p. 2515 - 2526
(2007/10/02)p. 351 - 354
(2007/10/02)(R)-3-Hydroxymethyl-2-((1R,5S)-7-oxo-3-phenyl-4-oxa-2,6-diaza-bicyclo[3.2.0]hept-2-en-6-yl)-but-3-enoic acid benzhydryl ester
diphenylmethyl 7α-benzoylamino-3β-phenylseleno-3α-chloromethyl-1-oxacepham-4α-carboxylate
6-epipenicillin sulfoxide
(R)-3-Nitrooxymethyl-2-((1R,5S)-7-oxo-3-phenyl-4-oxa-2,6-diaza-bicyclo[3.2.0]hept-2-en-6-yl)-but-3-enoic acid benzhydryl ester
(R)-2-((1R,5S)-7-Oxo-3-phenyl-4-oxa-2,6-diaza-bicyclo[3.2.0]hept-2-en-6-yl)-3-phenylsulfanylmethyl-but-3-enoic acid benzhydryl ester
diphenylmethyl 7α-benzoylamino-3β-methylthio-3α-chloromethyl-1-oxacepham-4α-carboxylate
3-methylene-1-oxacepham methyl ester
(6R,7R)-7-Benzoylamino-3-chloromethyl-8-oxo-5-oxa-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester
diphenylmethyl 7α-benzoylamino-3-chloromethyl-1-oxa-3-cephem-4-carboxylate
diphenylmethyl 7α-amino-3α-(1-methyl-1H-tetrazol-5-yl)-thiomethyl-3β-methylthio-1-oxacephan-4α-carboxylate