p. 2184 - 2191
(2007/10/02)(5R,6S)-6-[(R)-1-hydroxyethyl]-3,7-dioxo-1-azabicyclo[3.2.0]heptane-2-carboxylic acid p-nitrobenzyl ester
cis-4-mercaptocyclohexanecarboxylic acid
p-nitrobenzyl (6S)-<(1R)-hydroxyethyl>-2-
cis-4-(triphenylmethylthio)-1-(p-nitrobenzyloxycarbonylamino)cyclohexane
cis-4-(triphenylmethylthio)cyclohexanecarbonyl azide