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31.发明授权17-beta-lactones of 14-beta-hydroxy-steroids and process for preparing them 失效14-β-羟基甾体的17-BETA-LACTONES及其制备方法
公开(公告)号：US3560487A
公开(公告)日：1971-02-02
申请号：US3560487D
申请日：1969-03-19
Applicant: HOECHST AG
Inventor： KOHL HANS , FRITSCH WERNER , HAEDE WERNER , RADSCHEIT KURT , STACHE ULRICH
IPC: C07J19/00 , B01J25/02 , C07C173/02
CPC classification number: B01J25/02 , Y02P20/582
Abstract: 17 B-LACTONES OF 14 B-HYDROXY STEROIDS ARE PREPARED BY REACTING CARDA-14,20 (22)-DIENOLIDES OR BUFA-14,20,22-TRIENOLIDES OR THE CORRESPONDING >4-DERIVATIVES WITH N-BROMO ACYL AMIDES, THE RESULTING 15 A-BROMO-14 B-HYDROXY DERIVATIVES ARE TREATED WITH RANEY NICKEL IN AN ORGANIC SOLVENT AT ROOM TEMPERATURE AND THE 3-OXO GROUPS ARE REDUCED WITH A METAL HYDRIDE COMPLEX.
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32.发明授权Process for the preparation of 14beta-hydroxy-3-keto-5beta-card-20(22)-enolides 失效制备14BETA-羟基-3-酮酯-5-CARD-20（22） - 酚的方法
公开(公告)号：US3535314A
公开(公告)日：1970-10-20
申请号：US3535314D
申请日：1968-01-03
Applicant: HOECHST AG
Inventor： FRITSCH WERNER , STACHE ULRICH , HAEDE WERNER , RADSCHEIT KURT
IPC: C07D20060101 , C07J19/00 , C07C173/02
CPC classification number: C07J75/00
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