| Patents for C07B 57 - Separation of optically-active organic compounds (3,737) |
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| 03/24/1993 | EP0532515A1 Preparation of substituted piperidines. |
| 03/23/1993 | US5196607 4-dichlorophenyl-3,4-dihydro-1(2H)-naphthalenone from ephedrine and dichlorocinnamoyl chloride |
| 03/18/1993 | WO1993005004A1 Novel compound and separating agent |
| 03/17/1993 | EP0494967A4 Chiral separation media |
| 03/16/1993 | CA1314559C Conversion of pyrethroid isomers to more active species |
| 03/10/1993 | EP0530657A1 Process for the separation of enantiomers of 5-hetaryl-1,3,4-thiadiazinone |
| 03/10/1993 | EP0530336A1 Chiral phosphines. |
| 03/10/1993 | EP0530286A1 Process for the stereoselective preparation of phenylisoserin derivatives. |
| 03/09/1993 | US5192444 Separating with an agent comprising an aliphatic ester of a polysaccharide |
| 03/09/1993 | CA1314291C Optically active tetrahydro-2-furanone derivative as microbicide |
| 03/04/1993 | WO1993004022A1 Recovery of optical isomer and solvent in optical resolution, reuse of solvent by recycling, and reuse of optical isomer |
| 03/04/1993 | WO1993000330A3 Azanorbornane derivatives |
| 03/03/1993 | EP0529835A2 Optical resolution of (+/-)-2-(4-isobutylphenyl) propionic acid |
| 03/03/1993 | CA2077031A1 Process for the resolution of enantiomers of 5-heteroaryl-1,3,4-thiadiazinones |
| 02/24/1993 | CA2074932A1 Optical resolution of (+)-2-(4-isobutylphenyl) propionic acid |
| 02/23/1993 | US5189208 Ibuprofen resolution |
| 02/23/1993 | CA1313880C Packing material for liquid chromatography |
| 02/17/1993 | EP0527235A1 Novel polysaccharide drivative and separating agent |
| 02/17/1993 | EP0527234A1 Separating agent |
| 02/10/1993 | EP0527069A1 Derivatives of pyrrolidine and thiazolidine, their preparation, and pharmaceutical compositions containing them |
| 02/10/1993 | CN1068823A Hypoglycemic thiazolidinediones and intermediates |
| 02/10/1993 | CN1068734A Therapeutic agent |
| 02/09/1993 | US5185463 Process for the preparation of an antiviral agent |
| 02/04/1993 | WO1993002079A1 Hypoglycemic thiazolidinediones and intermediates |
| 01/27/1993 | EP0524777A1 Process to isolate carbacephem intermediates |
| 01/24/1993 | CA2074058A1 Process to isolate carbacephem intermediates |
| 01/21/1993 | WO1993001190A1 Novel 2-amino naphthyridine derivative, its preparation and use |
| 01/21/1993 | WO1993001167A1 Pyrrolidine and thiazolidine derivatives, preparation thereof and drugs containing same |
| 01/21/1993 | WO1993001156A1 Ibuprofen resolution |
| 01/21/1993 | CA2111971A1 Ibuprofen resolution |
| 01/13/1993 | EP0522969A1 2-Aminonaphthyridine, its preparation and use |
| 01/07/1993 | WO1993000330A2 Azanorbornane derivatives |
| 01/07/1993 | EP0521496A2 Process for producing optically active carboxylic acids |
| 01/07/1993 | CA2111335A1 Azanorbornane derivatives |
| 01/05/1993 | US5177257 Racemic separation, quinine salt formation |
| 01/05/1993 | CA2073122A1 Process for the preparation of optically active carboxylic acids |
| 12/30/1992 | EP0520406A1 Diastereomer salt of optically active quinolinemevalonic acid |
| 12/30/1992 | EP0520391A2 Chemical modification method of a diastereomer and separation method thereof |
| 12/30/1992 | EP0520242A1 Optically active sulfur-containing aminoacid derivatives, their preparation, polymerisation into optically active polymers and use |
| 12/16/1992 | CN1067055A Crystallizing acid addition salt of 3-cephem-4-carboxylic acid-1-(2,2-dimethylpropionyloxy) ethyl ester non-emantiomorph |
| 12/09/1992 | EP0516686A1 Separation by carrier mediated transport. |
| 12/02/1992 | EP0515541A1 METHOD FOR PREPARING CIS--g(b)-PHENYLGLYCIDIC-(2R,3R) ACID. |
| 12/01/1992 | US5167824 Immunochemically reversible binding by protein; resolution of naproxen ester enantiomers |
| 11/26/1992 | WO1992020334A1 Pharmaceutical composition comprising ibuprofen salt |
| 11/25/1992 | EP0514791A2 Crystalline acid addition salts of both diastereomers of the 1-(2,2-dimethylpropionyloxy)-ethylester of 3-cephem-4-carboxylic acid |
| 11/24/1992 | US5166426 Converting a nitrile salt to hydroxide, reacting with acetyl proline, separation and resolution, saponification |
| 11/24/1992 | US5166417 Chemical intermediates formed by salt formation with 1-(3-methoxyphenyl)ethylamine and racemization by forming acid chlorides |
| 11/17/1992 | US5164519 Crystallization |
| 11/17/1992 | CA1310316C PROCESS FOR RESOLUTION AND RACEMIZATION OF AMINES WITH ACIDIC .alpha.-HYDROGENS |
| 11/12/1992 | DE4115291A1 Immobilised chiral polymers with chemically bonded metal - useful in chromatographic separations and analyses or in nuclear resonance analysis |
| 11/10/1992 | US5162576 Forming Salt With Cinchonidine |
| 11/04/1992 | WO1992019684A1 N-aminopyridone dyes |
| 11/04/1992 | EP0511558A2 Process for the resolution of racemates and associates of diastereoisomers |
| 11/04/1992 | CA2106779A1 N-aminopyridone dyes |
| 10/29/1992 | WO1992018455A1 Resolution of ketoprofen |
| 10/28/1992 | EP0510168A1 Chiral hydantoin resolution. |
| 10/14/1992 | EP0508307A2 Optically active secondary amine compound; process for producing optically active secondary amine compound and process for producing optically active carboxylic acid by using said compound |
| 10/14/1992 | EP0508133A2 Method of preparation of L-Carnitine from D,L-Carnitine nitrile salts |
| 10/14/1992 | CN1065270A Process for preparation of enantiomerically pure thienopyran derivatives |
| 10/14/1992 | CN1065265A Optically active aminoketone derivative and method for preparing same |
| 10/13/1992 | CA2065806A1 Process for the production of l-carnitine from d, l-carnitinenitrile salts |
| 10/01/1992 | WO1992016536A1 Chiral phosphines |
| 10/01/1992 | WO1992016274A1 Enantiomer separating process on chiral separation phases by means of a continuous counter-current chromatography process |
| 09/22/1992 | US5149426 Stationary phase for enantiomeric resolution in liquid chromatography |
| 09/17/1992 | WO1992015617A1 Separating agent |
| 09/17/1992 | WO1992015616A1 Novel polysaccharide drivative and separating agent |
| 09/02/1992 | EP0501912A1 Methyldioxolane |
| 09/02/1992 | EP0501870A1 New pharmaceutical compositions, particularly for the treatment of functional infections of the large intestines, and process for obtaining them |
| 09/02/1992 | EP0501713A1 Optically active aminoketone derivative and method for preparing same |
| 09/02/1992 | CN1064079A Steroids |
| 09/01/1992 | US5144077 Process for working up the crystallization mother liquor from the resolution of the racemate of 1-(4-chlorophenyl)-ethylamine |
| 09/01/1992 | CA1306988C Separation medium |
| 08/27/1992 | CA2061785A1 Optically active aminoketone derivative and method for preparing |
| 08/25/1992 | US5142046 Optically active pyridobenzoxazine derivatives and intermediates thereof |
| 08/25/1992 | US5142038 Precipitation using methyl tert-butyl ether or methanol |
| 08/20/1992 | WO1992013872A1 Novel steroids |
| 08/20/1992 | WO1992013823A1 Aminoalcohols useful as optical resolving agents |
| 08/20/1992 | CA2103924A1 Novel steroids |
| 08/20/1992 | CA2103586A1 Aminoalcohols useful as optical resolving agents |
| 08/19/1992 | EP0499376A1 Precipitation-induced asymmetric transformation of chiral alpha-amino acids and salts thereof |
| 08/11/1992 | US5138060 Process and intermediates for preparing azabicyclo(2.2.2)octan-3-imines |
| 08/11/1992 | US5137638 Separation agent comprising acyl- or carbamoyl-substituted polysaccharide |
| 08/05/1992 | CN1063285A Process for preparation of (6s)-and (6r)- tetrahydrofolic acid |
| 08/05/1992 | CN1017705B Preparation method of optically-active cotton phenol |
| 08/01/1992 | CA2060051A1 Precipitation-induced asymmetric transformation of chiral alpha-amino acids and salts thereof |
| 07/29/1992 | EP0495903A1 Separation of mixtures by two-phase systems |
| 07/23/1992 | WO1992012180A1 Cyclodextrin-epichlorohydrin polymers for separating and adsorbing substances |
| 07/23/1992 | WO1992012135A1 (-)-[[4-(1,4,5,6-tetrahydro-4-methyl-6-oxo-3-pyridazinyl)phenyl]-hydrazono]propanedinitrile |
| 07/22/1992 | EP0495204A1 Process for the preparation of (6S)- and (6R)-tetrahydrofolic acid |
| 07/22/1992 | EP0494967A1 Chiral separation media |
| 07/14/1992 | US5130252 Esterification and enzymatic hydrolysis to form the enantiomer |
| 07/07/1992 | US5128120 Quantitative determination of compounds in blood or urine |
| 07/04/1992 | WO1992012152A1 Process and intermediates for preparing azabicyclo[2.2.2]octan-3-imines |
| 07/01/1992 | EP0493048A1 The process for the preparation of enantiomerically pure thienopyran derivative |
| 07/01/1992 | EP0491887A1 Cyclic chiral compounds |
| 06/30/1992 | US5126071 Optically active compound, process for producing same and liquid crystal composition containing same |
| 06/30/1992 | US5126055 Continuous circulation of mixture containing isomers, solvents and desorption liquid over optical resolution packing |
| 06/23/1992 | CA1304080C Optically active pyridobenzoxazine derivatives and intermediates thereof |
| 06/22/1992 | CA2058148A1 Process for the preparation of enantiomerically pure thienopyran derivative |
| 06/17/1992 | EP0490175A1 Process for the treatment of the cristallization mother liquors of the resolution of 1-(4-chlorophenyl)ethylamine |