3-(SUBSTITUTED)-1-CARBA (DETHIA)-3-CEPHEMS AND CEPHALOSPORINE AND PRODUCTION THEREOF

摘要

Cephalosporin and 1-carba(1-dethia)cephalosporin antibiotics substituted in the 3-position with, inter alia, alkyl, alkenyl and alkynyl, are provided via process comprising conversion of a cephalosporin or 1-carba(1-dethia)-3-cephem substituted in the 3-position with halogen or a sulfonyloxy ester with Pd(O) mediated alkylation with organostannanes.