WO2022211052A1 - 歩行障害治療剤 - Google Patents
歩行障害治療剤 Download PDFInfo
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- WO2022211052A1 WO2022211052A1 PCT/JP2022/016648 JP2022016648W WO2022211052A1 WO 2022211052 A1 WO2022211052 A1 WO 2022211052A1 JP 2022016648 W JP2022016648 W JP 2022016648W WO 2022211052 A1 WO2022211052 A1 WO 2022211052A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
- A61K31/4965—Non-condensed pyrazines
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
Definitions
- heterocyclic derivative (1) a heterocyclic derivative represented by the following general formula (1) (hereinafter referred to as “heterocyclic derivative (1)”) or a pharmaceutically acceptable salt thereof as an active ingredient.
- the present invention relates to a therapeutic agent for gait disturbance in patients with disease.
- R 1 and R 2 are the same or different and each represents a halogen atom, alkyl, haloalkyl, arylalkyl, alkoxy, alkylthio, alkoxyalkyl, alkylsulfonyl, hydroxy, amino, monoalkylamino, dialkylamino, carboxy , aryl optionally substituted with 1 to 3 substituents selected from the group consisting of cyano and nitro; R 3 and R 4 are the same or different and represent a hydrogen atom or alkyl; R 5 represents a hydrogen atom, an alkyl or a halogen atom; Y represents N or N ⁇ O; A represents NR 6 , R 6 represents a hydrogen atom, alkyl, alkenyl or cycloalkyl; D represents an alkylene or alkenylene optionally substituted with hydroxy, or A and D together represent a divalent group represented by the following formula (2);
- u represents an integer of 0 to 2, and v represents 0 or 1.
- G represents O, S, SO or SO2 ;
- Q represents carboxy, alkoxycarbonyl, tetrazolyl, carbamoyl, monoalkylcarbamoyl, dialkylcarbamoyl or a group represented by the following formula (4).
- R 7 is amino, monoalkylamino, dialkylamino, or hydroxy, or a halogen atom, alkyl, haloalkyl, arylalkyl, alkoxy, alkylthio, alkoxyalkyl, alkylsulfonyl, hydroxy, amino, monoalkyl represents any of the following groups 1) to 4) optionally substituted with 1 to 3 substituents selected from the group consisting of amino, dialkylamino, carboxy, cyano and nitro; 1) alkyl, 2) aryl, 3) aryloxy, 4) heterocyclic groups; ]
- Gait disturbance is a disorder caused by neurological and ischemic diseases, and significantly reduces the patient's QOL. Patients with ischemic diseases are prone to thrombus formation due to decreased blood flow. In particular, insufficient blood flow in the legs causes symptoms such as coldness, numbness, and pain.
- Cilostazol a PDE3 inhibitor
- Cilostazol a PDE3 inhibitor
- Non-Patent Document 2 Beraprost sodium, a prostaglandin I2 derivative, has been approved in Japan as a drug used to improve ulcers, pain and cold sensation associated with chronic arterial occlusive disease.
- the present heterocyclic derivative (1) or a pharmaceutically acceptable salt thereof is useful as a prostaglandin I2 receptor agonist for the treatment of ischemic diseases such as pulmonary hypertension and chronic arterial occlusive disease.
- ischemic diseases such as pulmonary hypertension and chronic arterial occlusive disease.
- Patent Document 1 the present heterocyclic derivative (1) or a pharmaceutically acceptable salt thereof improves coldness, numbness, and pain in patients with ischemic disease, and further improves gait disturbance in patients with ischemic disease. have not been reported to do.
- Cilostazol package insert Beraprost sodium package insert
- the problem to be solved by the present invention is to provide a novel therapeutic agent for gait disturbance in patients with ischemic disease.
- the present inventors have completed the present invention by finding that the present heterocyclic derivative (1) exhibits an antithrombotic effect and can ameliorate ischemia-induced gait disturbance in rats.
- One aspect of the present invention includes, for example, a therapeutic agent for gait disturbance in patients with ischemic disease, containing the present heterocyclic derivative (1) or a pharmaceutically acceptable salt thereof as an active ingredient.
- the present invention can provide a therapeutic agent for gait disturbance in patients with ischemic disease that can be used safely.
- FIG. 1 shows 2- ⁇ 4-[N-(5,6-diphenylpyrazin-2-yl)-N-isopropylamino]butyloxy ⁇ -N-(methylsulfonyl)acetamide (hereinafter , referred to as “compound A”).
- the vertical axis represents walking distance (m), and the horizontal axis represents postoperative days (days).
- the circle indicates the sham operation group, the square indicates the control group, and the triangle indicates the compound A-administered group.
- R 1 and R 2 are the same or different and are phenyl optionally substituted with 1 to 3 substituents selected from the group consisting of halogen atoms, alkyl and alkoxy;
- R 3 and R 4 are the same or different and are a hydrogen atom or alkyl;
- R5 is a hydrogen atom, Y is N, A is NR 6 and R 6 is alkyl;
- D is alkylene;
- E is a single bond, G is O, Q is carboxy or a group represented by formula (4),
- R 7 is amino, monoalkylamino, dialkylamino, or hydroxy, or a halogen atom, alkyl, haloalkyl, arylalkyl, alkoxy, alkylthio, alkoxyalkyl , alkylsulfonyl, hydroxy, amino, monoalkylamino, dialkylamino, carboxy, cyano and any of the following 1) to 4) optionally substituted
- compound A 2- ⁇ 4-[N-(5,6-diphenylpyrazin-2-yl)-N-isopropylamino]butyloxy ⁇ acetic acid (hereinafter referred to as "compound B”) are preferable.
- alkyl in the present invention is a linear or branched one having 1 to 6 carbon atoms, such as methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert- Mention may be made of butyl, n-pentyl, isopentyl, n-hexyl, isohexyl. Among them, those having 1 to 4 carbon atoms are preferred.
- Alkoxy in the present invention includes straight-chain or branched-chain ones having 1 to 6 carbon atoms, such as methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, sec-butoxy, tert. -butoxy, n-pentyloxy, isopentyloxy, n-hexyloxy, isohexyloxy. Among them, those having 1 to 4 carbon atoms are preferred.
- alkoxy moiety of "alkoxycarbonyl” and “alkoxyalkyl” in the present invention the same alkoxy described above can be mentioned.
- alkenyl in the present invention includes linear or branched ones having 2 to 6 carbon atoms, such as vinyl, 1-propenyl, 2-propenyl, 1-butenyl, 2-butenyl, 3-butenyl, Mention may be made of 1-pentenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 4-methyl-3-pentenyl, 1-hexenyl, 2-hexenyl, 3-hexenyl, 4-hexenyl and 5-hexenyl. Among others, those having 3 or 4 carbon atoms are preferred.
- Cycloalkyl in the present invention includes those having 3 to 8 carbon atoms, such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl and cyclooctyl. Among them, those having 5 to 7 carbon atoms are preferred.
- halogen atom in the present invention includes, for example, a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- Aryl in the present invention includes those having 6 to 10 carbon atoms, such as phenyl, 1-naphthyl, and 2-naphthyl. Phenyl is particularly preferred.
- arylalkyl As the aryl moiety of "arylalkyl” and “aryloxy” in the present invention, the same aryl as described above can be mentioned.
- Alkylene in the present invention is a linear or branched one having 1 to 8 carbon atoms, such as methylene, ethylene, 1-methylethylene, 2-methylethylene, trimethylene, tetramethylene, pentamethylene, Mention may be made of hexamethylene, heptamethylene, octamethylene. Among them, those having 3 to 6 carbon atoms are preferred, and those having 4 carbon atoms are particularly preferred.
- alkenylene in the present invention includes linear or branched ones having 2 to 8 carbon atoms, such as ethenylene, 1-propenylene, 2-propenylene, 1-butenylene, 2-butenylene, 3-butenylene, 1-pentenylene, 2-pentenylene, 3-pentenylene, 4-pentenylene, 4-methyl-3-pentenylene, 1-hexenylene, 2-hexenylene, 3-hexenylene, 4-hexenylene, 5-hexenylene, 1-heptenylene, 2- Heptenylene, 3-heptenylene, 4-heptenylene, 5-heptenylene, 6-heptenylene, 1-octenylene, 2-octenylene, 3-octenylene, 4-octenylene, 5-octenylene, 6-octenylene, 7-octenylene can be mentioned. . Among them, those having 3 to 6 carbon atoms are preferred, and those having 4 carbon atoms, 5-
- heterocyclic group in the present invention includes the following (1) or (2).
- nitrogen and sulfur atoms may form oxides.
- a 4- to 8-membered saturated ring group, or a benzene-fused ring group thereof which may contain 1 to 4 identical or different nitrogen atoms, oxygen atoms or sulfur atoms as ring-constituting atoms; and when the ring-constituting atoms are nitrogen or sulfur atoms, the nitrogen or sulfur atoms may form an oxide.
- Examples include piperidino, piperazinyl, 3-methylpiperazin-1-yl, homopiperazinyl, monophorino, thiomonophorino, 1-pyrrolidinyl, 2-pyrrolidinyl and 2-tetrahydrofuranyl.
- This heterocyclic derivative (1) can be synthesized by the method described in Patent Document 1 (International Publication No. 02/088084 pamphlet).
- the present heterocyclic derivative (1) can be used as a medicine as a free base or acid, but can also be used in the form of a medically acceptable salt by a known method.
- salts of inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, hydrofluoric acid, or hydrobromic acid, or acetic acid
- organic acids such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, hydrofluoric acid, or hydrobromic acid
- salts of organic acids of tartaric acid lactic acid, citric acid, fumaric acid, maleic acid, succinic acid, methanesulfonic acid, ethanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid, naphthalenesulfonic acid, or camphorsulfonic acid can be done.
- Examples of the “salt" when the present heterocyclic derivative (1) exhibits acidity include alkali metal salts such as sodium salts and potassium salts, and alkaline earth metal salts such as calcium salts.
- the present heterocyclic derivative (1) has geometric isomers (Z-isomer and E-isomer), and each geometric isomer and mixtures thereof are also included in the present heterocyclic derivative (1).
- the present heterocyclic derivative (1) includes those having an asymmetric carbon, and the respective optical isomers and their racemates are also included in the present heterocyclic derivative (1).
- Optical isomers are obtained by using optically active acids (e.g., tartaric acid, dibenzoyltartaric acid, mandelic acid, 10-camphorsulfonic acid) from the racemate obtained as described above, using its basicity, It can be produced by optical resolution by a known method, or by using an optically active compound prepared in advance as a raw material.
- the therapeutic agent for walking disorders according to the present invention can be used, for example, to improve the walking distance and walking time of patients.
- improvements in patient walking distance and walking time include, for example, improvement in maximum and/or painless walking time and/or distance.
- the patient is, for example, a patient with an ischemic disease, preferably a patient with peripheral arterial disease, more preferably a patient with chronic arterial occlusive disease or arteriosclerosis obliterans, more preferably an occlusive disease.
- ischemic disease preferably a patient with peripheral arterial disease, more preferably a patient with chronic arterial occlusive disease or arteriosclerosis obliterans, more preferably an occlusive disease.
- arteriosclerosis obliterans
- a patient with an ischemic disease is, for example, a patient classified into at least one selected from Fontaine classifications I to IV, preferably a patient classified into Fontaine classification II or higher, Patients classified into Fontaine II are preferred.
- a patient with an ischemic disease has a resting ABI (ankle brachial index) of, for example, 0.99 or less, preferably 0.90 or less.
- ABI ankle brachial index
- the therapeutic agent for gait disorder according to the present invention contains the heterocyclic derivative (1) as it is or in a pharmaceutically acceptable non-toxic and inert carrier in the range of 0.01 to 99.5%, Preferably, it can be contained within the range of 0.5 to 90%.
- Examples of the carrier include solid, semi-solid, or liquid diluents, fillers, and other formulation aids. 1 type, or 2 or more types can be used for these.
- the therapeutic agents for gait disorders according to the present invention are solid or liquid dose units, powders, capsules, tablets, dragees, granules, powders, suspensions, liquids, syrups, elixirs, lozenges, and the like. It can take any form of oral administration formulation, injection, parenteral administration formulation such as suppository. It may be a sustained release formulation. Among them, orally administered preparations such as tablets are particularly preferred.
- a powder can be produced by appropriately pulverizing the present heterocyclic derivative (1).
- a powder can be produced by pulverizing the present heterocyclic derivative (1) into an appropriate fineness and then mixing with a similarly finely pulverized pharmaceutical carrier, for example, an edible carbohydrate such as starch or mannitol.
- a similarly finely pulverized pharmaceutical carrier for example, an edible carbohydrate such as starch or mannitol.
- flavoring agents, preservatives, dispersing agents, coloring agents, perfumes and the like can be added.
- Capsules are manufactured by first filling powders and powders that have been powdered as described above, or granulated as described in the section on tablets, into capsule shells such as gelatin capsules, for example. can do. By mixing a lubricant or glidant such as colloidal silica, talc, magnesium stearate, calcium stearate, or solid polyethylene glycol with a powdered powder or powder, followed by a filling operation. can also be manufactured.
- a lubricant or glidant such as colloidal silica, talc, magnesium stearate, calcium stearate, or solid polyethylene glycol
- a fine powder of the present heterocyclic derivative (1) may be suspended and dispersed in vegetable oil, polyethylene glycol, glycerin, and a surfactant, and wrapped with a gelatin sheet to form a soft capsule.
- Tablets are manufactured by adding excipients to the powdered heterocyclic derivative (1) to form a powder mixture, granulating or slugging, then adding a disintegrant or lubricant, and then pressing into tablets. can do.
- a powder mixture can be produced by mixing the appropriately powdered heterocyclic derivative (1) with a diluent or base.
- a diluent or base e.g. sodium carboxymethylcellulose, methylcellulose, hydroxypropylmethylcellulose, gelatin, polyvinylpyrrolidone, polyvinyl alcohol), dissolution retarding agents (e.g. paraffin), resorbing agents (e.g. quaternary salts), Adsorbents (eg bentonite, kaolin) and the like can be added.
- binders e.g. sodium carboxymethylcellulose, methylcellulose, hydroxypropylmethylcellulose, gelatin, polyvinylpyrrolidone, polyvinyl alcohol
- dissolution retarding agents e.g. paraffin
- resorbing agents e.g. quaternary salts
- Adsorbents eg bentonite, kaolin
- the powder mixture can be first moistened with a binder such as syrup, starch paste, gum arabic, cellulose solution or polymer substance solution, stirred and mixed, dried and pulverized into granules.
- a binder such as syrup, starch paste, gum arabic, cellulose solution or polymer substance solution
- stirred and mixed dried and pulverized into granules.
- stearic acid, stearate, talc, mineral oil, etc. as a lubricant to the granules thus produced, it is possible to prevent them from adhering to each other.
- Tablets can also be produced by directly compressing after mixing the present heterocyclic derivative (1) with a fluid inert carrier without going through the granulation or slugging steps as described above. can.
- Tablets manufactured in this way can be coated with film or sugar.
- Clear or translucent protective coatings consisting of sealing coats of shellac, coatings of sugar or polymeric materials, and polish coatings consisting of waxes can also be used.
- oral formulations such as liquids, syrups, lozenges, and elixirs can also be made into dosage unit forms such that a fixed amount thereof contains a fixed amount of the present heterocyclic derivative (1).
- a syrup can be produced by dissolving the present heterocyclic derivative (1) in an appropriate flavored aqueous solution.
- Elixirs can be prepared using a non-toxic alcoholic carrier.
- a suspension can be produced by dispersing the present heterocyclic derivative (1) in a non-toxic carrier. If necessary, solubilizers, emulsifiers (e.g. ethoxylated isostearyl alcohols, polyoxyethylene sorbitol esters), preservatives, flavoring agents (e.g. peppermint oil, saccharin) and the like can be added. can.
- solubilizers e.g. ethoxylated isostearyl alcohols, polyoxyethylene sorbitol esters
- preservatives e.g. ethoxylated isostearyl alcohols, polyoxyethylene sorbitol esters
- flavoring agents e.g. peppermint oil, saccharin
- dosage unit formulations for oral administration can be microencapsulated.
- the formulations can also be coated or embedded in polymers, waxes, etc. to provide extended duration of action or sustained release.
- Parenteral formulations can take the form of liquid dosage unit forms for subcutaneous, intramuscular, or intravenous injection, such as solutions and suspensions.
- the preparation for parenteral administration is obtained by suspending or dissolving a certain amount of the heterocyclic derivative (1) in a non-toxic liquid carrier suitable for the purpose of injection, such as an aqueous or oily medium, and then suspending or dissolving the suspension. Alternatively, it can be produced by sterilizing the solution.
- a non-toxic salt or salt solution can be added to make the injection isotonic. Stabilizers, preservatives, emulsifiers and the like can also be added.
- Suppositories are prepared by adding the present heterocyclic derivative (1) to water-soluble or insoluble solids with a low melting point, such as polyethylene glycol, cocoa butter, semi-synthetic fats and oils [e.g., Witepsol (registered trademark)], higher esters ( For example, it can be produced by dissolving or suspending in palmitate myristyl ester) or a mixture thereof.
- a low melting point such as polyethylene glycol, cocoa butter, semi-synthetic fats and oils [e.g., Witepsol (registered trademark)], higher esters ( For example, it can be produced by dissolving or suspending in palmitate myristyl ester) or a mixture thereof.
- the dosage of the therapeutic agent for gait disorders according to the present invention varies depending on the patient's condition such as body weight and age, the route of administration, the severity of symptoms, etc., but in general, the heterocyclic derivative (1) is suitably in the range of 0.001 mg to 100 mg per day, more preferably in the range of 0.01 mg to 10 mg. Depending on the case, less than this dose may be sufficient, and conversely, more than this dose may be required. In addition, it can be administered once to several times a day or at intervals of one to several days.
- 0.1 mg or 0.2 mg of the present heterocyclic derivative (1) can be started by oral administration twice a day after meals.
- the maintenance dose can be determined by increasing the dose by 0.2 mg as a single dose at intervals of , up to the maximum tolerated dose.
- the maximum dose is, for example, 0.8 mg to 1.6 mg, and any dose can be administered orally twice daily after meals.
- Test Example 1 Antithrombotic action in rat FeCl 3 -induced thrombus model (1) Method for preparing medium Methylcellulose (Metolose, SM-400, Shin-Etsu Chemical Co., Ltd.) was dissolved in distilled water, and a 0.5 w/v% methylcellulose aqueous solution was prepared. prepared.
- Test method Urethane (Wako Pure Chemical Industries) was dissolved in physiological saline (Otsuka Pharmaceutical Factory) to prepare 0.3 g/mL.
- physiological saline (Otsuka Pharmaceutical Factory) was subcutaneously administered to rats at 4 mL per 1 kg of body weight (1.2 g/kg) to anesthetize them. When the effect of anesthesia was insufficient, the dose was appropriately increased by about 10% of the initial dose.
- Male Wistar rats aged 9 to 10 weeks were used as rats.
- the abdomen of the rat was incised to expose the duodenum, and drugs were injected 2-3 mm downstream from the vicinity of the gastric-duodenal boundary using a 26G injection needle and syringe, compound A and beraprost sodium at 1 mL/kg, and cilostazol at 2 mL/kg. A dose of kg was administered.
- a skin incision was made on the rat's right thigh, the femoral artery was exposed, and the vein and nerve were separated. Parafilm was placed under the dissected femoral artery to completely separate the femoral artery, vein and nerve.
- a laser Doppler blood flowmeter (ALF21, Advance) probe was placed on the femoral artery to initiate measurement of blood flow (mL/min/g).
- a biometric data processing system FLO-WB, Omega Wave Co., Ltd. was used to record changes in blood flow.
- Test Example 2 Gait improvement in rat ischemic gait disorder model (1) Test method Wistar rats (male, 7 weeks old) (manufactured by Charles River Laboratories Japan) were treated with a treadmill (MK-680, Muromachi Kikai Co., Ltd.). 6, 5, and 4 days before the operation, walking training was performed continuously for 3 days. On the day before surgery, the pre-value of the walking distance was measured, the animals were divided into groups, and sham surgery or iliac artery ligation surgery described in i) below was performed.
- the sham operation group and control group received 0.5 w/v% aqueous methylcellulose solution
- the drug-administered group received 0.6 mg/mL compound A suspension (vehicle: 0.5 w/v%
- compound A 3 mg/kg was orally administered twice a day for 9 days using an aqueous methylcellulose solution).
- Walking time was measured 3 days, 7 days, and 10 days after surgery. Based on the measured walking time, the walking distance was calculated.
- both common iliac arteries were similarly exposed, sutured, but not ligated, and the abdomen was closed after the suture was removed.
- the ligation of the iliac artery was performed by the data manager and this information was not disclosed to the gait tester until the study was completed.
- control group was compared with the sham operation group by t-test or Welch It was evaluated by test (##: p ⁇ 0.01).
- drug-administered group was evaluated by t-test against the control group (**: p ⁇ 0.01).
- Test Example 3 Improvement of gait disturbance in patients with arteriosclerosis obliterans
- Japanese patients with arteriosclerosis obliterans selected by resting ABI etc. were given placebo or 0.1 to 1.6 mg of selexipag was administered twice daily for 24 to 36 weeks (dose titration period: 8 to 20 weeks, dose maintenance period: 16 weeks).
- the improvement of the patient's walking disorder was confirmed using a treadmill, such as the maximum walking time (Gartner method).
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Abstract
Description
R3、R4は、同一又は異なって、水素原子又はアルキルを表し;
R5は水素原子、アルキル又はハロゲン原子を表し;
YはN又はN→Oを表し;
AはNR6を表し、R6は水素原子、アルキル、アルケニル又はシクロアルキルを表し;
Dはヒドロキシで置換されていてもよいアルキレン又はアルケニレンを表すか、又はAとDとが一緒になって、次の式(2)で表される二価の基を表し;
Eは、フェニレン又は単結合を表すか、又はDとEとが一緒になって、次の式(3)で表される二価の基を表し;
Gは、O、S、SO又はSO2を表し;
Qは、カルボキシ、アルコキシカルボニル、テトラゾリル、カルバモイル、モノアルキルカルバモイル、ジアルキルカルバモイル又は次の式(4)で表される基を表す。
1)アルキル、
2)アリール、
3)アリールオキシ、
4)複素環基。]
R1、R2が、同一又は異なって、ハロゲン原子、アルキル及びアルコキシからなる群から選ばれる1~3個の置換基で置換されていてもよいフェニルであり、
R3、R4が、同一又は異なって、水素原子又はアルキルであり、
R5が水素原子であり、
YがNであり、
AがNR6であり、R6がアルキルであり、
Dがアルキレンであり、
Eが単結合であり、
GがOであり、
Qが、カルボキシ又は式(4)で表される基であり、R7が、アミノ、モノアルキルアミノ、ジアルキルアミノ、若しくはヒドロキシ、又はハロゲン原子、アルキル、ハロアルキル、アリールアルキル、アルコキシ、アルキルチオ、アルコキシアルキル、アルキルスルホニル、ヒドロキシ、アミノ、モノアルキルアミノ、ジアルキルアミノ、カルボキシ、シアノ及びニトロからなる群から選ばれる1~3個の置換基で置換されていてもよい下記1)~4)のいずれかの基である化合物が好ましい。
2)アリール、
3)アリールオキシ、
4)複素環基。
(2)環構成原子として、窒素原子、酸素原子又は硫黄原子を、同一又は異なって、1~4個含んでいてもよい、4~8員環の飽和環基、又はそれらのベンゼン縮合環基であって、環構成原子が窒素原子又は硫黄原子の場合、かかる窒素原子、硫黄原子はオキシドを形成していてもよい。例えば、ピペリジノ、ピペラジニル、3-メチルピペラジン-1-イル、ホモピペラジニル、モノホリノ、チオモノホリノ、1-ピロリジニル、2-ピロリジニル、2-テトラヒドロフラニルを挙げることができる。
(1)媒体の調製方法
メチルセルロース(メトローズ、SM-400、信越化学工業)を蒸留水に溶解して、0.5w/v%メチルセルロース水溶液を調製した。
(a)2-{4-[N-(5,6-ジフェニルピラジン-2-イル)-N-イソプロピルアミノ]ブチルオキシ}-N-(メチルスルホニル)アセトアミド(化合物A)
化合物Aに0.5w/v%メチルセルロース水溶液を加えて、0.5w/v%メチルセルロース水溶液中の化合物A:10mg/mL懸濁液を調製した。
(b)ベラプロストナトリウム
ベラプロストナトリウムに0.5w/v%メチルセルロース水溶液を加えて、0.5w/v%メチルセルロース水溶液中のベラプロストナトリウム:1.0mg/mL水溶液を調製した。
(c)シロスタゾール
シロスタゾールに0.5w/v%メチルセルロース水溶液を加えて、シロスタゾール:150または50mg/mL懸濁液を調製した。
ウレタン(和光純薬)を生理食塩水(大塚製薬工場)に溶解して0.3g/mLに調製した。ウレタン生理食塩水溶液をラットの皮下に体重1kg当たり4mL(1.2g/kg)投与し、麻酔した。麻酔の効果が不十分な場合、初期の投与量の約10%を単位に適宜増量した。ラットは9~10週齢の雄性Wistarラットを使用した。
媒体を投与した対照群では血栓形成惹起後平均約12~15分で血管が閉塞した。一方、化合物Aの10mg/kg投与群では惹起60分前の投与により血管閉塞時間を約22分に有意に延長した。ベラプロストナトリウムの1mg/kg投与群では惹起30分前の投与により、閉塞時間を約43分に有意に延長した。なお、ベラプロストナトリウムの0.3mg/kg投与群では、閉塞時間を延長せず、更に長時間に渡って血圧の低下(25%)が観察された。シロスタゾールは両用量とも閉塞時間を延長しなかった。
(1)試験方法
Wistar系ラット(雄性、7週齢)(日本チャールス・リバー社製)に対して、トレッドミル(MK-680、室町機械社製)を用いて、歩行トレーニングを手術実施の6日前、5日前、4日前に3日間連続して行った。手術前日に歩行距離の前値を測定、動物を群分けし、偽手術又は下記i)に記載の腸骨動脈結紮手術を行った。
ラットに50mg/kgのペントバルビタールナトリウム(ソムノペンチル(登録商標)、Schering-Plough Animal Health)を腹腔内投与し麻酔した。麻酔が足りない場合は、ソムノペンチル(登録商標)を0.02~0.03mL(ペントバルビタールナトリウム量:1.3~1.9mg)ずつ追加投与した。麻酔下に腹部を正中線に沿って切開し、左右の総腸骨動脈を露出させた。両側の総腸骨動脈に縫合糸(ネスコスチャー シルクブレード4号、アルフレッサ ファーマ)を掛け、その中枢側をライゲーションクリップ(Weck Hemoclip、small、Teleflex Medical)を用いてそれぞれ一箇所ずつ結紮した。さらに縫合糸で左右の腸骨動脈を一箇所ずつ結紮した。結紮後に正中開腹した部分の腹膜及び筋層を縫合糸を用いて縫合し、皮膚を縫合した。縫合部にはテラマイシン軟膏(oxytetracycline hydrochloride及びpolymyxin B sulfateを含有、ファイザー)を適量塗布し、注射用ビクシリン(登録商標)S(アンピシリンナトリウム50mg力価、クロキサシリンナトリウム50mg力価、明治製菓)を1mLの生理食塩水(大塚生食注、大塚製薬工場)に溶解し、このうちの0.1mLを大腿部に筋肉注射した。偽手術群については同様に両総腸骨動脈を露出し、縫合糸を掛け、結紮は行わず、縫合糸を取り除いた後に閉腹した。腸骨動脈の結紮はデータ管理担当者が行い、その情報は試験が終了するまで歩行試験担当者には開示しなかった。
トレッドミルのベルトの速度を15m/minから3分間単位で35m/minまで5m/minずつ段階的に速度を上げ、ラットがベルト後端の電気刺激板に乗った時間を脱落時間として記録し、5回脱落するまでの時間を歩行時間とした。歩行試験は歩行試験担当者2名が行い、トレッドミルの始動と同時に5本のレーン毎に設けたストップウォッチ(S058、セイコーエスヤード)のスタートボタンを押し、脱落時間をスプリットタイムとして記録した。そして測定後に脱落時間を歩行試験記録書に記載した。測定はいずれの群かが歩行試験担当者に分からないよう、ブラインド下で行った。
ラットをトレッドミルでの歩行に馴化させるために、手術実施の6日前、5日前、4日前に歩行トレーニングを行い、この間にトレッドミルでの歩行に適性のある個体を選別した。歩行訓練時に歩行を拒む個体や、頻繁に脱落もしくは反転する個体などは、トレッドミルでの歩行試験に適性がない個体として使用対象から除外した。
図1に示すように、化合物Aを投与することにより、腸骨動脈を結紮することで生じる虚血による歩行障害が有意に改善された。
testにより評価した(##:p<0.01)。また、薬物投与群については、対照群に対して、t-testにより評価した(**:p<0.01)。
プラセボ対照二重盲検比較試験として、日本人閉塞性動脈硬化症の患者(安静時ABIなどによって選択される)に、プラセボ又はセレキシパグ0.1~1.6mgを1日2回24~36週間(用量調節期:8~20週間、用量維持期:16週間)投与した。
Claims (7)
- 次の一般式(1)で表される複素環誘導体又はその医薬上許容される塩を有効成分として含有する、虚血性疾患を伴う患者の歩行障害の治療剤;
式(1)中、R1、R2は、同一又は異なって、ハロゲン原子、アルキル、ハロアルキル、アリールアルキル、アルコキシ、アルキルチオ、アルコキシアルキル、アルキルスルホニル、ヒドロキシ、アミノ、モノアルキルアミノ、ジアルキルアミノ、カルボキシ、シアノ及びニトロからなる群から選ばれる1~3個の置換基で置換されていてもよいアリールを表し;
R3、R4は、同一又は異なって、水素原子又はアルキルを表し;
R5は水素原子、アルキル又はハロゲン原子を表し;
YはN又はN→Oを表し;
AはNR6を表し、R6は水素原子、アルキル、アルケニル又はシクロアルキルを表し;
Dはヒドロキシで置換されていてもよいアルキレン又はアルケニレンを表すか、又はAとDとが一緒になって、次の式(2)で表される二価の基を表し;
[式(2)中、rは0~2の整数を表し、qは2又は3を表し、tは0~4の整数をそれぞれ表す。]
Eは、フェニレン又は単結合を表すか、又はDとEとが一緒になって、次の式(3)で表される二価の基を表し;
[式(3)中、uは0~2の整数を表し、vは0又は1を表す。]
Gは、O、S、SO又はSO2を表し;
Qは、カルボキシ、アルコキシカルボニル、テトラゾリル、カルバモイル、モノアルキルカルバモイル、ジアルキルカルバモイル又は次の式(4)で表される基を表す。
[式(4)中、R7は、アミノ、モノアルキルアミノ、ジアルキルアミノ、若しくはヒドロキシ、又はハロゲン原子、アルキル、ハロアルキル、アリールアルキル、アルコキシ、アルキルチオ、アルコキシアルキル、アルキルスルホニル、ヒドロキシ、アミノ、モノアルキルアミノ、ジアルキルアミノ、カルボキシ、シアノ及びニトロからなる群から選ばれる1~3個の置換基で置換されていてもよい下記1)~4)のいずれかの基を表す;
1)アルキル、
2)アリール、
3)アリールオキシ、
4)複素環基。] - 複素環誘導体(1)において、R1、R2が、同一又は異なって、ハロゲン原子、アルキル及びアルコキシからなる群から選ばれる1~3個の置換基で置換されていてもよいフェニルであり、
R3、R4が、同一又は異なって、水素原子又はアルキルであり、
R5が水素原子であり、
YがNであり、
AがNR6であり、R6がアルキルであり、
Dがアルキレンであり、
Eが単結合であり、
GがOであり、
Qが、カルボキシ又は式(4)で表される基であり、R7が、アミノ、モノアルキルアミノ、ジアルキルアミノ、若しくはヒドロキシ、又はハロゲン原子、アルキル、ハロアルキル、アリールアルキル、アルコキシ、アルキルチオ、アルコキシアルキル、アルキルスルホニル、ヒドロキシ、アミノ、モノアルキルアミノ、ジアルキルアミノ、カルボキシ、シアノ及びニトロからなる群から選ばれる1~3個の置換基で置換されていてもよい下記1)~4)のいずれかの基である、請求項1に記載の歩行障害の治療剤。
1)アルキル、
2)アリール、
3)アリールオキシ、
4)複素環基 - 虚血性疾患を伴う患者が、閉塞性動脈硬化症を伴う患者である、請求項1に記載の歩行障害の治療剤。
- 閉塞性動脈硬化症を伴う患者が、Fontaine分類I~IVから選択される少なくとも一つに分類される患者である、請求項1に記載の歩行障害の治療剤。
- 2-{4-[N-(5,6-ジフェニルピラジン-2-イル)-N-イソプロピルアミノ]ブチルオキシ}酢酸若しくは2-{4-[N-(5,6-ジフェニルピラジン-2-イル)-N-イソプロピルアミノ]ブチルオキシ}-N-(メチルスルホニル)アセトアミド、又はその医薬上許容される塩を有効成分として含有する虚血性疾患を伴う患者の歩行障害の治療剤。
- 虚血性疾患を伴う患者が、閉塞性動脈硬化症を伴う患者である、請求項5に記載の歩行障害の治療剤。
- 閉塞性動脈硬化症を伴う患者が、Fontaine分類I~IVから選択される少なくとも一つに分類される患者である、請求項5に記載の歩行障害の治療剤。
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| JP2023511724A JPWO2022211052A1 (ja) | 2021-03-31 | 2022-03-31 | |
| CA3215414A CA3215414A1 (en) | 2021-03-31 | 2022-03-31 | Therapeutic agent for gait disturbance |
| AU2022248664A AU2022248664A1 (en) | 2021-03-31 | 2022-03-31 | Therapeutic agent for gait disturbance |
| IL307277A IL307277A (en) | 2021-03-31 | 2022-03-31 | Therapeutic material for gait disorders |
| EP22781262.5A EP4316489A4 (en) | 2021-03-31 | 2022-03-31 | Therapeutic agent for gait disturbance |
| BR112023019899A BR112023019899A2 (pt) | 2021-03-31 | 2022-03-31 | Agente terapêutico para transtorno da marcha |
| US18/284,941 US20240197724A1 (en) | 2021-03-31 | 2022-03-31 | Therapeutic agent for gait disturbance |
| KR1020237034284A KR20230165247A (ko) | 2021-03-31 | 2022-03-31 | 보행 장애 치료제 |
| CN202280023976.3A CN117157075A (zh) | 2021-03-31 | 2022-03-31 | 步态障碍治疗剂 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002088084A1 (en) | 2001-04-26 | 2002-11-07 | Nippon Shinyaku Co., Ltd. | Heterocyclic compound derivatives and medicines |
| WO2009157396A1 (ja) * | 2008-06-23 | 2009-12-30 | 日本新薬株式会社 | 脊柱管狭窄症治療剤 |
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| ES2762943T3 (es) * | 2015-09-03 | 2020-05-26 | Teva Pharmaceuticals Int Gmbh | Formas de Selexipag en estado sólido |
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- 2022-03-31 CN CN202280023976.3A patent/CN117157075A/zh active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002088084A1 (en) | 2001-04-26 | 2002-11-07 | Nippon Shinyaku Co., Ltd. | Heterocyclic compound derivatives and medicines |
| WO2009157396A1 (ja) * | 2008-06-23 | 2009-12-30 | 日本新薬株式会社 | 脊柱管狭窄症治療剤 |
Non-Patent Citations (3)
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| ANONYMOUS: "Lumbar spinal canal stenosis", THE JAPANESE ORTHOPAEDIC ASSOCIATION CORPORATION, 2 September 2020 (2020-09-02), XP055971710, Retrieved from the Internet <URL:https://www.joa.or.jp/public/sick/condition/lumbar_spinal_stenosis.html> [retrieved on 20221017] * |
| See also references of EP4316489A4 |
| TETSURO MIYATA, KOHEI AKAZAWA, MASAHIRO AKISHITA ET AL. : "Guidelines for the management of peripheral occlusive arterial diseases (2015 revised edition)", 2014 JOINT RESEARCH REPORT. DIGEST EDITION, JP, JP, pages 1 - 15-36, XP009543363 * |
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| EP4316489A4 (en) | 2025-03-26 |
| US20240197724A1 (en) | 2024-06-20 |
| EP4316489A1 (en) | 2024-02-07 |
| CN117157075A (zh) | 2023-12-01 |
| IL307277A (en) | 2023-11-01 |
| CA3215414A1 (en) | 2022-10-06 |
| JPWO2022211052A1 (ja) | 2022-10-06 |
| BR112023019899A2 (pt) | 2023-11-07 |
| KR20230165247A (ko) | 2023-12-05 |
| TW202304444A (zh) | 2023-02-01 |
| AU2022248664A1 (en) | 2023-10-12 |
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