Patents for C12P 41 - Processes using enzymes or micro-organisms to separate optical isomers from a racemic mixture (4,784)
11/1990
11/14/1990CN1046935A Stabilization of carboxyl esterase
11/07/1990EP0396447A1 Process for the selective separation of the enantiomers of halogenpropionic acid esters
11/02/1990CA2015792A1 Process for the enantiomerically selective separation of halogeno-2-propionic acid esters
10/1990
10/31/1990EP0395181A1 Stabilization of carboxyl esterase
10/28/1990WO1990013635A1 Stabilization of carboxyl esterase
10/16/1990US4963492 Using lipases from pig liver or pancreas or microorganisms
10/10/1990EP0391345A2 Method for preparing optically active substances
10/09/1990US4962031 Specific compounds having hydroxyl groups reacted with esters in presence of hydrolases
10/01/1990CA2012364A1 Optically active compound and process for preparing the same
09/1990
09/26/1990EP0388778A2 Preparation of dioxolane derivatives
09/12/1990EP0387068A1 Improving the enantioselectivity of biocatalytic resolution of racemic compounds
09/12/1990EP0386848A1 Novel Exophiala species
09/11/1990US4956285 Isomerization of mixture with microorganisms or enzymes
09/11/1990CA1273885A1 D-2-haloalkanoic acid halidohydrolase
08/1990
08/29/1990EP0384189A2 Optically active compound and a process for the production thereof
08/22/1990EP0383403A1 Process for preparation of organic chemicals
08/22/1990EP0179864B1 Process for preparing l-carnitine
08/21/1990US4950606 Enantiomeric enrichment and stereoselective synthesis of chiral amines
08/16/1990EP0382114A2 N-acyl-2-amino acid amides containing phosphinic-acid esters, process for their preparation and N-acyl-2-amino acid nitriles as starting products
08/16/1990EP0382113A1 Process for the enzymatic separation of 2-amino-4-methyl-phosphino-butyric-acid derivatives
07/1990
07/24/1990US4943528 Process for the production of optically active (R)-(-)-3-halo-1,2-propanediol
06/1990
06/27/1990EP0375394A2 Process for preparing leukotriene antagonists
06/27/1990EP0374651A1 Process for the preparation of L-phosphinothricine
06/22/1990CA2006197A1 Process for preparing leukotriene antagonists
06/19/1990US4935359 Fermentation process
06/13/1990EP0372891A2 Optically active compounds and a process for producing these compounds
06/12/1990US4933290 Reacting with an ester, acid, or anhydride in the presence of a lipase immobilized on a porous carrier
06/12/1990US4933282 Treating gamma-haloacetonacetic acid ester with microorganism under anaerobic conditions
06/05/1990US4931399 Process for preparing optically-active glycerol ketal derivatives
06/05/1990CA1269941A1 Process for preparing l-carnitine
05/1990
05/29/1990US4929760 Enantiomorphs, liquid crystals, fungicides, herbicides
05/23/1990EP0369553A1 Process for the enantioselective preparation of D-(-)-3-hal-2-methylpropionic acid or derivatives thereof and the preparation of captopril therefrom
05/08/1990US4923811 Carrying out enzymatic oxidations
05/08/1990US4923810 Fractionation of enzyme into adsorbed and nonadsorbed portions
05/03/1990WO1990004643A1 Process for preparing optically active glycidate esters
05/02/1990EP0366303A2 Biocatalysts
05/02/1990CN1041785A Method for preparing optically active 3-phenylglycidic acid esters
05/01/1990US4922001 Chiral synthesis units from prochiral glycerol
05/01/1990US4921798 Synthesis of (aryl or arylalkyl)-3-hydroxy propionic acids and aryl alkanediols having high optical purity
04/1990
04/25/1990EP0365029A2 Method of systhesizing optically active beta-halolactic acid or glycidic acid
04/17/1990US4918196 Heating in presence of strong base, solvent or solvent-free
04/11/1990EP0362556A1 Method for preparing optically active 3-phenylglycidic acid esters
04/10/1990US4916074 Process for producing optically active compounds
04/03/1990US4914028 Method of preparing beta-2',2'-difluoronucleosides
03/1990
03/27/1990US4912044 Complexing Dna with cloning vector; insertion into microorganism
03/27/1990US4912042 Preparation of D-malic acid or derivative
03/20/1990US4909916 Electrodialysis
03/14/1990EP0358428A2 Process for producing optically active compounds
03/12/1990EP0264429A4 ENZYMATIC PROCESS FOR PREPARING OPTICALLY-ACTIVE 1,2-DIHYDRO-3H-PYRROLO 1,2a]PYRROLE-1-CARBOXYLIC ACID DERIVATIVES.
03/08/1990WO1990002192A1 Method of catalyzing stereochemical reactions
03/07/1990EP0357009A2 Method of resolution of hydroxy-cyclopentenones using a lipase and transacylation agents
03/07/1990EP0356912A2 A method for the preparation of an optically active 2-substituted carboxylic acid
03/06/1990US4906568 Process for isolation of carnitinehydrolyase and an effector from enterobacteriaceae and use thereof to prepare carnitine
02/1990
02/28/1990EP0355102A1 Electroenzymatic method for producing compounds having a controlled enantiomeric purity.
02/27/1990US4904593 Novel microorganism, a novel esterase and method for preparing the same
02/27/1990US4904589 Cultivating pseudomonas or tricosporon to assimilate only l-(+)-tartaric acid from a racemic mixture
02/27/1990CA1266248A1 Method and apparatus for resolution of stereoisomers in multiphase and extractive membrane reactors
02/06/1990US4898822 Process for preparing optically active indoline-2-carboxylic acid
01/1990
01/31/1990EP0352846A1 Process for the preparation of biocatalysts with previously absent stereoselective enzyme activity
01/30/1990CA1265083A1 Process for the preparation of aromatically substituted l-amino acids
01/25/1990WO1990000611A1 Synthesis of stereospecific enzyme by non-chromosomal transformation of a host
01/17/1990EP0350811A2 Enzymatic resolution process
01/16/1990US4894336 Cultures, microorganisms, hydrolytic enzymes
01/03/1990EP0348901A2 Process for producing optically active alfa-substituted organic acid and microorganism and enzyme used therefor
12/1989
12/19/1989US4888281 Method of catalyzing chemical reactions
12/13/1989EP0345658A2 Processes for preparing a biocatalyst and its use in the separation of racemic mixtures
12/12/1989US4886750 Process for the preparation of a pharmaceutically active compound in a stereospecific form of the formula
12/06/1989EP0344791A2 Process for the enzymatic resolution of the optical isomers of racemic ester derivatives of 3-mercapto-2-alkyl-propionic acid
12/05/1989US4885246 (1s,5r)-7,7-alkylenedioxy-2-alkoxycarbonylbicyclo (3.3.0)octan-3-one by treating a racemic mixture with a microorganism
11/1989
11/29/1989EP0344044A1 Process for the preparation of optically active 2-aryloxy- or 2-arylthioalcanoic acids
11/29/1989EP0343714A1 Phenylglycidate stereoisomers, conversion products thereof with e.g. 2-nitrothiophenol and preparation of diltiazem
11/21/1989US4882451 Optically active compounds and process for producing thereof
11/21/1989US4882084 Optically active substituted biphenyl compounds
11/15/1989EP0341542A2 Method for the production of enantiomers
11/14/1989US4880737 Hydrolysis with enzymes, resolution
11/02/1989WO1989010410A1 Process for preparing optically active 1,3-butanediol
11/02/1989EP0339751A1 Process for the enzymatic preparation of beta-lactams
10/1989
10/25/1989EP0338645A2 Process for producing an optically active 2-arylpropionic acid
10/19/1989WO1989009765A1 Enzymatic resolution systems and compounds useful in the systems and their reparations
10/04/1989EP0334966A1 Process for synthesizing optically active compounds
09/1989
09/27/1989EP0334358A2 Novel D-amidase and process for producing D-alpha-alanine and/or L-alpha-alanineamide
09/27/1989CN1035847A Process for preparation of optically active 2-aryl propionic acid
09/27/1989CN1035846A Process for preparation of optically active acids of 2-aryl alkane
09/20/1989EP0333142A2 Process for the preparation of (R)-glycidyl esters
09/13/1989EP0332379A2 Production process of L-alpha-amino acids
09/12/1989US4865771 Process for preparing L(-)-carnitine chloride from 3,4-epoxybutyric esters and novel intermediate compounds
09/06/1989EP0330695A1 Process for preparation of organic chemicals
09/06/1989EP0232486B1 Process for reprocessing the solution which is left after the removal of the enzymes upon the enzymatic racematic splitting of an n-acetyl-dl-amino acid in the presence of an l-amino acid acylase
09/06/1989CN1035320A Acylamino acid racemase and its use
09/05/1989US4863859 Biochemical resolution using an esterase
08/1989
08/30/1989EP0330529A1 Process for the preparation of optically active 2-aryl-propionic acids
08/30/1989EP0330217A2 Process for the continuous biotechnological preparation of optical isomer S(+) of 2-(6-methoxy-2-naphthyl)propionic acid
08/29/1989US4861724 Process for preparing optically active 2,2'-dihydroxy-1,1'-binaphthyl
08/22/1989US4859602 Enzymatic resolution using penicillin amidase
08/16/1989EP0328345A2 Method of preparing beta-2',2'-difluoronucleosides
08/16/1989EP0328125A2 Process for the enzymatic separation of the optical isomers of racemic alpha-alkyl-substituted primary alcohols
08/15/1989US4857469 Process for preparing optically active mercapto compound
08/15/1989US4857468 Biosynthesis
08/15/1989US4857462 Process for obtaining D(+)-naproxen
08/09/1989EP0327156A1 Process for the preparation of sulphur-containing L-alpha-amino acids
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