(3S,4R)-1-allyloxalyl-4-[(1R,3S)-3-methoxy-2-oxo-cyclohexyl]-3-[1-(S)-trimethylsilyloxy-2,2,2-trifluoroethyl]-2-azetidinone 在
对苯二酚 、
亚磷酸三乙酯 作用下,
反应 2.0h,
以58.8%的产率得到allyl (4S,8S,9R,10S)-4-methoxy-10-[1-(S)-trimethylsilyloxy-2,2,2-trifluoroethyl]-11-oxo-azatricyclo[7.2.0.0(3,8)]undec-2-ene-2-carboxylate