dimethyl (S,Z)-2-methyl-3-(1-phenylethylamino)hex-2-enedioate

methyl (S)-7-[2-(methoxycarbonyl)ethyl]-8-methyl-1,4-dioxaspiro[4.5]dec-6-ene-8-carboxylate

methyl (S)-9-diethoxyphosphoryl-5-methoxycarbonyl-5-methyl-4,8-dioxononanoate

2-甲基环戊酮

(3aR,7aR)-3a-hydroxy-7a-methylperhydroindene-1,5-dione