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(2007/10/02)diphenylmethyl 7α-benzoylamino-3β-phenylseleno-3α-chloromethyl-1-oxacepham-4α-carboxylate
diphenylmethyl 7α-benzoylamino-3-methylene-1-oxacepham-4α-carboxylate
benzenesulfenyl chloride
diphenyldisulfane
methyl 7α-benzoylamino-3β-phenylthio-3α-chloromethyl-1-oxacepham-4α-carboxylate
diphenylmethyl 7α-benzoylamino-3-chloromethyl-1-oxa-3-cephem-4-carboxylate
(2S,3S,7R)-7-Benzoylamino-3-chloromethyl-8-oxo-3-phenylsulfanyl-5-oxa-1-aza-bicyclo[4.2.0]octane-2-carboxylic acid
diphenylmethyl 7α-benzoylamino-3β-phenylthio-3α-(1-methyl-1H-tetrazol-5-yl)thiomethyl-1-oxacepham-4α-carboxylate