(
R)-3-methyl-2-((1
S)-7-oxo-3-phenoxymethyl-(1
rH,5
cH)-4-thia-2,6-diaza-bicyclo[3.2.0]hept-2-en-6-yl)-but-3-enoic acid 2,2,2-trichloro-ethyl ester 在
三氟乙酸 作用下,
生成
(R)-3-methyl-2-(2-phenoxymethyl-thiazole-4-carbonylamino)-but-3-enoic acid 2,2,2-trichloro-ethyl ester