英文别名(2S-trans)-4-Methyl-5-oxo-1,2-pyrrolidinedicarboxylic Acid 1-(1,1-DiMethylethyl) 2-Methyl Ester; 1,2-Pyrrolidinedicarboxylic acid, 4-methyl-5-oxo-, 1-(1,1-dimethylethyl) 2-methyl ester, (2S,4R)-; Methyl (2S,4R)-1-Boc-4-methyl-5-oxopyrrolidine-2-carboxylate; 1-O-tert-butyl 2-O-methyl (2S,4R)-4-methyl-5-oxopyrrolidine-1,2-dicarboxylate; Methyl (2S,4R)-1-(tert-butoxycarbonyl)-4-methylpyroglutamate 
