N-Boc-β-keto-γ-phenylalanine

(4S)-4-[(tert-butyloxycarbonyl)amino]-6-methyl-3-oxoheptanoic acid ethyl ester

乙醇

tert-butyl ((S)-1-((R)-3,3-dichloro-4-oxooxetan-2-yl)-2-phenylethyl)carbamate

BOC-L-苯丙氨酸