Synthesis and beta-lactamase inhibitory activity of new 6beta-cysteinesulfonamidopenicillanic acids.

Abstract

New 6beta-cysteinesulfonamidopenicillanic acids and their sulfoxides were synthesized by sulfonylation of 6beta-aminopenicillanic acid or its (S)-sulfoxide with (R)-N-benzyloxycarbonylcysteinesulfonyl chloride ethyl ester (2a, 1b) and (R)-N-benzyloxycarbonylcysteinesulfonyl chloride benzyl ester (2a, 2b). The corresponding 6beta… (More)

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