p. 2184 - 2191
(2007/10/02)cis-3-(triphenylmethylthio)-1-(p-nitrobenzyloxycarbonylamino)cyclopentane
4-nitrobenzyl chloride
cis-3-mercapto-1-(p-nitrobenzyloxycarboxylamino)cyclopentane
(5R,6S)-6-[(R)-1-hydroxyethyl]-3,7-dioxo-1-azabicyclo[3.2.0]heptane-2-carboxylic acid p-nitrobenzyl ester