(2S)-2-[(2,5-dimethyl-[1,3]oxazolo[5,4-d]pyrimidin-7-yl)amino]propanoic acid

哈尔满碱

(2S)-2-[2-(4-nitrophenyl)sulfonylethoxycarbonylamino]propanoic acid

(2S,4s)-3-苯甲酰基-2-叔丁基-4-甲基-1,3-噁唑啉-5-酮

(2R,4S)-3-benzoyl-2-(tert-butyl)-4-methyl-1,3-oxazolidin-5-one