| Patents for C07B 53 - Asymmetric syntheses (6,231) |
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| 01/21/2003 | US6508753 Chiral ligands for asymmetric catalysis |
| 01/16/2003 | WO2003005010A2 Method for producing optically active cyanohydrins |
| 01/16/2003 | WO2003004456A1 Process for the preparation of 7-amino syn 3,5-dihydroxy heptanoic acid derivatives via 6-cyano syn 3,5-dihydroxy hexanoic acid derivatives |
| 01/16/2003 | WO2003004455A2 Process for the preparation of 7-amino syn 3,5-dihydroxy heptanoic acid derivatives, intermediates thereof and methods for their preparation |
| 01/16/2003 | WO2003004450A1 Process for the preparation of intermediates useful in the synthesis of statin derivatives especially 7-amino 3,5-dihydroxy heptanoic acid derivatives, and intermediates thereof |
| 01/16/2003 | WO2003004157A2 Optically active catalysts containing a salen ligand and vanadium (iv), production thereof and use of the same for producing cyanohydrins |
| 01/16/2003 | WO2003003972A2 Kinetic resolution of a intermediate useful in the production of benazepril and analogues thereof |
| 01/16/2003 | WO2002041984A3 Catalytic compositions and methods for asymmetric aldol reactions |
| 01/16/2003 | US20030013892 Production of chirally pure alpha-amino acids and N-sulfonyl alpha-amino acids |
| 01/16/2003 | CA2453211A1 Process for the preparation of 7-amino syn 3,5-dihydroxy heptanoic acid derivatives, intermediates thereof and methods for their preparation |
| 01/16/2003 | CA2451159A1 Process for the preparation of 7-amino syn 3,5-dihydroxy heptanoic acid derivatives via 6-cyano syn 3,5-dihydroxy hexanoic acid derivatives |
| 01/16/2003 | CA2448917A1 Process for the preparation of intermediates useful in the synthesis of statin derivatives especially 7-amino 3,5-dihydroxy heptanoic acid derivatives, and intermediates thereof |
| 01/15/2003 | EP1275641A2 Benzenesulfonamide derivatives, process for their preparation and pharmaceutical compositions containing them |
| 01/15/2003 | EP1274666A1 Increasing enantioselectivity in reductions with borane reagents |
| 01/15/2003 | CN1098856C amidophosphinephosphinite compounds |
| 01/15/2003 | CN1098840C Dinaphtazepinium salts useful as enantioselective epoxidation catalysts |
| 01/14/2003 | US6506800 For control of insect and acarid pests |
| 01/14/2003 | US6506733 Compounds and compositions as protease inhibitors |
| 01/09/2003 | WO2003002582A1 New chiral salen catalyst and methods for the preparation of chiral compounds from racemic epoxides by using new catalyst |
| 01/09/2003 | WO2003002255A1 Hydroxylation of beta-dicarbonyls with zirconium catalysts |
| 01/09/2003 | WO2001068637A3 Method for the preparation of tetrahydrobenzothiepines |
| 01/08/2003 | EP1272452A2 Process for the preparation of (r)-2-bromo-3-phenyl-propionic acid |
| 01/08/2003 | EP1124833B1 Diphosphines |
| 01/07/2003 | US6504066 Reduction of halogen containing carbocyclic ketones, to form chemical intermediates which are substance-P receptor antagonists useful as antiinflammatory and antiemetic agents and for treatment of psychological disorders |
| 01/07/2003 | US6503713 Methods for identifying RNA binding compounds |
| 01/07/2003 | CA2052912C Process for producing optically active amines |
| 01/03/2003 | WO2003000698A1 β-BENZYLOXYASPARTATE DERIVATIVES WITH AMINO GROUP ON BENZENE RING |
| 01/02/2003 | US20030004362 Asymmetric reduction of a beta-keto ester in the presence of a ruthenium-diamine complex |
| 01/02/2003 | EP1268496A1 Water soluble chiral diphosphines |
| 01/02/2003 | EP1268368A2 Catalytic asymmetric desymmetrization of meso compounds |
| 01/02/2003 | EP1149068A4 A process for preparing (r)-4-cyano-3-hydroxybutyric acid ester |
| 01/01/2003 | CN1388119A Stereoselective preparation for chirality 1-aryl-and 1-heteroaryl-2-substituted-ethyl-2-amine |
| 01/01/2003 | CN1097591C Process for preparing pyrimidine derivatives |
| 12/31/2002 | US6500989 Catalytic hydrogenation of carvoxime using such as palladium on barium sulphate support poisoned by red lead oxide and carboxylic acid to neutralize ammonia byproduct; purification with a metal alkoxide; minimizing formation of hydroxy |
| 12/31/2002 | US6500959 Pyrrolidine derivatives and processes for preparing same |
| 12/27/2002 | WO2002102764A2 Method for producing chiral amino acid derivatives |
| 12/27/2002 | WO2002102707A2 Transition metal oxo, sulfido and amido complexes as catalysts of nucleophilic addition reactions |
| 12/27/2002 | WO2002036261B1 Catalyst comprising a chiral cationic metal-ligand complex immobilised on a mesoporous alumino-silicate support, its preparation and use in asymmetric hydrogenation |
| 12/26/2002 | US20020198383 For use in regioselective and enantioselective alkylations of allylic substrates |
| 12/26/2002 | US20020198156 Asymmetric synthesis of (S,S,R)-(-)-actinonin and its analogs and uses therefor |
| 12/25/2002 | CN1097049C Processes for preparing intermediate product used in method of diastereoselective synthesis of nucleosides |
| 12/24/2002 | US6498256 Catalysts for asymmetric addition reactions, for example of hydrogen, to prochiral unsaturated organic compounds. |
| 12/19/2002 | WO2002101003A2 Stereoselective preparation of cyclic l-amino acids |
| 12/19/2002 | US20020193347 Using an optically active N-substituted chiral derivative of norephedrine as ligand for enantioselective reduction of unsaturated compounds carrying functional groups by a hydrogen transfer method |
| 12/18/2002 | EP1265835A1 Process for obtaining [1,2,3,5,6,7,8,8a-octahydro-1,2,8,8tetramethylnaphthalen-2-yl]ethan-1-one |
| 12/17/2002 | US6495729 (+)- and (−)-2-cyclododecylpropanol and (+)- and (−)-2-cyclododecylpropionic acid and the preparation and use thereof |
| 12/17/2002 | US6495725 Useful as chemical intermediates for prostaglandins and drugs |
| 12/17/2002 | US6495713 Reacting pivaloyl chloride with hydroxyketosulfide compound and trialkylamine in the presence of a catalyst in a substantially non-reactive solvent to form ketoester sulfide compound; oxidizing to form ketoester sulfone compound |
| 12/17/2002 | US6495711 Process for preparing (-)-(1S, 4R) N-protected 4-amino-2-cyclopentene-1-carboxylate esters |
| 12/12/2002 | WO2002098854A2 Process for preparing chiral diol sulfones and dihydroxy acid hmg coa reductase inhibitors |
| 12/12/2002 | WO2002055195A3 Asymmetric ruthenium hydrogenation catalysts and processes |
| 12/12/2002 | US20020188123 Polydentate asymmetric ligands based on binaphthyl |
| 12/12/2002 | US20020187992 Prodrugs via acylation with cinnamate |
| 12/12/2002 | US20020187942 Method for producing beta-D-ribofuranose derivatives or optical isomers thereof |
| 12/12/2002 | CA2449813A1 Process for preparing chiral diol sulfones and dihydroxy acid hmg coa reductase inhibitors |
| 12/11/2002 | EP1263735A1 Acid addition salts of imidazolidinones as reaction catalysts |
| 12/10/2002 | US6492562 Invention also relates to novel intermediates and the resulting modified polyketides and antibiotics. |
| 12/10/2002 | US6492545 Process for producing optically active alcohol |
| 12/10/2002 | US6492544 Process for synthesis of enantiomerically enriched β-amino acids |
| 12/10/2002 | US6492522 Process and intermediates for production of donepezil and related compounds |
| 12/05/2002 | WO2002096899A1 Synthesis of cannabinoids |
| 12/05/2002 | WO2002096898A2 Process for the preparation of prostaglandins and analogues thereof |
| 12/05/2002 | US20020183535 Metal catalysts and methods for making and using same |
| 12/05/2002 | US20020183515 Asymmetric synthesis of a key intermediate for making benazepril and analogues thereof |
| 12/05/2002 | US20020183352 Antidepressant indoletetrahydropyridine derivatives of 2,3-dihydro-7H-[1,4]dioxino[2,3-e]indole |
| 12/05/2002 | CA2448088A1 Process for the preparation of prostaglandins and analogues thereof |
| 12/04/2002 | EP1261573A2 Asymmetric ligands having use as catalysts |
| 12/04/2002 | EP1100769B1 Aminomethylcarboxylic acid derivatives |
| 12/04/2002 | CN1382677A Preparing method for 3-e Menthyloxy -1,2-propanediol |
| 11/28/2002 | WO2002094849A2 Process for the production of 6, 7 - dihydroxy steroid compounds by allylic oxidation of steroid - 5 - ene compounds to steroid - 5 - ene - 7 - one compounds followed by hydroboration and oxidation and intermediates of this process |
| 11/28/2002 | WO2002094761A1 Stereoselective synthesis of 2-hydroxy-4-phenylbutyric acid esters |
| 11/28/2002 | WO2002012155A3 Process for the preparation of chiral 1,4-diaryl-2-fluoro-2-butenes |
| 11/28/2002 | CA2447780A1 Process for the production of 6, 7 - dihydroxy steroid compounds by allylic oxidation of steroid - 5 - ene compounds to steroid - 5 - ene - 7 - one compounds followed by hydroboration and oxidation and intermediates of this process |
| 11/28/2002 | CA2447230A1 Stereoselective synthesis of 2-hydroxy-4-phenylbutyric acid esters |
| 11/27/2002 | EP1260516A1 Method for producing a beta-D-ribofuranose derivative or an optical isomer thereof |
| 11/27/2002 | EP1214328A4 Chiral phosphines, transition metal complexes thereof and uses thereof in asymmetric reactions |
| 11/27/2002 | CN1382135A Amine and amide derivatives as ligands for neuropeptide YY5 receptor usefu in treatment of obesity and other disorders |
| 11/27/2002 | CN1382121A C16 unsaturated FP-selective prostaglandins analogs |
| 11/26/2002 | US6486355 Application of chiral critical clusters to assymetric synthesis |
| 11/21/2002 | WO2002092572A1 Method for preparation of (s)-(+)- and (r)-(-)-10,11-dihydro-10-hydroxy-5h-dibenz/b,f/azepine-5-carboxamide |
| 11/21/2002 | WO2002092562A2 Enantioselective reactions using two-component chiral phase transfer catalysts in multiphasic systems |
| 11/21/2002 | WO2002092204A2 Method for activating and immobilizing cationic transition metal catalysts using ionic fluids and compressed co¿2? |
| 11/21/2002 | US20020173683 Activity of Ru(II) complexes as hydrogenation catalysts is enhanced by addition of Lewis base as cocatalyst |
| 11/21/2002 | DE10123467A1 Activation of cationic transition metal catalyst, useful in e.g. metathesis, oligomerization reaction, involves using ionic liquid and compressed carbon dioxide |
| 11/20/2002 | EP1258470A2 Process for producing optically active alcohol |
| 11/20/2002 | EP1257519A1 Chemical transformation of substrates using nonmetallic, organic catalyst compositions |
| 11/20/2002 | EP1257360A1 Chiral ferrocene phosphines and their use in asymmetric catalytic reactions |
| 11/20/2002 | EP1082328B1 Production of optically active phospholanes |
| 11/14/2002 | WO2002010151A3 Method for producing lipoic acid and dihydrolipoic acid |
| 11/14/2002 | DE10122539A1 Mehrzähnige unsymmetrische Liganden auf Binaphthylbasis Multidentate unsymmetrical ligands on Binaphthylbasis |
| 11/13/2002 | EP1256570A1 Polydentate asymmetric ligands based on biphenyl |
| 11/13/2002 | EP1255729A1 Preparation of nitrogen mustard derivatives |
| 11/13/2002 | CN1379748A Process for preparing optically active alpha-hydroxy acids and derivatives thereof |
| 11/12/2002 | US6479659 Improved process and novel intermediates to endothelin receptor antagonists |
| 11/07/2002 | WO2002088146A2 ANTIDEPRESSANT INDOLETETRAHYDROPYRIDINE DERIVATIVES OF 2,3-DIHYDRO-7H-[1,4]DIOXINO[2,3-e]INDOLE |
| 11/07/2002 | WO2002088047A1 Polymer-bound catalyst for the enantioselective cleavage of pro-chiral anhydrides |
| 11/07/2002 | US20020165408 Industrial process for the production of L-carnitine |
| 11/07/2002 | US20020165393 Kinetic resolutions of chiral 2- and 3-substituted carboxylic acids |
| 11/07/2002 | CA2445583A1 Antidepressant indoletetrahydropyridine derivatives of 2,3-dihydro-7h-[1,4]dioxino[2,3-e]indole |
| 11/06/2002 | EP1254159A2 Process for the preparation of acetyl-amidiniophenylalanyl-cyclohexylglycyl-pyridinioalaninamides |