(S)-(N-benzyl-N-benzyloxycarbonyl)glutamic acid

(5S)-1-tert-butoxycarbonyl-5-(5-methyl-2,7,8-trioxabicyclo[3.2.1]oct-1-yl)-5H-pyrrolin-2-one

DL-谷氨酸

3-[3-((allyloxy)carbonyl)-5-oxo-1,3-oxazolan-4-yl]propanoic acid

(S)-(+)-3-(苄氧基羰基)-5-氧代-4-噁唑啉丙酸