p. 900 - 907
(2007/10/03)(S)-4-t-butyldimethylsilyloxy-1-methyl-2-oxopyrrolidine
(S)-4-hydroxy-1-methyl-2-oxopyrrolidine
(S)-4-methanesulfonyloxy-1-methyl-2-oxopyrrolidine
potassium thioacetate
4-nitrobenzyl (1R,5S,6S)-6-[(R)-1-hydroxyethyl]-1-methyl-2-[(R)-1-methyl-5-oxopyrrolidin-3-ylthio]-1-carbapen-2-em-3-carboxylate
pivaloyloxymethyl (1R,5S,6S)-6-[(R)-1-hydroxyethyl]-1-methyl-2-[(R)-1-methyl-5-oxopyrrolidin-3-ylthio]-1-carbapen-2-em-3-carboxylate
(R)-3-mercapto-1-methyl-5-oxopyrrolidine