p. 5335 - 5338
(2007/10/03)1-(tert-butyl) 2-methyl (2S,4S)-4-((tert-butyldimethylsilyl)oxy)-5-oxopyrrolidine-1,2-dicarboxylate
methyl (4S)-cis-N-Boc-4-hydroxyl pyroglutamate
4-chloronaphthalen-1-ol
(2S,4R)-4-(4-Chloro-naphthalen-1-yloxy)-5-oxo-pyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester