5-甲基己基-2-丁烯酸乙酯

3-isobutyl-4-((S)-1-phenylethylcarbamoyl)pentanedioic acid diethyl ester

ethyl 3-[2,2-dimethyl-4,6-dioxo-3-[(1S)-1-phenylethyl]-1,3-oxazinan-5-yl]-5-methyl-hexanoate

(S)-3-(2-hydrazinyl-2-oxoethyl)-5-methyl-N-((S)-1-phenylethyl) hexanamide

(S)-ethyl 5-methyl-3-[2-oxo-2-((S)-1-phenylethylamino)ethyl] hexanoate