p. 1080 - 1092
(2007/10/03)azetidin-3-amine dihydrogen chloride
(2S,4S)-4-(4-methoxy-benzylthio)-1-methyl-2-pyrrolidinecarboxylic acid
4-nitrobenzyl (1R,5S,6S)-6-[(R)-1-hydroxyethyl]-1-methyl-2-[(2S,4S)-1-methyl-2-[3-(4-nitrobenzyloxycarbonylamino)azetidin-1-ylcarbonyl]pyrrolidin-4-ylthio]-1-carbapen-2-em-3-carboxylate
(2S,4S)-4-mercapto-1-methyl-2-[3-(4-nitrobenzyloxycarbonylamino)azetidin-1-yl-carbonyl]pyrrolidine
(2S,4S)-4-(4-methoxybenzylthio)-1-methyl-2-[3-(4-nitrobenzyloxycarbonylamino)azetidin-1-ylcarbonyl]pyrrolidine