Pivaloyloxymethyl 5R,6S-6-[1R-(Dimethyl-t-butylsilyloxy)ethyl]-2-(1R-oxo-3S-thiolanylthio)-2-penem-3-carboxylate 、
水 生成 2,2-dimethylpropanoyloxymethyl (5R,6S)-6-[(1R)-1-hydroxyethyl]-7-oxo-3-[(1R,3S)-1-oxothiolan-3-yl]sulfanyl-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate