WO1994005637A1 - Optically active 1,4-dihydropyridine compound and process for producing the same - Google Patents
Optically active 1,4-dihydropyridine compound and process for producing the same Download PDFInfo
- Publication number
- WO1994005637A1 WO1994005637A1 PCT/JP1993/001222 JP9301222W WO9405637A1 WO 1994005637 A1 WO1994005637 A1 WO 1994005637A1 JP 9301222 W JP9301222 W JP 9301222W WO 9405637 A1 WO9405637 A1 WO 9405637A1
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- Prior art keywords
- group
- formula
- dimethyl
- optically active
- compound
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/80—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members
- C07D211/84—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen directly attached to ring carbon atoms
- C07D211/90—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P17/00—Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms
- C12P17/10—Nitrogen as only ring hetero atom
- C12P17/12—Nitrogen as only ring hetero atom containing a six-membered hetero ring
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P41/00—Processes using enzymes or microorganisms to separate optical isomers from a racemic mixture
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P41/00—Processes using enzymes or microorganisms to separate optical isomers from a racemic mixture
- C12P41/003—Processes using enzymes or microorganisms to separate optical isomers from a racemic mixture by ester formation, lactone formation or the inverse reactions
- C12P41/005—Processes using enzymes or microorganisms to separate optical isomers from a racemic mixture by ester formation, lactone formation or the inverse reactions by esterification of carboxylic acid groups in the enantiomers or the inverse reaction
Definitions
- the present invention relates to an intermediate for producing an optically active 1,4-dihydroxypyridine derivative which is useful as a prophylactic or therapeutic drug for ischemic heart disease or hypertension, and a method for producing the same.
- the method of Achinami et al uses a dihydroxypyridin ester derivative having a pivaloyloxymethyl group bonded to the 3rd and 5th positions of the dihydroxypyridin ring as a substrate. And enzymatic asymmetric hydrolysis of one ester to induce optically active dihydroxypyridinone monocarboxylic acid as an intermediate for the synthesis of pharmaceuticals It is guided to a conductor.
- this method requires many steps until the synthesis of the substrate and the conversion of the bivaloyloxymethyl group, etc., to other substituents, leading to compounds useful as pharmaceuticals.
- Sih et al. Is essentially the same as that of Achinami et al., Except that vivaloyl methoxymethyl ester is replaced by acetoximetyl ester.
- the present inventors have conducted intensive studies in order to solve the above-mentioned problems, and as a result, by using microorganisms, (4R) _1, 4—dihydroxypyridine_3, The present inventors have found a method for efficiently producing a 5—dica renoic acid monoester derivative, and have completed the present invention.
- R is a lower alkanol group, a heterocyclic carbyl group, a halo-substituted acetyl group, an alkoxy acetyl group, an aryloxy acetyl group, a substituted or unsubstituted group
- n represents an integer of 2 to 4.
- An object of the present invention is to provide a method for producing a monoester derivative.
- R ' represents a lower alkanol group, and n represents an integer of 2 to 4). Or a salt thereof.
- R is a formyl group, an acetyl group, a propionyl group, a butyryl group, an isobutylinole group, a phenol group.
- Lower alkanol groups such as phenolic groups, isovaleryl groups, picolinol groups, nicotinyl groups, isonicotinyl groups, and nicotine groups Heterocyclic carbonyl groups such as phenyl group, quinolinyl group, quinoxanol group, and phenethyl group; trifluoroacetyl group, chloroacetyl group, diacetyl group H-substituted acetyl groups such as loroacetyl group, trichloroacetyl group, bromoacetyl group, molybdenum moacetyl group; alkoxyacetyl groups such as methoxy cetyl group and ethoxy cetyl group.
- an alkenyloxycarbonyl group an alkaryloxycarbonyl group such as a benzyloxycarbonyl group; a methanesulfonyl group, a benzenesulfonyl group, a benzylsulfonyl group, and a treensulfonyl group And organic sulfonyl groups.
- the position of substitution of the nitro group on the phenyl group at the 4-position is not limited, and may be any of the 2-, 3- and 4-positions.
- the starting material of the formula (I) used in the production method by the microbial reaction of the present invention can also be used as a salt.
- salts include organic acid addition salts such as acetic acid, tartaric acid, and benzenesulfonic acid; and inorganic acid addition salts such as hydrochloric acid and sulfuric acid.
- the starting material represented by the formula (I) can be produced by a method known per se. That is, the following equation (V)
- R is a lower alkanol group, a heterocyclic carbonyl group, a peroxysubstituted acetyl group, an alkoxyacetyl group, an aryloxy acetyl group, a substituted or unsubstituted phenyl group
- the present invention relates to a compound which can be suitably used as a raw material compound for the production method by the above-mentioned microbial reaction, wherein R in formula (I) is a lower alkanol group, Formula (H) HR '
- R ′ represents a lower alkanol group, and n represents an integer of 2 to 4). It is.
- the present invention provides a compound represented by the following formula, which is produced by subjecting a compound of the above formula (II) or a salt thereof to a production method by the above microbial reaction.
- the present invention also provides a novel optically active 1,4-dihydroxypyridine compound or a salt thereof.
- Microorganisms used in the above microbial reaction include Streptomics spp., Paschicum spp., Botryodipopia spp., Altenaria spp. Or Helmint. Microorganisms having asymmetric hydrolytic ability belonging to the genus Sporium can be used. Examples of such microorganisms include FI-4 strains, FI-741 strains, FI-107 strains, and A-914 strains. The morphological characteristics of these bacteria are shown below.
- a pale gray-white flocculent mycelium layer is formed on the potato dextroth agar medium, and as the culture proceeds, the base becomes black-grey.
- the conidium is a polo-type condensed thread that emerges from a small hole at the top of the conidiophore, and is divided by partition walls and has a shape with piles. The bottom of the conidia is round, the top is sharp and the color is brown.
- a well-developed white cotton-like mycelium layer is formed on a potato dextroth agar medium, and the base turns brown as the culture proceeds.
- Conidia are formed in spherical organs called conidial shells with open apical tips. Conidia are rather long, smooth and non-viscous. As it matures it becomes brown and the cell wall becomes thicker.
- a gray-white mycelium layer is formed on the potato dextroth agar medium, and as the culture proceeds, the base becomes a slightly pink brown color.
- the conidium is the most advanced branch on the conidiophore. This is a file type that emerges from the file type. The conidium stalks are rarely divided, but the fly-rides are well divided and have an elongated structure.
- FI-14 was found to be Alternaria sp.
- FI — 741 is for Botryodi oplodia sp.
- F I — 107 is the name of Mrs. Sp.
- the cell wall component contains L-diaminopimelic acid.
- L Hydroxyproline is not available. Sensitive to 1000 ⁇ g / m1 ore.
- A-914 was identified as Streptomyces viri dosporus.
- the FI-4 shares were deposited with the Institute of Life Science and Industrial Technology, Institute of Industrial Science and Technology on March 18, 1993, and were assigned the accession number FERMP-135335. Later, on June 14, 1993, the deposit was transferred to a deposit based on the Budapest Treaty, and the deposit number was assigned as FERMBP — 4335.
- FI-741 shares, FI-107 and A-914 shares were respectively deposited at the Institute of Biotechnology and Industrial Technology, Institute of Industrial Science and Technology on July 29, 1992, and were commissioned.
- FERM as a number
- microorganisms examples include Streptomyces sp. ATC C1862 and Helmintosporizonatanum IF66678. These microorganisms are stored in the American Type Culture Collection and the Fermentation Research Institute, respectively, and are readily available.
- the medium for culturing the microorganism is not particularly limited, and may be any medium that can be used for culturing a normal microorganism.
- any of the above microorganisms can be used as a carbon source, such as glucose, fructose, sucrose, dextrin, etc.
- Sugars; Sugar alcohols such as cellulose and sorbitol; organic acids such as fumaric acid and citric acid can be used.
- the amount of these carbon sources to be added to the medium is usually preferably about 0.1 to 10%.
- Cultivation of the microorganisms is performed under aerobic conditions at 20 to 40 ° C., preferably 28 to 37 ° C., pH 5 to 9, preferably 6 to 8 in the above medium. It is sufficient to carry out.
- the microbial reaction is carried out by reacting with a microorganism or a processed product thereof.
- the reaction with the microorganism is usually a reaction with a culture of the microorganism, and the culture of the microorganism includes the cultured microorganism cells, culture filtrate, and culture solution.
- the processed microorganism is a microorganism that has been cultured.
- Processed products such as processed products, culture filtrates and culture solutions, and processed products of the microbial cells include dried cells, for example, freeze-dried cells, spray-dried cells, or organic solvents, for example, Bacteria treated with seton, toluene, methanol, butanol, etc., cell extracts, and immobilized products can be mentioned.
- the microorganism is inoculated into the medium at a temperature of 20 to 40 ° C. for 12 to 120 hours after inoculating the microorganism with the medium. 6 to 1 0 1.
- the compound of the formula (I) which is the starting compound, is dissolved in water or a solubilizing agent so as to have a final concentration of 0.5 mgZml to 5 mgZml and added to the culture solution. And react for 18 to 72 hours.
- organic solvents can be used as the solubilizing agent used here.
- organic solvents include acetone, 'methylethylketone, dimethylsulfoxide, dioxane, N, N-dimethylformamide, acetonitril, and the like. These can be used alone or in combination Or more.
- the addition amount is preferably in the range of 3 to 5% based on the medium.
- Streptomyces pyridosporus A—914 was added to 30 ml of C medium (potato starch 2%, essanmeat 2%, yeast extract 0.5%, NaCl 0.25% CaC0 3 0. 3 2%, FeS0 4 7 H 2 0 0.00 0 5%, MnS0 4 4 H 2 0 0.00 0 5%, ZnS0 4 7 H 2 0 0.00 0 5%, pH7. 2 5 0 m including 4)
- C medium potato starch 2%, essanmeat 2%, yeast extract 0.5%, NaCl 0.25% CaC0 3 0. 3 2%, FeS0 4 7 H 2 0 0.00 0 5%, MnS0 4 4 H 2 0 0.00 0 5%, ZnS0 4 7 H 2 0 0.00 0 5%, pH7. 2 5 0 m including 4)
- C medium potato starch 2%, essanmeat 2%, yeast extract
- 1,4-Dihydro-2,6 dimethyl-41- (3-di-torophenyl) pyridin-1,3,5—bis (2-dicarboxylate)
- 60 mg of (chinoaminoethyl) ester'2 hydrochloride was dissolved in 0.75 ml of distilled water, and the mixture was further shaken at 28 ° C for 2 days.
- 1N hydrochloric acid was added to the reaction mixture to adjust the pH to 5.0, and the mixture was extracted with 30 ml of ethyl acetate. The organic layer was separated and back-extracted with a 0.1 N aqueous sodium hydroxide solution (20 mix 3).
- optical purity of this substance was determined using a column for chiral AGP (4 mm x 100 mm) manufactured by Daicel Industries, Ltd., using HPLC (mobile phase; 0.6% isoprono, The analysis was carried out using 0.1 M phosphate buffer (pH 7.1), flow rate: 0.7 mlZmin]. As a result, the optical purity was 100%, and the retention time was 4.7 minutes.
- the reaction was carried out in the same manner as in Example 1-3) using the Altenaria SP FI-4 and Hermintosporizon zonatum IF-6678, and analyzed by TLC. Then, the desired monocarboxylic acid was confirmed.
- 1,4-Dihydro-2,6 dimethyl—4— (3—ditrophenyl) pyridin-3,5—bis dicarboxylate (2—) 60 mg of acetamidoethyl) ester was dissolved in 0.75 ml of dimethyl sulfoxide, and the mixture was further shaken at 28 ° C for 2 days. Add IN to this reaction mixture. Hydrochloric acid was added to adjust the pH to 3.0, and extracted with 3 Oml of ethyl acetate.
- This organic phase was back-extracted with 20 ml of 0.1 M sodium hydroxide. After adjusting the pH of the extract to 3.0, the extract was extracted with 20 ml of ethyl acetate, washed with saturated saline, and dried over anhydrous sodium sulfate. After concentrating the organic phase, adsorb it onto a preparative TLC plate, develop it with a black hole form: methanol (7: 1), and exhibit UV absorption at an R f value of 0.22 The eluted fraction was evaporated to dryness under reduced pressure to obtain 10 mg of the desired title compound.
- optical purity of this substance was determined by HPLC using a chiral AGP (4 mm XIOO mra), a chiral AGP (4 mm XIOO mra) manufactured by Daicel Industries, Ltd., with a mobile phase of 0.35% isopro phenol.
- the analysis was carried out using a phosphate buffer (PH4.4) and a flow rate of 0.8 ml Zmi ⁇ ]. As a result, the optical purity was 100%, and the retention time was 14.3 minutes.
- the (R) -body preparation of the title compound is produced as follows. That is, it was prepared according to the method described by Shibanuma et al. [Chem. Pharm. Bull., Vol. 28 (9), 280-9 — 2812 (1980)]. ) — (+) — 1, 4 — Dihydro ⁇ — 2, 6 — Dimethyl 5 — Methoxycarbinol 4 1 (3 — Nitrophenyl) 1 3 — Pyridin After dissolving 5 mg of potassium oleic acid in 0.5 ml of tetrahydrofuran, add 2-1 of isobutyl chloroformate, stir for 10 minutes, and then add triethylamine 6-1. And N-acetylamine 30 p.
- 1,2-Dihydro-2,6-dimethyl-41- (3-diphenyl) pyridin-1,3,5-dicanoleponic acid is added to each 2 ml of the obtained culture solution.
- Bis (2-acetamidoethyl) ester 4 mg of dimethyl sulfoxide solution (50 ⁇ 1) was added, and the mixture was further shaken at 28 ° C for 2 days.
- the reaction mixture was adjusted to pH 3.0 with 1N hydrochloric acid, and extracted with ethyl acetate. From the obtained organic layer, 0.5 mg of the desired optically active monocarboxylic acid was obtained.
- Helmint sporadion zonatum F ⁇ 6 6 7 8 and bottle audio DIA sp. F 1 — 7 4 1 were each added to FI medium (potato starter 2%, Esusa emissions Mi over preparative 2%, KH 2 P0 4 0. 1%, MgS0 4 7 H 2 0 0.05%, Group courses 1%, explanted bacteria Adeka Roh Nore LG 1 0 9 0. 0 5% ) The cells were cultured at 28 ° C for 3 days.
- the compound represented by the general formula (I) or a salt thereof, which is simple and has high optical purity, is provided by the process for producing a fine substance according to the present invention.
- optically active 1,4-dihydroxypyridin derivatives such as (4R)-(2—nicotinoylamino) ethyl (I) are effective for diseases such as ischemic disease and hypertension.
- 3-nitro) Propyl 1, 4-dihydro 2 6-dimethyl 1 4-(3-nitrophenyl) pyridin 1, 3-5-dicanolevo The production efficiency of Xylate ["Takahashi et al., Jpn. J. Pharmacol., Vol 58, Suppl. I, p399 (1992)"] etc. is achieved.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
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- Bioinformatics & Cheminformatics (AREA)
- Microbiology (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Analytical Chemistry (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Hydrogenated Pyridines (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT93919593T ATE200484T1 (de) | 1992-08-31 | 1993-08-31 | Verfahren zur herstellung von optisch aktiven 1,4-dihydropyridinen |
US08/387,750 US5635395A (en) | 1992-08-31 | 1993-08-31 | Optically active 1,4-dihydropyridine compounds and the microbial process for the stereoselection thereof |
DE69330130T DE69330130T2 (de) | 1992-08-31 | 1993-08-31 | Verfahren zur herstellung von optisch aktiven 1,4-dihydropyridinen |
AU49818/93A AU4981893A (en) | 1992-08-31 | 1993-08-31 | Optically active 1,4-dihydropyridine compound and process for producing the same |
EP93919593A EP0657429B1 (en) | 1992-08-31 | 1993-08-31 | Process for production of optically active 1,4-dihydropyridine compounds |
KR1019950700567A KR100244728B1 (ko) | 1992-08-31 | 1993-08-31 | 광학활성 1,4-디히드로피리딘 화합물 및 그의 제조방법 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4/231877 | 1992-08-31 | ||
JP23187792 | 1992-08-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994005637A1 true WO1994005637A1 (en) | 1994-03-17 |
Family
ID=16930427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1993/001222 WO1994005637A1 (en) | 1992-08-31 | 1993-08-31 | Optically active 1,4-dihydropyridine compound and process for producing the same |
Country Status (8)
Country | Link |
---|---|
US (1) | US5635395A (ja) |
EP (1) | EP0657429B1 (ja) |
KR (1) | KR100244728B1 (ja) |
AT (1) | ATE200484T1 (ja) |
AU (1) | AU4981893A (ja) |
CA (1) | CA2143106A1 (ja) |
DE (1) | DE69330130T2 (ja) |
WO (1) | WO1994005637A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996006829A1 (fr) * | 1994-08-29 | 1996-03-07 | Mercian Corporation | Derive de 1,4-dihydropyrydine |
US6143541A (en) * | 1995-07-31 | 2000-11-07 | Mercian Corporation | Gene encoding a protein having symmetric hydrolase activity for 4-substituted 1,4-dihydropyridine derivatives and its expression product |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4332902B2 (ja) | 1997-04-25 | 2009-09-16 | 味の素株式会社 | 新規ジヒドロピリジン誘導体 |
US6145143A (en) * | 1999-06-03 | 2000-11-14 | Kinetic Concepts, Inc. | Patient support systems with layered fluid support mediums |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6460398A (en) * | 1987-08-28 | 1989-03-07 | Chisso Corp | Production of optically active compound having pyridine skeleton |
JPH04299994A (ja) * | 1991-03-26 | 1992-10-23 | Taisho Pharmaceut Co Ltd | 光学活性1,4−ジヒドロピリジン化合物の製造法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4656181A (en) * | 1982-11-24 | 1987-04-07 | Cermol S.A. | Esters of 1,4-dihydropyridines, processes for the preparation of the new esters, and medicaments containing the same |
US5234821A (en) * | 1990-09-01 | 1993-08-10 | Kazuo Achiwa | Process for preparing 1,4 dihydropyridine compounds |
JPH0641075A (ja) * | 1990-09-01 | 1994-02-15 | Kazuo Achinami | 新規な1,4−ジヒドロピリジン化合物及びその製造方法 |
US5100892A (en) * | 1990-11-13 | 1992-03-31 | Glaxo Inc. | Dihydropyridine vasodilator agents |
JPH0584089A (ja) * | 1991-03-01 | 1993-04-06 | Taisho Pharmaceut Co Ltd | 光学活性1,4−ジヒドロピリジン化合物の製造法 |
JP3286645B2 (ja) * | 1993-03-26 | 2002-05-27 | メルシャン株式会社 | 光学活性1,4−ジヒドロピリジン誘導体およびその製造方法 |
-
1993
- 1993-08-31 AT AT93919593T patent/ATE200484T1/de active
- 1993-08-31 US US08/387,750 patent/US5635395A/en not_active Expired - Fee Related
- 1993-08-31 WO PCT/JP1993/001222 patent/WO1994005637A1/ja active IP Right Grant
- 1993-08-31 CA CA002143106A patent/CA2143106A1/en not_active Abandoned
- 1993-08-31 DE DE69330130T patent/DE69330130T2/de not_active Expired - Fee Related
- 1993-08-31 EP EP93919593A patent/EP0657429B1/en not_active Expired - Lifetime
- 1993-08-31 AU AU49818/93A patent/AU4981893A/en not_active Abandoned
- 1993-08-31 KR KR1019950700567A patent/KR100244728B1/ko not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6460398A (en) * | 1987-08-28 | 1989-03-07 | Chisso Corp | Production of optically active compound having pyridine skeleton |
JPH04299994A (ja) * | 1991-03-26 | 1992-10-23 | Taisho Pharmaceut Co Ltd | 光学活性1,4−ジヒドロピリジン化合物の製造法 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996006829A1 (fr) * | 1994-08-29 | 1996-03-07 | Mercian Corporation | Derive de 1,4-dihydropyrydine |
EP0779277A4 (en) * | 1994-08-29 | 1999-03-03 | Mercian Corp | 1,4-DIHYDROPYRIDINE DERIVATIVES |
CN1089337C (zh) * | 1994-08-29 | 2002-08-21 | 美而香株式会社 | 1,4-二氢吡啶衍生物 |
US6143541A (en) * | 1995-07-31 | 2000-11-07 | Mercian Corporation | Gene encoding a protein having symmetric hydrolase activity for 4-substituted 1,4-dihydropyridine derivatives and its expression product |
US6361987B1 (en) | 1995-07-31 | 2002-03-26 | Mercian Corporation | Gene encoding a protein having asymmetric hydrolase activity for 4-substituted 1,4-dihydropyridine derivatives and its expression product |
Also Published As
Publication number | Publication date |
---|---|
EP0657429A1 (en) | 1995-06-14 |
EP0657429B1 (en) | 2001-04-11 |
KR950702963A (ko) | 1995-08-23 |
EP0657429A4 (en) | 1996-03-27 |
CA2143106A1 (en) | 1994-03-17 |
AU4981893A (en) | 1994-03-29 |
DE69330130D1 (de) | 2001-05-17 |
KR100244728B1 (ko) | 2000-03-02 |
US5635395A (en) | 1997-06-03 |
ATE200484T1 (de) | 2001-04-15 |
DE69330130T2 (de) | 2001-08-02 |
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