| Patents for C07B 57 - Separation of optically-active organic compounds (3,737) |
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| 07/31/1991 | EP0438796A2 Process for the enantioselection synthesis of alkylated oxindoles used as intermediates in the preparation of physostigmine |
| 07/23/1991 | US5034535 Multistage reaction with chloroformate ester and isopropylamino-1,2-propanediol for cyclization, sulfonation and etherification |
| 07/23/1991 | CA2034668A1 Process for the enantioselection synthesis of alkylated oxindoles used as intermediates in the preparation of physostigmine |
| 07/17/1991 | EP0437369A2 Formation and resolution of ibuprofen lysinate |
| 07/17/1991 | EP0436722A1 Polysaccharide derivatives and separating agent |
| 07/16/1991 | US5032277 Optical resolution with β-1,4-mannan tribenzoate |
| 07/11/1991 | CA2033871A1 Formation and resolution of dexibuprofen lysine |
| 07/09/1991 | US5030725 Method of resolving cis 3-amino-4-[2-(2-furyl)eth-1-yl]-1-methoxycarbonylmethyl-azetidin-2-one using (-)-DAG |
| 07/09/1991 | US5030354 Separation agent for optical isomers |
| 06/12/1991 | EP0431121A1 Process for the resolution of threo-3-[(2-aminophenyl)-thio]-2-hydroxy-3-(4-methoxy-phenyl)propionic acid. |
| 06/05/1991 | EP0430544A1 Process for resolving chiral intermediates used in making calcium channel blockers |
| 06/04/1991 | US5021593 Ruthenium-optically active phosphine complex |
| 05/30/1991 | WO1991007366A1 A process for preparing r(+)-terodiline and salts thereof |
| 05/28/1991 | US5019583 N-phenyl-N-(4-piperidinyl)amides useful as analgesics |
| 05/22/1991 | EP0427904A1 A process for preparing R(+)-terodiline and salts thereof |
| 05/21/1991 | US5017290 Separation agent comprising acyl- or carbamoyl-substituted polysaccharide |
| 05/21/1991 | CA2028376A1 Process for resolving chiral intermediates used in making calcium channel blockers |
| 05/14/1991 | US5015764 Separation of racemic mixtures by forming a salt solution with an organic base followed by treatment with a chiral organic nitrogenous base and precipitation |
| 05/14/1991 | US5015755 9-anthrylalkyl compounds |
| 05/08/1991 | EP0426253A1 Process for the separation of R and S-2,2R1, R2-1,3-dioxolane-4-carboxylic acid |
| 05/08/1991 | EP0425980A1 Process for the separation of enantiomers of benzopyran derivatives |
| 05/07/1991 | US5013834 Process for the preparation of an optically active benzothiazepinone |
| 05/07/1991 | US5013754 Synthetic pyrethroid |
| 05/04/1991 | CA2029107A1 Process for the resolution of enantiomers of benzopyran derivatives |
| 05/02/1991 | CA2029173A1 Process for the separation of r and s-2,2-r, r-1,3-dioxolane-4-carboxylic acid |
| 04/23/1991 | CA1283409C2 Process and intermediates for making 16-phenoxy- and 16-substituted phenoxy-prostatrienoic acid derivatives and their stereoisomers |
| 04/23/1991 | CA1283408C2 Processes and intermediates for making 16-phenoxy- and 16-substituted phenoxy-prostatrienoic acid derivatives and their steroisomers |
| 04/16/1991 | CA1283249C Process for the resolution of racemates of optically active bicyclic imino- -carboxylic esters, and the use of the compounds thus obtainable for the synthesis of carboxyalkyldipeptides |
| 04/03/1991 | EP0420120A2 Optically active benzyl alcohol compound and pharmaceutical composition |
| 04/02/1991 | CA1282410C Process for the preparation of optically active ó-arylalkanoic acids and novel intermediates thereof |
| 03/27/1991 | EP0419297A1 Process for the separation of optical isomers from 1,4-dihydropyridine derivatives |
| 03/27/1991 | EP0418770A2 Process for the chemical resolution of 5-alkoxy-substituted (+/-)-1,3-dimethyloxindolylethylamines |
| 03/26/1991 | US5002669 Separation agent comprising 1,3-glucan |
| 03/26/1991 | CA1282080C Process for the resolution of 1-aminoindanes |
| 03/20/1991 | CA2025593A1 Process for the chemical resolution of 5-alkoxy-substituted (+)-1,3-dimethyloxindolyethylamines |
| 03/20/1991 | CA2007718A1 Process for the resolution of 1,4-dihydropyridine derivatives optical isomers |
| 03/13/1991 | EP0416736A2 Method of resolving cis 3-amino-4-[2-(2-furyl)eth-1-yl]-1-methoxycarbonylmethyl-azetidin-2-one |
| 03/05/1991 | CA1281029C Optically active ketals, processes for their preparation and their use in the synthesis of ó-arylakanoic acids |
| 02/26/1991 | CA1280763C PROCESS FOR THE PREPARATION OF CERTAIN PAIRS OF ENANTIOMERS OF .alpha.-CYANO-3-PHENOXY-4-FLUOROBENZYL PERMETHRATE |
| 02/21/1991 | WO1991002006A1 Polysaccharide derivatives and separating agent |
| 02/19/1991 | US4994604 Salt formation in aqueous-organic solvent mixture followed by preferential crystallization |
| 02/19/1991 | CA1280431C Methode of resolving cis 3-amino-4-[2-(2-furyl)vinyl]- 1-methoxycarbonylmethyl-azetidin-2-one and di-p-toluoyl-tartaric acid salts thereof |
| 02/13/1991 | CN1049160A Optical resolution method for 3s-(3-carboxybenzyl)-6-(5-fluoro-2-benzothiazolyl)methoxy-4s-chromanol |
| 02/06/1991 | EP0411813A1 Optical resolution method for 3S-(3-carboxybenzyl)-6-(5-fluoro-2-benzothiazolyl)methoxy-4S-chromanol |
| 02/06/1991 | EP0411074A1 Resolution process |
| 02/01/1991 | CA2022021A1 Method of resolving cis 3-amino-4-(2-(2-furyl)eth-1-yl)-1-methoxycarbonylmethyl- azetidin-2-one |
| 01/23/1991 | EP0409044A2 A process for the optical resolution of dropropizine |
| 01/22/1991 | US4987231 Optical resolution method for 3R-(3-carboxybenzyl)-6-(5-fluoro-2-benzothiazolyl)methoxy-4R-chromanol |
| 01/16/1991 | EP0408340A2 Ruthenium-optically active phoshine complex useful as catalyst |
| 01/16/1991 | EP0408338A2 Catalytic production of carboxylic acids and esters thereof |
| 01/16/1991 | EP0407412A1 Substituted cyclodextrins and process for chromatographic separation of chiral organic compounds. |
| 01/15/1991 | US4985575 Reacting with Optically Active Amine Resolver, Decomposing the Diastereomer Salt |
| 01/15/1991 | US4985557 Optically active pyridobenzoxazine derivatives and intermediates thereof |
| 01/10/1991 | WO1991000270A1 Process for the resolution of threo-3-[(2-aminophenyl)-thio]-2-hydroxy-3-(4-methoxy-phenyl)propionic acid |
| 01/08/1991 | US4983630 2,2-difluorocyclopropylethane derivatives, processes for their preparation and their use as pesticides |
| 01/01/1991 | US4981998 Process for the preparation and purification of D-hydroxyphenoxypropionic acid |
| 12/12/1990 | EP0402322A2 Process for the production of R(+)-aminocarnitine and S(-)-amino-carnitine |
| 11/27/1990 | US4973745 Forming salt with p-nitrophenyl-aminopropanediol, crystallization, ibuprofen, flurbiprofen, carprofen |
| 11/27/1990 | CA1276932C Process for the preparation of hydrogen levomepromazine maleate |
| 11/27/1990 | CA1276931C2 Process and intermediates for making 16-phenoxy- and 16-substituted phenoxy-prostatrienoic acid derivatives and their stereoisomers |
| 11/22/1990 | EP0398616A2 Chiral synthesis for producing 1-azabicyclo[2.2.1]heptane-3-carboxylates |
| 11/22/1990 | EP0398132A2 Phosphorous compounds |
| 11/15/1990 | CA2016706A1 Chiral synthesis for producing 1-azabicyclo¬2.2.1|heptane-3-carboxylates |
| 11/14/1990 | EP0397567A1 Antitumor substance, process for its preparation and pharmaceutical compositions containing it |
| 11/13/1990 | CA1276177C2 Process for the optical resolution of racemic mixtures of -naphthyl-propionic acids |
| 11/12/1990 | CA2016436A1 Antitumoral substance, process for its preparation, and pharmaceutical compositions containing same |
| 10/30/1990 | US4966985 Optically active carboalkylated amino alcohols and their utilization in optical resolution |
| 10/30/1990 | US4966694 Separation agent comprising acyl- or carbamoyl-substituted polysaccharide |
| 10/16/1990 | US4963671 Using chiral acid |
| 10/16/1990 | US4963584 Pyrethroidal composition comprising more than one active ingredients |
| 10/16/1990 | US4963254 Packing material for chromatographic use |
| 10/09/1990 | CA1275108A1 Insecticidal composition comprising more than one active ingredients |
| 10/02/1990 | US4960762 Chiral two-phase system and method for resolution of racemic mixtures and separation of diastereomers |
| 09/11/1990 | CA1273941A1 Process for the preparation of optically active azole derivatives |
| 09/11/1990 | CA1273930A1 Diastereoisomer a of 2,6-dimethyl-4-(3-nitrophenyl)-1, 4-dihydropyridine-3,5-dicarboxylic acid 3- (1-benzylpyrrolidin-3-yl) ester 5-methyl ester and dextrorotatory isomer thereof |
| 09/05/1990 | EP0385423A2 Process for the preparation of the optical isomers of 1,4-dihydro-5-isopropoxy-2-methyl-4-(2-trifluoromethyl phenyl)-1,6-naphthyridine-3-carboxylic-acid ethyl ester and 1,4-dihydro-5-isopropoxy-2-methyl-4-(2-trifluormethyl phenyl)-1,6-naphthyridine-3-carboxylic-acid-2-(N-methyl-N-phenyl methyl amino) ethyl ester |
| 09/05/1990 | EP0384917A1 (+)-Or (+)-1-(2-N-substituted aminoethyl)-1-methyl-7-methoxy-1,2,3,4-tetrahydronaphthalene, and process for production thereof |
| 08/28/1990 | US4952696 Process for resolving the enantiomers of a benzopyran derivative |
| 08/22/1990 | EP0383579A1 N-Phenyl-N-(4-piperidinyl)amides useful as analgesics |
| 08/22/1990 | EP0383320A1 A process for preparation of enantiomerically pure polysubstituted 1,4-dihydropyridines |
| 08/22/1990 | EP0383316A2 Process for the separation of enantiomers of benzopyran derivative |
| 08/22/1990 | CN1009273B Process for the preparation of certain pairs of enantiomers of 2-cyano-3-phenoxy-4-fluorobenzyl permethrate |
| 08/18/1990 | WO1990009376A1 A process for preparation of enantiomerically pure polysubstituted 1,4-dihydropyridines |
| 08/18/1990 | CA2047741A1 Process for preparation of enantiomerically pure polysubstituted 1,4-dihydropyridines |
| 08/16/1990 | EP0382506A2 Optically active diastereomer salts of tetrahydro-2-furoic acid |
| 08/16/1990 | EP0270595B1 An optically active reagent and a method for the determination of enantiomeric amine compounds |
| 08/15/1990 | CA2009924A1 Process for resolving the enantiomers of a benzopyran derivatives |
| 08/08/1990 | EP0150221B1 Packing for use in separation |
| 08/01/1990 | EP0379917A2 Optically active (meth)acrylic-acid derivatives, their preparation, their polymerisation into optically active polymers and their use |
| 07/31/1990 | US4945181 Method for resolution of racemic thiamphenicol precursors and intermediates therefor |
| 07/26/1990 | WO1990008126A1 Resolution process |
| 07/24/1990 | US4943590 Antidepressants, stereospecific synthesis |
| 07/03/1990 | US4939295 Process for the preparation of intermediates for the synthesis of diltiazem |
| 06/20/1990 | EP0373583A2 Recovery of L-phenylalanine from its racemic mixtures |
| 06/19/1990 | US4935532 Hemiacetals |
| 06/05/1990 | US4931587 Process for the optical resolution of a racemic acid |
| 06/05/1990 | US4931557 Intermediates for cephalosporins |
| 06/05/1990 | US4931556 Method of resolving cis 3-amino-4-(2-(2-furyl)eth-1-yl)-methoxycarbonylmethyl-azetidin-2-one and malic acid salts thereof |
| 06/05/1990 | US4931184 Chromatographic separation |
| 05/08/1990 | US4923983 Method of resolving cis 3-amino-4-[2-(2-furyl)eth-1-yl]-1-methoxycarbonylmethyl-azetidin-2-one |