((4S,6R)-6-(2-(tert-butoxy)-2-oxoethyl)-2,2-dimethyl-1,3-dioxan-4-yl)methyl pivalate

醋酸叔丁酯

(5S)-6-(tert-butyl-diphenylsilanyloxy)-5-hydroxy-3-oxohexanoic acid tert-butyl ester