(3s,4r)-1-[Allyloxycarbonyl(triphenylphosphoranylidene)methyl]-3-[(1r)-1-hydroxyethyl]-4-[(1r)-1-methyl-2-[7-(pyridin-3-yl)carbonylimidazo[5,1-b]thiazol-2-yl]-2-oxoethyl]azetidin-2-one 在
silica gel 、
甲醇乙酸乙酯 、
正己烷 、
乙酸乙酯 作用下,
以
甲苯 为溶剂,
反应 2.0h,
以ethyl acetate=1:1 solution to give 0.38 g of allyl (1S,5R,6S)-6-[(1R)-1-hydroxyethyl]-2-[7-(pyridin-3-yl)carbonylimidazo[5,1-b]thiazol-2-yl]-1-methylcarbapen-2-em-3-carboxylate的产率得到allyl (1S,5R,6S)-6-[(1R)-1-hydroxyethyl]-2-[7-(pyridin-3-yl)carbonylimidazo[5,1-b]thiazol-2-yl]-1-methylcarbapen-2-em-3-carboxylate