Aminoalkyl- or hydroxyalkyl-substituted thiadiazole derivatives
申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04077965A1
公开(公告)日:1978-03-07
Compounds of the formula ##STR1## and its salts, wherein A is lower alkylene, and R is optionally acyl or lower alkoxy carbonyl substituted amino or optionally acyl substituted hydroxy. The compounds are useful as intermediates in making cephalosporin derivatives.
Cephalosporanic acid derivatives and preparation thereof having the following formula ##STR1## wherein R.sub.1 is hydrogen or acyl, and R.sub.2 is aminoalkyl-, acylaminoalkyl-, sulfoalkylaminoalkyl-, or hydroxyalkyl-substituted, N- or N and S-containing heterocyclic groups.