(4S,5R)-3-((E)-(2R,3S)-3-Hydroxy-2,4-dimethyl-hept-4-enoyl)-4-methyl-5-phenyl-oxazolidin-2-one

(1R,2S)-1-phenyl-2-benzyloxycarbonylamino-1-propanol

(S)-2-[(ethoxycarbonyl)amino]-1-phenyl-1-propanone

碳酸二乙酯

benzyl N-(1H-benzotriazol-1-ylmethyl)carbamate