WO1999007873A1 - METHOD FOR PRODUCING CYCLIC α-AMINO ACIDS FREE FROM ENANTIOMERS OR THEIR N-PROTECTED DERIVATIVES BY MEANS OF A D-SPECIFIC AMINOACYLASE - Google Patents
METHOD FOR PRODUCING CYCLIC α-AMINO ACIDS FREE FROM ENANTIOMERS OR THEIR N-PROTECTED DERIVATIVES BY MEANS OF A D-SPECIFIC AMINOACYLASE Download PDFInfo
- Publication number
- WO1999007873A1 WO1999007873A1 PCT/EP1998/005087 EP9805087W WO9907873A1 WO 1999007873 A1 WO1999007873 A1 WO 1999007873A1 EP 9805087 W EP9805087 W EP 9805087W WO 9907873 A1 WO9907873 A1 WO 9907873A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- protected
- proline
- microorganisms
- amino acid
- source
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- ULGJWNIHLSLQPZ-UHFFFAOYSA-N 7-[(6,8-dichloro-1,2,3,4-tetrahydroacridin-9-yl)amino]-n-[2-(1h-indol-3-yl)ethyl]heptanamide Chemical compound C1CCCC2=NC3=CC(Cl)=CC(Cl)=C3C(NCCCCCCC(=O)NCCC=3C4=CC=CC=C4NC=3)=C21 ULGJWNIHLSLQPZ-UHFFFAOYSA-N 0.000 title description 2
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- PMMYEEVYMWASQN-UHFFFAOYSA-N dl-hydroxyproline Natural products OC1C[NH2+]C(C([O-])=O)C1 PMMYEEVYMWASQN-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 238000006911 enzymatic reaction Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000012737 fresh medium Substances 0.000 description 1
- 229930195712 glutamate Natural products 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 150000002402 hexoses Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 125000004029 hydroxymethyl group Chemical group [H]OC([H])([H])* 0.000 description 1
- 229960002591 hydroxyproline Drugs 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000411 inducer Substances 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 230000006799 invasive growth in response to glucose limitation Effects 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000009630 liquid culture Methods 0.000 description 1
- 229940049920 malate Drugs 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 239000000594 mannitol Substances 0.000 description 1
- 235000010355 mannitol Nutrition 0.000 description 1
- 239000012092 media component Substances 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 230000004899 motility Effects 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 150000002972 pentoses Chemical class 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- USPWKWBDZOARPV-UHFFFAOYSA-N pyrazolidine Chemical compound C1CNNC1 USPWKWBDZOARPV-UHFFFAOYSA-N 0.000 description 1
- 229940043131 pyroglutamate Drugs 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 230000006340 racemization Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([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])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- FGMPLJWBKKVCDB-UHFFFAOYSA-N trans-L-hydroxy-proline Natural products ON1CCCC1C(O)=O FGMPLJWBKKVCDB-UHFFFAOYSA-N 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 150000003722 vitamin derivatives Chemical class 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- 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
- C12P13/00—Preparation of nitrogen-containing organic compounds
- C12P13/04—Alpha- or beta- amino acids
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
-
- 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
- C12P13/00—Preparation of nitrogen-containing organic compounds
- C12P13/04—Alpha- or beta- amino acids
- C12P13/24—Proline; Hydroxyproline; Histidine
-
- 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
-
- 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
Definitions
- the present invention relates to microorganisms which are capable of one or more N-protected cyclic amino acid derivatives selected from the compounds of the general formula
- a together with -N- and -CH represent an optionally substituted 4-, 5-, 6- or 7- membered saturated heterocyclic ring and R 1 each represents optionally substituted alkyl, alkoxy, aryl or aryloxy, in the form of the racemate or one of the optically active isomers as the only C source, as the only N source or as the only C and N source, and / or are able to hydrolyze them.
- R 1 each represents optionally substituted alkyl, alkoxy, aryl or aryloxy, in the form of the racemate or one of the optically active isomers as the only C source, as the only N source or as the only C and N source, and / or are able to hydrolyze them.
- D-amino acids such as D-Prohn are important intermediates for the manufacture of pharmaceuticals (J Org Chem 1994, 59, 7496-7498)
- JP-A 01 005 488 encompasses a process for the preparation of D-amino acid acylases which, for example, hydrolyze N-benzyloxycarbonylmethionine in D-methionine, N-benzyloxycarbonyl-L-methionine being obtained.
- JP-A 07 127 354 comprises a process for the preparation of D-proline starting from ornithine by means of microorganisms of the species Proteus mitajiri.
- a disadvantage of this process is that on the one hand the educt ornithine is too expensive, and on the other hand that D-proline is inferior Yield is obtained
- JP-A 92 183 399 discloses a process for the preparation of D-proline starting from (DL) -proline using microorganisms of the genus Candida or trichospora. This process also has the disadvantage that D-proline is obtained in low yield
- the object of the present invention is to provide a simple and technically viable method for producing both N-protected cych L-amino acid derivatives and cych D-amino acids.
- the corresponding products are to be isolated in good enantiomeric purity
- microorganisms according to the invention can be isolated, for example, from soil samples, sludge or wastewater, in particular contaminated soil or clear sludge, with the aid of customary microbiological techniques cyclic amino acid derivatives of the general formula I, in the form of the racemate or one of the optically active isomers, __
- the microorganisms are expediently first enriched in a corresponding liquid culture and the anaerobic or aerobic microorganisms are isolated from the culture obtained, the desired N-protected cychino amino acid derivatives as the only N source, as the only C source or as the only C and Can utilize the N source and / or are able to hydrolyze it
- optionally substituted saturated 4-membered heterocyclic rings are azetidine.
- optionally substituted saturated 5-membered heterocyclic rings are proline, hydroxyproline, pyrazolidine, methylpyrazolidine, imidazolidine, pyroglutamate, oxazolidine, isoxazolane, thiazolidine and triazolidine
- optionally substituted saturated 6-membered heterocyclic rings are piperidine. 3-methylpiperidine, piperazine, pipecolin, 3-methylpiperazine, morpholine
- R 1 in the N-protected cychino amino acid derivative of the general formula 1 means alkyl, alkoxy, aryl or aryloxy
- Alkyl here means a substituted or unsubstituted C 1 -C alkyl group, preferably a substituted or unsubstituted C 1 -C alkyl group. Suitable substituents are, for. B hydroxy or halogens such as F, Cl. Br or J Examples of a Ci-is-alkyl group are methyl, chloromethyl, trifluoromethyl, co-hydroxyalkyl, ethyl, propyl, butyl, iso-butyl, iso-propyl and stearyl ⁇ -hydroxyalkyl group in the following means a hydroxymethyl, hydroxyethyl, Hydroxypropyl or Hydroxybutyl Group Preferably alkyl means methyl
- Alkoxy means a substituted or unsubstituted C 1 8 alkoxy group, preferably a substituted or unsubstituted C 4 alkoxy group. Suitable substituents are, for example, the substituents mentioned for alkyl. Examples of an alkoxy group are methoxy, chloromethoxy, trifluoromethoxy, ethoxy, propoxy, butoxy, tert -butoxy, iso-butoxy and stearoxy
- Aryloxy preferably means benzyloxy
- the compounds of the general formula I are preferably N-protected cyclic D-amino acid derivatives
- N-protected cyclic D-amino acid derivatives are N-protected D-proline derivatives, for example N-acetyl and / or N-benzyloxycarbonyl-D-proline (N-Z-D-proline), and N-protected D-pipecolinic acid derivatives
- the microorganisms can use, for example, sugar, sugar alcohols, or carboxylic acids as a growth substrate as a suitable C source.
- Hexose for example glucose and fructose, pentoses, for example ribose, or disaccharides, for example sucrose
- Amino carboxylic acids, mono-, di - or tricarboxylic acids or their salts can be used.
- mannitol or glycerin can be used as sugar alcohols.
- proline, glutamate, lysine, glycine or their salts can be used as amino carboxylic acids.
- Acetic acid, acetate, lactic acid can be used as mono-, di- or tricarboxylic acids. Lactate, succinic acid, succinate, malic acid, malate, citric acid, citrate or their salts are used
- the microorganisms can, for example, ammonium, nitrate, urea as a suitable N source.
- the media customary in the art for example the medium described in Table 1, can preferably be used as the selection and growth medium.
- the medium described in Table 1 is preferably used
- the active enzymes of the microorganisms are expediently induced during the cultivation and selection.
- An N-protected cyclic amino acid derivative according to formula I, preferably its D-isomer, is expediently used as the enzyme inducer
- the cultivation and selection is usually carried out at a temperature of 5 to 100 ° C., expediently from 10 to 75 ° C., preferably from 15 to 40 ° C., in particular from 20 to 35 ° C. and at a pH between pH 0 and pH 12, expediently from pH 4 to 10, preferably between pH 5 and pH 9
- microorganisms are microorganisms corresponding to the microorganisms with the designation MIS1 12, MIS125, MIS132, MIS211, MIS213, MIS221, MIS222.
- MIS231, MIS242, MIS253 Particularly preferred are microorganisms of the genus Arthrobacter, such as the species Arthrobacter oxydans GS121, Arthrobacter sp GS132, Arthrobacter pascens or ramosus GS131 (DSM 1 1637), Arthrobacter pascens or ramosus GS134, and their variant organisms and mutant mutants GS131 were deposited on 30.06.1997 with the German Collection of Microorganisms and Zellkultur GmbH, Mascheroderweg lb, D-38124 Braunschweig, according to the Budapest Treaty under the deposit number DSM 1 1637 "Flinktionally equivalent ⁇ ⁇ arianten and mutants" are understood to mean microorganisms which are derived from the described original organisms and
- a together with -N- and -CH and R 1 have the meaning given, comprises the reaction of a racemic N-protected cych aminosaur derivative of the general formula
- a together with -N- and -CH and R 1 have the meaning given, by means of the microorganisms already described and / or an enzyme preparation thereof, into a cyclic D-amino acid (formula III) and / or the N- protected cychschen L-amino acid derivatives (formula II), and optionally isolation of these compounds
- N-protected cyclic amino acid derivatives of the formula I are used as N-protected cyclic amino acid derivatives of the formula I.
- the educts, the racemic N-protected cyclic amino acid derivatives of the general formula I such as, for example, NZ- (DL) -proline, are commercial compounds
- biotransformation is possible with all microorganisms that utilize and / or hydrolyze an N-protected cyclic amino acid derivative in the form of the racemate or its optically active isomers as the only N source, as the only C source or as the only C and N source Enzyme extracts from these microorganisms are also suitable.
- Biotransformation is preferably carried out with the microorganisms described above, in particular with the microorganisms described above of the species Arthrobacter pascens or ramosus GS131 (DSM 1 1637) or with their functions! equivalent variants and mutants
- the biotransformation can be carried out with resting cells (non-growing cells which no longer require a carbon and energy source) or with growing cells under aerobic or anaerobic conditions.
- the biotransformation is preferably carried out with resting cells under aerobic conditions
- Biotransformation for example low-molar buffers such as low-molar phosphate buffer, Tris buffer or the medium described in Table 1.
- the biotransformation is preferably carried out in the medium according to Table 1
- the biotransformation is expediently carried out by adding an N-protected amino acid derivative so that the concentration does not exceed 50% by weight, preferably 20% by weight.
- the N-protected amino acid derivative is expediently added once or continuously
- the pH of the medium can be in a range from 3 to 12, preferably from 5 to 9.
- the biotransformation is expediently carried out at a temperature of 10 to 70 ° C., preferably 20 to 50 ° C.
- an N-protected cyclic amino acid derivative is converted into a cyclic D-amino acid.
- An N-protected L-amino acid derivative is obtained.
- the cyclic D-amino acid and the N-protected L-amino acid derivative can be obtained in good yield and Enantiomeric purity (ee greater than 98%) can be isolated
- N-protected L-amino acid derivative obtained in this way and / or the D-amino acid obtained in this way can be isolated by customary workup methods, such as, for example, by extraction
- Vitamin solution 1.0 ml / 1 pH 7.0
- C and N sources were added to this basic medium
- the isolates obtained with the method described in Example 1 (A) were multiplied in the medium described there.
- the cells produced in this way were harvested by centrifugation and then resuspended in saline solution (8.5 g / l) and washed after resuspending in saline solution the ability to hydrolysis of N-protected cych amino acids was tested with resting cells
- a suitable amount of cells with 25 mM N-acetyl- (DL) -proline, NZ- (DL) -proline and NZ- (DL) -pipecolinic acid or 12.5 mM N-acetyl- (DL) -pipecolinic acid incubated in buffer solution (50 mM phosphate buffer, pH 7.0) under rubble (30 ° C).
- Figure 1 shows the reaction of MIS132 and MIS222 with N-Z- (DL) -pipecolinic acid
- the isolates obtained with the method described in Example 1 (B) were multiplied in the medium described there.
- the cells produced in this way were harvested by centrifugation and then resuspended in saline solution (8.5 g / l) and washed. After resuspending in saline solution the ability to hydrolysis of N-protected cycho amino acids was tested with resting cells.
- a suitable amount of cells with 100 mM NZ-DL-proline or 50 mM NZ-DL-pipecolic acid in buffer solution (50 mM phosphate buffer, pH 7.0) below
- GS131 In order to characterize bacterial strain GS131 in more detail, the growth of this strain was investigated with different C and N sources.
- the basic medium described in Table 1 was used and the C sources were added to 10 g / 1 each and the N sources to a final concentration of 40 mM. The cultures were then incubated at 30 ° C. GS131 was able to utilize a wide variety of C and N sources and even showed good growth in most of the media examined.
- Bacterial strain GS131 was grown under variation of different media components or their concentration at 30 ° C. The cells produced in this way were harvested by centrifugation and then resuspended in saline solution (8.5 g / l) and washed. After resuspending in saline solution, the ability to hydrolyze N-Z-D-proline was examined with resting cells under aerobic conditions.
- Bacterial strain GS131 was propagated in the medium described in Example 1 (B). The cells produced in this way were harvested by centrifugation and then resuspended in saline solution (8.5 g / l) and washed. After resuspending in saline solution, the ability to Hydrolysis of N-protected cych amino acids was tested. A suitable amount of cells with the respective substrate (10 mM NZL-proline or NZD-proline or 5 mM NZL-pipecolic acid or N-ZD-pipecolic acid) in buffer solution (50 mM phosphate buffer , pH 7.0) (30 ° C.) Aliquots were removed at various times and the wetting of the substrates was monitored by HPLC
- Figure 2 shows the enantioselectivity of D-aminoacylase from bacterial strain GS 131
- Bacterial Strain GS131 was propagated in the medium described in Example 1 (B). The cells thus produced were harvested by centrifugation and then in saline solution (8.5 g / 1) Resuspended and washed After resuspending in saline solution, the ability to hydrolize N-protected cych amino acids was tested with resting cells.
- NZL-pipecolic acid was then obtained by extraction three times (40 ml each) with butyl acetate. The organic phases were combined, dried over sodium sulfate and finally until evaporated to dryness After dissolving the solid in 10 ml of ethyl acetate and adding 9 ml of hexane, NZL-pipecolic acid was crystallized by cooling to a temperature ⁇ 10 ° C. After filtration and drying, 13.22 g of NZL-pipecolinic acid (64.9% of theory Th) received
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU93412/98A AU9341298A (en) | 1997-08-11 | 1998-08-11 | Method for producing cyclic alpha-amino acids free from enantiomers or their n-protected derivatives by means of d-specific aminoacylase |
JP51171799A JP2002509441A (en) | 1997-08-11 | 1998-08-11 | Method for producing enantiomerically pure cyclic α-amino acids and their N-protected derivatives using D-specific aminoacylase |
EP98946316A EP1005563A1 (en) | 1997-08-11 | 1998-08-11 | METHOD FOR PRODUCING CYCLIC alpha-AMINO ACIDS FREE FROM ENANTIOMERS OR THEIR N-PROTECTED DERIVATIVES BY MEANS OF A D-SPECIFIC AMINOACYLASE |
CA002299324A CA2299324A1 (en) | 1997-08-11 | 1998-08-11 | Method for producing cyclic .alpha.-amino acids free from enantiomers or their n-protected derivatives by means of a d-specific aminoacylase |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH188897 | 1997-08-11 | ||
CH1888/97 | 1997-08-11 | ||
CH2868/97 | 1997-12-12 | ||
CH286897 | 1997-12-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999007873A1 true WO1999007873A1 (en) | 1999-02-18 |
Family
ID=25688929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/005087 WO1999007873A1 (en) | 1997-08-11 | 1998-08-11 | METHOD FOR PRODUCING CYCLIC α-AMINO ACIDS FREE FROM ENANTIOMERS OR THEIR N-PROTECTED DERIVATIVES BY MEANS OF A D-SPECIFIC AMINOACYLASE |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1005563A1 (en) |
JP (1) | JP2002509441A (en) |
AU (1) | AU9341298A (en) |
CA (1) | CA2299324A1 (en) |
WO (1) | WO1999007873A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002101003A3 (en) * | 2001-06-08 | 2004-02-26 | Rhodia Chimie Sa | Stereoselective preparation of cyclic l-amino acids |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0416282A1 (en) * | 1989-09-06 | 1991-03-13 | Degussa Aktiengesellschaft | Microbiologically produced N-Acyl-L-proline-acylase, process for its production and its use |
WO1995010604A1 (en) * | 1993-10-15 | 1995-04-20 | Chiroscience Limited | Enzyme and its use in preparing (s)-pipecolic acid |
EP0686698A2 (en) * | 1994-06-09 | 1995-12-13 | Lonza Ag | Biotechnological process for the production of cyclic S-alpha-aminocarboxylic acids and R-alpha-aminocarboxylic acid amides |
WO1997033987A1 (en) * | 1996-03-13 | 1997-09-18 | Lonza Ag | Process for producing n-protected d-proline derivatives |
-
1998
- 1998-08-11 JP JP51171799A patent/JP2002509441A/en active Pending
- 1998-08-11 EP EP98946316A patent/EP1005563A1/en not_active Withdrawn
- 1998-08-11 AU AU93412/98A patent/AU9341298A/en not_active Abandoned
- 1998-08-11 CA CA002299324A patent/CA2299324A1/en not_active Abandoned
- 1998-08-11 WO PCT/EP1998/005087 patent/WO1999007873A1/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0416282A1 (en) * | 1989-09-06 | 1991-03-13 | Degussa Aktiengesellschaft | Microbiologically produced N-Acyl-L-proline-acylase, process for its production and its use |
WO1995010604A1 (en) * | 1993-10-15 | 1995-04-20 | Chiroscience Limited | Enzyme and its use in preparing (s)-pipecolic acid |
EP0686698A2 (en) * | 1994-06-09 | 1995-12-13 | Lonza Ag | Biotechnological process for the production of cyclic S-alpha-aminocarboxylic acids and R-alpha-aminocarboxylic acid amides |
WO1997033987A1 (en) * | 1996-03-13 | 1997-09-18 | Lonza Ag | Process for producing n-protected d-proline derivatives |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002101003A3 (en) * | 2001-06-08 | 2004-02-26 | Rhodia Chimie Sa | Stereoselective preparation of cyclic l-amino acids |
US7425530B2 (en) | 2001-06-08 | 2008-09-16 | Rhodia Chimie | Stereoselective preparation of cyclic L-amino acids |
CN100482800C (en) * | 2001-06-08 | 2009-04-29 | 罗狄亚化学公司 | Steroselective preparation of cyclic L-amino acids |
Also Published As
Publication number | Publication date |
---|---|
JP2002509441A (en) | 2002-03-26 |
EP1005563A1 (en) | 2000-06-07 |
CA2299324A1 (en) | 1999-02-18 |
AU9341298A (en) | 1999-03-01 |
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