苯甲醛

Boc-D-焦谷氨酸乙酯

(S)-5-Oxo-4-[1-phenyl-meth-(E)-ylidene]-pyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-ethyl ester

(2S,4S)-2-benzyl-4-((tert-butoxycarbonyl)amino)-5-((tert-butyldimethylsilyl)oxy)pentanoic acid