(S)-2-(tert-butoxy)-N-((S)-1-methoxy-3,3-dimethylbutan-2-yl)-N,2-dimethylbutanamide

(S)-2-((tert-butyldimethylsilyl)oxy)-N-((S)-1-methoxy-3-methylbutan-2-yl)-2-methylbutanamide

(S)-5-ethyl-5-methyl-3-((S)-1-phenylethyl)oxazolidin-4-one

氢氰酸

丁酮