l reactor, add 50l 8% sodium bicarbonate aqueous solution and 50l ethyl acetate, collects organic faciess, and aqueous phase extracts twice (40l × 2) with ethyl acetate again, Merge organic faciess.Organic faciess are successively using 50l purification water washing, 50l 20% aqueous sodium chloride Liquid wash, organic faciess anhydrous sodium sulfate drying, filter, filtrate reduced in volume to about 20l, plus Enter the stirring of 8l toluene, be slowly added in 200l normal heptane, rejection filter after stirring 0.5~1 hour, Collection solid obtains title compound and directly throws next step.
Embodiment 3: methyl -2,3,4,6- four-o- acetyl group -1-c- (the chloro- 3- of 4- { 4- [(3s)-tetrahydrochysene furan Mutter -3- base epoxide] benzyl } phenyl)-d- pyranglucoside
Add embodiment 2 gained compound and 50l dichloromethane in 100l reactor, stir Mix dissolving, reactant liquor is cooled to after -5~5 DEG C and sequentially adds 7.5l pyridine, 8.7l acetic anhydride With 50g DMAP.Reactant liquor is transferred in 200l reactor, temperature control 10~30 DEG C are reacted 1.5~2 hours.
Add 75l purified water in reactant liquor, point liquid, collect organic faciess, aqueous phase uses 50l again Dichloromethane extraction, merges organic faciess.Organic faciess use 1mol/l salt acid elution successively (50l × 2), 8% sodium bicarbonate aqueous solution washing (50l × 1), 20% sodium chloride solution washing (50l × 2), collect organic faciess and use anhydrous sodium sulfate drying, filter, filtrate reduced in volume is extremely Do to obtain title compound 4.7kg, molar yield 62.6% is (with (s) -3- (4- (5- iodo- 2- chlorobenzyl) Phenoxy group) oxolane) calculate, two step molar yields).
Embodiment 4:2,3,4,6- tetra--o- acetyl group -1-c- (the chloro- 3- of 4- { 4- [(3s)-oxolane -3- Base epoxide] benzyl } phenyl)-β-d- Glucopyranose.
Add embodiment 3 gained compound, 18l acetonitrile and 130g pure in 50l reactor Change water, stirring and dissolving, reactant liquor be cooled to 0~10 DEG C, add 2.68kg triethyl silicane, 0~10 DEG C of Deca 4.1kg boron trifluoride diethyl etherate of temperature control, 0~10 DEG C of reaction of completion of dropping temperature control 1~1.5 hour, reactant liquor was warming up to 20~30 DEG C again and continues stirring reaction 18~20 hours.
Reactant liquor is transferred in 200l reactor, add 20l 8% sodium bicarbonate aqueous solution and 60l ethyl acetate, stirs 5~10 minutes, point liquid, and aqueous phase uses 60l ethyl acetate to extract again, Merge organic faciess and use 30l 8% sodium bicarbonate aqueous solution and 30l 20% aqueous sodium chloride successively Liquid washs, and collects organic faciess and uses anhydrous sodium sulfate drying, filters, and filtrate reduced in volume is extremely dry.
By concentrate with, after 100l dehydrated alcohol heating for dissolving, continuing to stir after being cooled to 0~10 DEG C Mix 2.5~3 hours, rejection filter;Filter cake again recrystallization twice, the vacuum drying 36 of 60 DEG C of filter cake is little When obtain title compound 2.5kg, molar yield 40.3%.
Embodiment 5:(1s) -1,5- dehydration -1- (the chloro- 3- of 4- { 4- [(3s)-oxolane -3- base epoxide] Benzyl } phenyl)-d- glucitol
12l oxolane, 18l absolute methanol, 6l purified water is added in 50l reactor With embodiment 4 gained compound, stirring is lower to add a hydronium(ion) lithium oxide 195g, and temperature control 10~ 40 DEG C are reacted 2.5~3 hours.It is evaporated to dry, residue is dissolved in 50l ethyl acetate, Washed with 10l purified water and 10l 20% sodium-chloride water solution successively, collect organic faciess and with no Aqueous sodium persulfate is dried, and filters, and filtrate reduced in volume is extremely dry.
Residue 18l methylene chloride/methanol mixed solvent heating for dissolving (5/1, v/v), plus Enter dichloromethane 75l, be stirred at room temperature 2 hours, filter, 50 DEG C of vacuum drying 12 of filter cake are little When obtain title compound 1.25kg, molar yield 68.8%, hplc purity 99.8%.
1h nmr(500mhz,dmso-d6): δ=1.90-1.95 (m, 1h), 2.14-2.21 (m, 1h),3.09-3.32(m,4h),3.43-3.48(m,1h),3.69-3.75(m,3h),3.78-3.87 (m,2h),3.94-4.02(m,3h),4.42(t,1h),4.80-4.81(d,1h),4.91-4.96(m, 3h), 6.81-6.83 (d, j=8.7hz, 2h), 7.10-7.11 (d, j=8.6hz, 2h), 7.22-7.25 (dd,j1=1.9hz, j2=8.3hz, 1h), 7.33-7.34 (d, j=1.8hz, 1h), 7.36-7.37 (d, j=8.2hz, 1h).
13c nmr(125mhz,dmso-d6): δ=32.4,37.6,61.3,66.3,70.3, 72.2,74.7,76.9,78.3,80.6,81.1,115.2,127.3,128.6,129.6, 130.8,131.5,131.9,137.7,139.6,155.5.
Ir (kbr): 3427,3255,3038,2931,2869,1613,1580,1510, 1437,1350,1279,1241,1063,843,798.
ms(m/z):473.1339[m+na]+.

Claims (20)

1. the net preparation method of Yi Palie,
It is characterized in that, using formula (i) compound be hydrolyzed reaction remove protection group be obtained,
Wherein r1Represent (c1-4- alkyl) carbonyl.
2. the net preparation method of Yi Palie according to claim 1 it is characterised in that The described method removing protection group is at a temperature of between 0 to 100 DEG C, exists in acid or alkali Under conditions of remove.
3. the net preparation method of Yi Palie according to claim 2 it is characterised in that Described acid is selected from alkali metal hydroxide selected from trifluoroacetic acid, hydrochloric acid or sulphuric acid, described alkali.
4. the net preparation method of Yi Palie according to claim 3 it is characterised in that Described alkali metal hydroxide is selected from sodium hydroxide, Lithium hydrate or potassium hydroxide.
5. the net preparation method of Yi Palie according to claim 1 it is characterised in that Formula (i) compound is prepared by reducing formula (ii) compound,
Wherein r1Represent (c1-4- alkyl) carbonyl;And r2Represent c1-6- alkyl.
6. the net preparation method of Yi Palie according to claim 5 it is characterised in that The method of described formula (ii) compound reduction is in the presence of lewis acid and reaction dissolvent, leads to Cross reducing agent to be reduced.
7. the net preparation method of Yi Palie according to claim 6 it is characterised in that Described lewis acid is selected from boron trifluoride diethyl etherate and/or aluminum chloride.
8. the net preparation method of Yi Palie according to claim 6 it is characterised in that It is molten that described reaction dissolvent is selected from acetonitrile, acetonitrile/toluene Mixed Solvent or acetonitrile/dichloromethane mixing Agent.
9. the net preparation method of Yi Palie according to claim 6 it is characterised in that Described reaction is carried out at 0~50 DEG C of temperature.
10. the net preparation method of Yi Palie according to claim 6 it is characterised in that Described reducing agent is selected from silane derivative, preferably trialkylsilane, more preferably triethyl silicane.
The net preparation method of 11. Yi Palie according to claim 5 it is characterised in that Formula (ii) compound is by formula (iii) compound is carried out acylation reaction, with acylated examination Agent protection prepares,
The net preparation method of 12. Yi Palie according to claim 11 it is characterised in that Described acylation reaction is carried out in the basic conditions.
The net preparation method of 13. Yi Palie according to claim 12 it is characterised in that Described alkali is selected from triethylamine, trimethylamine, n, n- diisopropylethylamine, pyridine and 4- dimethylamino Pyridine.
The net preparation method of 14. Yi Palie according to claim 11 it is characterised in that Formula (iii) compound is to be prepared into its organo-metallic compound (v) by formula (iv) compound, Again by metallic compound (v) and formula (vi) compound or derivatives thereof generation additive reaction,
Wherein x represents br or i;
Wherein m represents li or mg;
Wherein r3Represent three-(c1-3- alkyl) silicyl;
Subsequently by this adduct of gained after additive reaction and alcohol r2Oh reacts in presence of an acid, its Middle r2Represent c1-6- alkyl.
The net preparation method of 15. Yi Palie according to claim 14 it is characterised in that The temperature of described additive reaction between -100 to 40 DEG C, more preferably between -80 to -10 DEG C.
The net preparation method of 16. Yi Palie according to claim 14 it is characterised in that In atent solvent or its mixture by formula (v) compound be added to formula (vi) compound or In its derivant.
The net preparation method of 17. Yi Palie according to claim 14 it is characterised in that Described acid is selected from mineral acid, organic acid or lewis acid.
The net preparation method of 18. Yi Palie according to claim 17 it is characterised in that Described mineral acid is selected from hydrochloric acid or sulphuric acid;Described organic acid is selected from formic acid, acetic acid, trifluoroacetic acid Or methanesulfonic acid;Described lewis acid is selected from boron trifluoride or aluminum chloride.
The net preparation method of 19. Yi Palie according to claim 17 it is characterised in that Described alcohol is selected from methanol, ethanol or normal propyl alcohol.
The net preparation method of 20. Yi Palie according to any one in claim 1~19, It is characterized in that, described preparation method goes for scale up test or industrial mass production.
CN201510413692.7A 2015-07-14 2015-07-14 Industrial preparation method for empagliflozin Pending CN106336403A (en)

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Cited By (7)

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CN107163033A (en) * 2017-06-15 2017-09-15 扬子江药业集团北京海燕药业有限公司 A kind of preparation method net high-purity Yi Palie
CN107556302A (en) * 2017-11-02 2018-01-09 中国医药集团总公司四川抗菌素工业研究所 It is a kind of to prepare the net methods of Yi Palie
CN109988161A (en) * 2017-12-29 2019-07-09 徐州万邦金桥制药有限公司 A kind of preparation method that suitable industrialized production En Gelie is net
CN111253380A (en) * 2018-12-03 2020-06-09 江苏豪森药业集团有限公司 Preparation method of glucopyranosyl-substituted benzyl benzene derivative and intermediate thereof
CN112194655A (en) * 2020-10-15 2021-01-08 通化东宝药业股份有限公司 Preparation method of empagliflozin intermediate
CN112574186A (en) * 2020-12-22 2021-03-30 山东永丞制药有限公司 Refining method of engagliflozin
EP3621974A4 (en) * 2017-05-09 2021-04-07 Piramal Pharma Limited PROCESS FOR MANUFACTURING SGLT2 INHIBITORS AND INTERMEDIATE PRODUCTS THEREOF

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3621974A4 (en) * 2017-05-09 2021-04-07 Piramal Pharma Limited PROCESS FOR MANUFACTURING SGLT2 INHIBITORS AND INTERMEDIATE PRODUCTS THEREOF
CN107163033A (en) * 2017-06-15 2017-09-15 扬子江药业集团北京海燕药业有限公司 A kind of preparation method net high-purity Yi Palie
CN107556302A (en) * 2017-11-02 2018-01-09 中国医药集团总公司四川抗菌素工业研究所 It is a kind of to prepare the net methods of Yi Palie
CN107556302B (en) * 2017-11-02 2019-12-13 中国医药集团总公司四川抗菌素工业研究所 A kind of method for preparing empagliflozin
CN109988161A (en) * 2017-12-29 2019-07-09 徐州万邦金桥制药有限公司 A kind of preparation method that suitable industrialized production En Gelie is net
CN111253380A (en) * 2018-12-03 2020-06-09 江苏豪森药业集团有限公司 Preparation method of glucopyranosyl-substituted benzyl benzene derivative and intermediate thereof
CN112194655A (en) * 2020-10-15 2021-01-08 通化东宝药业股份有限公司 Preparation method of empagliflozin intermediate
CN112194655B (en) * 2020-10-15 2022-08-09 通化东宝药业股份有限公司 Preparation method of engelizin
CN112574186A (en) * 2020-12-22 2021-03-30 山东永丞制药有限公司 Refining method of engagliflozin

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