benzhydryl (6R,7R)-7-amino-7-methoxy-8-oxo-3-(2H-tetrazol-5-ylsulfanylmethyl)-5-oxa-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 、
difluoromethylthioacetyl chloride 生成 benzhydryl (6R,7R)-7-[[2-(difluoromethylsulfanyl)acetyl]amino]-7-methoxy-8-oxo-3-(2H-tetrazol-5-ylsulfanylmethyl)-5-oxa-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate