发明名称 |
FORFARANDE FOR FRAMSTELLNING AV 7BETA-AMINO-3CEFEM-3OL-4-KARBOXYLSYRADERIVAT |
摘要 |
1503581 Preparation of ceph-2- or -3-em derivatives CIBA-GEIGY AG 24 Feb 1975 [26 Feb 1974 5 June 1974 12 Aug 1974] 7625/75 Heading C2C Compounds IA and IB (R 1 <SP>a</SP> is H or a protecting group; R 1 b is H or acyl; or R 1 <SP>a</SP> and R 1 <SP>b</SP> together form a divalent protecting group; R 2 is OH or a group which with the adjacent -CO- group forms protected carboxyl; and R 3 is H, 1-7C alkyl or a protecting group) and the 1-oxides of the ceph- 3-em compounds are prepared by cyclization of a compound II followed, where necessary, by deprotection and/or other conventional modifications. |
申请公布号 |
SE431652(B) |
申请公布日期 |
1984.02.20 |
申请号 |
SE19750001317 |
申请日期 |
1975.02.06 |
申请人 |
CIBA-GEIGY AG |
发明人 |
R B * WOODWARD;H * BICKEL |
分类号 |
C07D205/08;C07D205/095;C07D413/12;C07D417/12;C07D501/04;C07D501/08;C07D501/10;C07D501/59;C07D501/60;(IPC1-7):07D501/08;07D501/59;07D501/60 |
主分类号 |
C07D205/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|