| Patents for C07B 53 - Asymmetric syntheses (6,231) |
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| 12/18/1997 | WO1997047628A1 Chiral organoboranes |
| 12/18/1997 | CA2258018A1 Asymmetric synthesis catalyzed by transition metal complexes with cyclic chiral phosphine ligands |
| 12/18/1997 | CA2257678A1 Chiral organoboranes |
| 12/16/1997 | US5698741 Hiv reverse transcriptase inhibitor |
| 12/10/1997 | EP0811630A2 Chiral compounds |
| 12/09/1997 | US5696254 Processes for the diastereoselective synthesis of nucleoside analogues |
| 12/03/1997 | EP0809647A1 Chiral organometallic compounds |
| 12/02/1997 | US5693820 Ruthenium complexes with a chiral, bidentate phosphine/oxazoline ligand for enantioselective transfer hydrogenation of prochiral ketones |
| 12/02/1997 | US5693816 Reacting sodium borohydride and boron trichloride with alpha-pinene; for reducing prochiral ketone to corresponding alcohol |
| 12/02/1997 | US5693805 Sulfonamidation of chlorosulfonylcamphor with piperazine derivative salt, oximation, reduction, selective amidation of endo amine isomer, salt formation; tocolytic agents |
| 12/02/1997 | US5693787 Stereospecific |
| 11/25/1997 | CA2134096C Enantioselective oxazaborolidine catalysts |
| 11/18/1997 | US5688990 Forming chemical intermediates for azetidinone compounds that inhibit cholesterol biosynthesis for prevention of atherosclerosis |
| 11/18/1997 | US5688985 Reacting n,n-dibenzylaminophenylalanine ester with acetonitrile in presence of an organometallic catalyst |
| 11/13/1997 | WO1997042186A1 Process for preparation of pyrimidine derivatives |
| 11/12/1997 | CN1164530A Amino alcohol derivative and method for preparing the same |
| 11/11/1997 | US5686616 Process for preparing an optically active amine |
| 11/11/1997 | US5686615 Stereoselective preparation of substituted piperidines |
| 11/04/1997 | US5684185 Process for the stereoselective synthesis of 3-substituted 2-sulfonylmethylpropionic acids, and intermediate products |
| 10/30/1997 | WO1997040008A1 Process for preparing pyrrolidine derivatives |
| 10/30/1997 | DE19617941A1 Novel chiral amphiphilic N-carbonyl-pyrrolidone ligands-prepared by simplified method and useful in preparing metal complexes which catalyse hydrogenation reactions in water |
| 10/30/1997 | DE19617939A1 Chiral amphiphilic compounds used as e.g. surfactants, emulsifiers or aqueous hydrogenation reaction auxiliary aids |
| 10/29/1997 | EP0803510A1 2,2'-Disubstituted 1,1'-diphosphino ferrocenes and 1',2'-disubstituted 1-phosphino ferrocenes, their preparation and use and transition metal complexes containing them |
| 10/29/1997 | EP0724552B1 Process for preparing a chiral tetralone |
| 10/22/1997 | EP0763005A4 TETRAHYDROINDENO[1,2-d][1,3,2]OXAZABOROLES AND THEIR USE AS ENANTIOSELECTIVE CATALYSTS |
| 10/21/1997 | US5679857 Subjecting amide formed from l-amino acid and optically active (s)-alpha-alkylbenzylamine to dehydration condensation with aryl aldehyde, racemizing in solvent containing base, hydrolyzing under acidic conditions |
| 10/21/1997 | CA2116464C Process for the preparation of an optically pure aminoalcohol |
| 10/15/1997 | EP0801057A1 Process for producing optically active trans-vinyl sulfide alcohols |
| 10/15/1997 | EP0594608B1 Chiral catalysts for enantioselective synthesis |
| 10/07/1997 | CA2009637C Substituted-1,3-oxathiolanes with antiviral properties |
| 10/02/1997 | WO1997035841A2 Method for obtaining pure enantiomers of a pyridazinone derivative |
| 09/25/1997 | WO1997034852A1 Cycloalkyl derivatives and the solid-phase synthesis of such derivatives |
| 09/25/1997 | CA2248600A1 Cycloalkyl derivatives and the solid-phase synthesis of such derivatives |
| 09/24/1997 | EP0796239A1 Process for the preparation of enantiomerically pure (s,s) aminoepoxides, key intermediates for hiv protease inhibitors, via their chlorohydrines |
| 09/23/1997 | US5670652 Method of producing optically active, 4-substituted (S)-2-oxazolidinones |
| 09/23/1997 | CA2069024C Processes for the diastereoselective synthesis of nucleosides |
| 09/18/1997 | DE19610103A1 Cycloalkylderivate und ihre Synthese an fester Phase Cycloalkyl derivatives and their synthesis on solid phase |
| 09/17/1997 | CN1159810A Novel process for the preparation of diisopinocampheylchloroborane |
| 09/11/1997 | DE19704273A1 Producing optically active alpha-hydroxy-ketone(s), useful in synthesis |
| 09/10/1997 | EP0794181A1 Asymmetric epoxidation using a titanium-containing zeolite and a chiral hydroperoxide |
| 09/10/1997 | CN1159185A Method for producing beta-amino alcohol |
| 09/10/1997 | CN1159184A Racemisation and asymmetric transformation process used in manufacture of levobupivacaine and analogues thereof |
| 09/09/1997 | US5665890 Chemical synthesis comprising reacting a nucleophile and a chiral or prochiral cyclic substrate |
| 09/02/1997 | US5663410 Cis-4-(2,2,3,3-tetrafluoropropoxy)-cinnamonitrile and trans-4-(2,2,3,3-tetrafluoropropoxy)-cinnamonitrile and a process for their preparation |
| 09/02/1997 | US5663384 Asymetric epoxidation using a titanium-containing zeolite and a chiral hydroperoxide |
| 09/02/1997 | US5663348 Reduction of diketone with aminoalkoxyborane complex to form dialcohol ester compound |
| 09/02/1997 | US5663320 Processes for the diastereoselective separation of nucleoside analogue synthetic intermediates |
| 08/27/1997 | EP0790998A1 Azo derivatives of 5-aminosalicylic acid for treatment of inflammatory bowel disease |
| 08/26/1997 | CA2124454C Process for preparing ketone enantiomer |
| 08/19/1997 | US5659085 Cyclobutenedione derivative, process for preparing the same, and nonlinear optical element |
| 08/19/1997 | US5659075 Multistep reaction using hindered hydroborating agent for stereospecific 4-amino-2-hydroxymethyl-1-cyclopentanol |
| 08/14/1997 | WO1997029086A1 Method for the asymmetrical synthesis of s-acylated derivatives of 2-mercaptomethyl 3-phenyl propanoic acid, and use thereof for synthesising n-(mercaptoacyl) amino acid derivatives |
| 08/13/1997 | EP0788472A1 A process for the preparation of 5,6-dihydroxy-2-amino-1,2,3,4-tetrahydronaphthalene derivatives |
| 08/07/1997 | WO1997028105A1 Processes for the reduction of carbonyl compounds |
| 08/07/1997 | CA2216537A1 Process for reduction of carbonyl compounds |
| 08/06/1997 | EP0787718A1 Process for preparing optically active 4-hydroxy-2-pyrrolidone |
| 08/06/1997 | EP0787115A1 PROCESS FOR PRODUCING DERIVATIVES OF 4a,5,9,10,11,12,-HEXAHYDRO-6H-BENZOFURO 3a,3,2-ef] 2]BENZAZEPINE |
| 08/06/1997 | CN1035555C Process for diastereoselective synthesis of nucleosides |
| 08/05/1997 | US5654338 Preparation of optically active α-(hydroxyphenoxy)alkanecarboxylic acids and derivatives thereof |
| 07/23/1997 | EP0785198A1 Method for the preparation of optically active 3-hydroxyquinuclidine |
| 07/15/1997 | US5648548 Hydrogenation |
| 07/15/1997 | CA2069063C Processes for the diastereoselective synthesis of nucleosides |
| 07/09/1997 | EP0782992A1 Amino alcohol derivative and method for preparing the same |
| 07/09/1997 | EP0782990A1 Process for the preparation of optically pure 1,2,3,4-Tetrahydro-3-isoquinoline-carboxylic acid and its derivatives |
| 07/09/1997 | EP0782569A1 Racemisation and asymmetric transformation processes used in the manufacture of levobupivacaine and analogues thereof |
| 07/02/1997 | EP0781750A2 Asymmetric synthesis of alpha-cycloalkylalkyl substituted methanamines |
| 07/02/1997 | EP0781749A2 Process for producing optically active benzhydrol compounds |
| 06/25/1997 | EP0780157A1 Ruthenium complex with chiral bidentate phosphinoxazolin ligands for the enantioselective transfer hydrogenation of prochiral cetons |
| 06/18/1997 | EP0778827A1 Process for producing a beta-amino alcohol |
| 06/18/1997 | EP0655994B1 Chemical process for preparing an optically active aminodiol |
| 06/17/1997 | US5639878 Reacting azetidinone derivative containing thio group with n-haloacylimide in the presence of an organic acid |
| 06/12/1997 | CA2192417A1 Asymmetric synthesis of ó-cycloalkylalkyl substituted methanamines |
| 06/11/1997 | CN1151735A Benzocycloalkylazolethione derivatives |
| 06/10/1997 | US5637701 Process for preparing optically active amide derivatives |
| 06/10/1997 | US5637624 Ring-substituted 2-amino-1,2,3,4-tetrahydronaphthalenes and 3-aminochromanes |
| 06/05/1997 | WO1997019920A1 Preparation of chiral 3-hydroxy-2-pyrrolidinone derivatives |
| 06/04/1997 | EP0631571B1 Preparation of optically active hydrazines and amines |
| 05/28/1997 | EP0775146A1 Novel process for the preparation of diisopinocampheylchloroborane |
| 05/28/1997 | EP0641330A4 Gaba and l-glutamic acid analogs for antiseizure treatment. |
| 05/28/1997 | EP0592552B1 Chiral phospholanes via chiral 1,4-diol cyclic sulfates |
| 05/27/1997 | US5633405 Reacting substituted norephedrine with cyclopropylacetylene and lithiating agent in aprotic solvent, mixing with aniline trifluoromethyl ketone, quenching with proton source |
| 05/27/1997 | US5633373 Enantioselective synthesis of antifolates |
| 05/21/1997 | EP0774452A1 Optically active compounds having plural chiral centers and the production thereof |
| 05/15/1997 | WO1997017342A1 A process of making 3-phenyl-1-methylenedioxyphenyl-indane-2-carboxylic acid derivatives |
| 05/15/1997 | WO1997017341A1 A process of making 3-phenyl-1-methylenedioxyphenyl-indane-2-carboxylic acid derivatives |
| 05/14/1997 | EP0773213A2 Method for the preparation of methyl (2RS,3RS)-3-(2'-aminophenylthio)-2-hydroxy-3-(4"-methoxyphenyl)propionate |
| 05/13/1997 | US5629423 Asymmetric synthesis of chiral secondary alcohols |
| 05/09/1997 | WO1997016421A1 Process for producing optically active trans-vinyl sulfide alcohols |
| 05/09/1997 | CA2209102A1 Production method of optically active trans-vinylsulfide alcohol |
| 05/06/1997 | US5627293 Hydrogenation of double and triple bonds after reaction of butyllithium with iron complex |
| 05/06/1997 | US5627282 Process for the preparation of optically pure 1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid and its derivatives |
| 05/06/1997 | US5627176 Substituted azetidinone compounds useful as hypocholesterolemic agents |
| 05/02/1997 | EP0770606A1 Cis-epoxide derivate useful as irreversible HIV protease inhibitor and process for its preparation |
| 05/02/1997 | EP0770057A1 Method for producing calcium salts of [s,s]-ethylenediamine-n,n'-disuccinic acid |
| 05/02/1997 | EP0770056A1 A process for producing [s,s]-ethylenediamine-n,n'-disuccinic acid |
| 05/02/1997 | EP0770054A1 A method for producing [s,s]-ethylenediamine-n,n'-disuccinic acid from its calcium salt |
| 04/29/1997 | US5625066 Optically active hydroquinine (amino-3 phenyl)-1 ethanesulfonate, preparation and use thereof |
| 04/29/1997 | US5625065 Stereoselective process for making endo-tropanamine and like compounds |
| 04/24/1997 | WO1997014669A1 Process for preparing optically active carboxylic acids |
| 04/24/1997 | WO1997014500A1 Chiral solid catalyst, its preparation and its use for the production of substantially enantiomerically pure products |