(2S,3S,7R)-3-Chloro-7-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-3-methyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]octane-2-carboxylic acid methyl ester 在
乙醇 作用下,
生成 (6R)-3t-hydroxy-3c-methyl-8-oxo-7t-phthalimido-(6rH)-5-thia-1-aza-bicyclo[4.2.0]octane-2c-carboxylic acid methyl ester 、
(2R,3S,7R)-7-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-3-ethoxy-3-methyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]octane-2-carboxylic acid methyl ester