Diastereomeric 5R,6S-6-(1R-hydroxyethyl)-2-(1S-oxo-3R-thiolanylthio)-2-penem-3-carboxylic acid and 5R,6S-6-(1R-hydroxyethyl)-2-(1R-oxo-3S-thiolanylthio)-2-penem-3-carboxylic acid, and pharmaceutically-acceptable salts and in vivo hydrolyzable esters thereof, useful as systemic antibacterial agents; and intermediates and processes which are useful in the said synthesis of said diastereoisomers.
两种对映异构体5R,6S-6-(1R-羟乙基)-2-(1S-氧代-3R-
硫代基
硫基)-2-青霉烷-3-
羧酸和5R,6S-6-(1R-羟乙基)-2-(1R-氧代-3S-
硫代基
硫基)-2-青霉烷-3-
羧酸及其药学上可接受的盐和体内可
水解酯,用作系统性抗菌剂;以及在所述两种对映异构体的合成中有用的中间体和过程。