(3S,7aR)-3-Phenyltetrahydro-5H-pyrrolo[1,2-c][1,3]oxazol-5-one

(R)-(-)-5-羟甲基-2-吡咯烷酮

D-谷氨酸

D-glutamic acid diethyl ester

D-焦谷氨酸乙酯