(5S,6R,6aS,10aS,11R,13S)-6,6a-dihydroxy-11,13-dimethyl-6,6a,7,8,9,10,10a,11-octahydro-5,11-methanobenzo[f]furo[3,4-b]oxonine-1,12(3H,5H)-dione

n,n-二甲基亚甲基碘化胺

环己酮

(3aR,4S,9R,9aS,13aS,14S)-7-(ethoxycarbonyl)-2,2,9,14-tetramethyl-8-oxo-3a,4,9,9a,10,11,12,13-octahydro-8H-4,9-methanobenzo[d][1,3]dioxolo[4,5-c]oxonine-6-carboxylic acid

diethyl 2-(((3aR,4S,5S,6R,6aS,10aS)-6-formyl-2,2,5,6-tetramethyloctahydro-5H-naphtho[1,8a-d][1,3]dioxol-4-yl)oxy)maleate