N-methoxy-N-methyl-2-{(2R,4R,6R)-6-[2-(4-methoxyphenoxy)ethyl]-2-phenyl-1,3-dioxan-4-yl}acetamide

(2R,6S,8R,9S)-methyl 8,9-dimethyl-4-oxo-1,7-dioxaspiro<5.5>undecane-2-carboxylate

(2R,4R,6S,8R,9S)-methyl 4<(tert-butyldiphenylsilyl)oxy>-8,9-dimethyl-1,7-dioxaspiro<5.5>undecane-2-carboxylate

(2S,4R,6S,8R,9S)-4-<(tert-butyldiphenylsilyl)oxy>-8,9-dimethyl-1,7-dioxaspiro<5.5>undecane-2-carboxaldehyde