发明名称 |
PROCESS FOR PRODUCING NEW AZETIDINE DERIVATIVES |
摘要 |
Novel azetidine derivatives of the formula <IMAGE> I wherein R1 is an acylamido group, R2 is selected from the group consisting of <IMAGE> <IMAGE> <IMAGE> <IMAGE> IIA IIB IIC IID wherein R4, R5 and R6 are individually selected from the group consisting of hydrogen, lower alkyl and lower alkenyl, n is 2 or 3 and - in the case when formula IIB is a phenyl - this group may carry one to four substituents selected from the group consisting of halogen, lower alkyl, lower alkenyl and phenyl, and R3 is lower alkyl optionally substituted with 1 or 2 phenyls which phenyl groups may be substituted with nitro and the dotted lines of formula IIB indicate the optional presence of double bonds and a process for their preparation and process for the preparation of cephalosporanic acid derivatives using the azetidines of formula I as intermediates. |
申请公布号 |
HU172237(B) |
申请公布日期 |
1978.07.28 |
申请号 |
HU1975GI00210 |
申请日期 |
1975.02.07 |
申请人 |
GIST-BROCADES NV,NL |
发明人 |
VERWEIJ,JAN,NL;TAN,HONG SHENG,NL |
分类号 |
C07D205/08;A61K31/545;C07D201/02;C07D205/095;C07D207/46;C07D209/48;C07D401/12;C07D403/12;C07D501/08;C07D501/10;C07D501/30;C07D501/60 |
主分类号 |
C07D205/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|