Process for the preparation of .beta.-lactam compounds
申请人:Sankyo Company Limited
公开号:US04162251A1
公开(公告)日:1979-07-24
Alkoxylated .beta.-lactam compound useful as an intermediate for various cephalosporin (or penicillin) derivatives which may be prepared by reacting a 7-sulfenylaminocephem compound (or a 6-sulfenylaminopenam compound) with an oxidizing agent or reacting a sulfinylaminocephem compound (or a 6-sulfinylaminopenam compound) with a dehydrated agent to give a sulfenyliminocephem compound (or a 6-sulfenyliminopenam compound) and reacting the latter compound with an alcohol in the presence of a base, an organic acid or a Lewis acid.
Derivatives of 2-spirocyclopropyl cephalosporin sulfone of the structural formula I ##STR1## are provided which are useful as potent elastase inhibitors.