1β-Methyl-2-(5-substituted pyrrolidin-3-ylthio)carbapenems; 3. Synthesis and Antibacterial Activity of BO-2727 and Its Related Compounds

Abstract

The synthesis and biological activity of (1R, 5S, 6S)-2-[(3S, 5S)-5-substituted pyrrolidin-3-ylthio]6-[(R)-1-hydroxyethyl]-1-methyl-1-carbapen-2-em-3-carboxylic acid in which hydroxy-substituted aminoethyl, aminopropyl, and aminobutyl groups were introduced as substituents, are described. These derivatives showed potent antibacterial activity against Gram-positive and Gram-negative bacteria including P. aeruginosa. Among them, lenapenem (BO-2727, 7b), carrying an (R)-1-hydroxy-3-(N-methylamino)propyl group, was selected as a development candidate.