专利号:EP-0842924-B1 优先权日:1996-11-14 标 题 :Pyridine intermediates, useful in the synthesis of beta-adrenergic receptor agonists 发明人:WRIGHT STEPHEN WAYNE 权利人:PFIZER 摘要:The present invention relates to certain compounds of the formula (I), which are useful in the synthesis of certain beta -adrenergic receptor agonists. The invention also relates to a process for synthesizing the compounds of formula (I) and to compounds of the formula (II), wherein R<1>, R<2> and R<4> are defined herein, which are useful in the synthesis of the compounds of formula (I). The invention also relates to a process for synthesizing a compound of formula (II). The invention further relates to processes for synthesizing compounds of formula (Z*), R<1>, R<2> and Y<2*> are defined herein.o
专利号:US-2005192445-A1 优先权日:2004-03-01 标题:Semi-synthesis of taxane intermediates and aziridine analogues and their conversion to paclitaxel and docetaxel 发明人:NAIDU RAGINA 权利人:PHYTOGEN LIFE SCIENCES INC 摘要:A process is provided for the semi-synthesis of taxane intermediates and aziridine analogues of cephalomannne and baccatin III intermediates, and the conversion of such intermediates and analogues to paclitaxel and docetaxel.
专利号:US-11512062-B2 优先权日:2018-10-15 标 题:Process for the synthesis of piperazinyl-ethoxy-bromophenyl derivates and their application in the production of compounds containing them 发明人:BEAUREGARD LOUIS-PHILIPPE; BERTRAND MARTIAL; GIGUERE PASCALL; HARDOUIN CHRISTOPHE; SCHIAVI BRUNO 权利人:SERVIER LAB 摘要:Process for the industrial synthesis of the compound of formula (I):
专利号:US-7585986-B2 优先权日:2004-02-24 标题 :Semi-synthesis of taxane intermediates and aziridine analogues and their conversion to paclitaxel and docetaxel 发明人:NAIDU RAGINA 权利人:CHATHAM BIOTEC LTD 摘要:A process is provided for the semi-synthesis of taxane intermediates and aziridine analogues of cephalomannine and baccatin III intermediates, and the conversion of such intermediates and analogues to paclitaxel and docetaxel.
专利号:US-2003032817-A1 优先权日:2001-05-15 标题:Process for the synthesis of oxandrolone 发明人:CABAJ JOHN E; KAIRYS DAVID L; ZIZELMAN PAUL M 摘要:A process is disclosed for synthesizing oxandrolone 1 involving the bromination of compound 2 to obtain compound 3, followed by the highly selective de-bromination of compound 3 to obtain compound 4, followed by the oxidation of compound 4 to obtain compound 6, and finally the reduction of compound 6 to obtain oxandrolone 1.
专利号:US-6958145-B2 优先权日:2000-06-28 标 题:Synthesis of cyclic compounds 发明人:KUMAR NARESH; READ ROGER WAYNE 权利人:UNISEARCH LTD 摘要:A method for the preparation of a compound of formula (II) wherein R 1 and R 2 are independently H, alkyl, alkoxy, oxoalkyl, alkenyl, aryl or arylalkyl whether unsubstituted or substituted, optionally interrupted by one or more hetero atoms, straight chain or branched chain, hydrophilic, hydrophobic or fluorophilic; R 3 , R 4 , R 5 and R 6 are independently or all hydrogen or halogen; provided that at least two of the R 3 , R 4 , R 5 and R 6 are halogens.