2,2,2-trichloroethyl (3S,5R,6S)-3-(bromomethyl)-3-methyl-4,7-dioxo-6-[(2-phenylacetyl)amino]-4λ4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 生成
2-[1,3-dioxo-4-(2-phenyl-acetylamino)-1,3-dihydro-1λ4-isothiazol-2-yl]-3-methyl-but-2-enoic acid 2,2,2-trichloro-ethyl ester