5-Isopropenyl-1-{(4R,5S)-5-[(Z)-(S)-3-(4-methoxy-benzyloxymethyl)-1-methoxymethoxy-penta-2,4-dienyl]-2,2-dimethyl-[1,3]dioxolan-4-yl}-6-methyl-2-methylene-hept-5-en-1-one 反应 17.0h,
以97%的产率得到(3aR,4aR,8aR,9S,9aS)-4a-(3-Isopropenyl-4-methyl-pent-3-enyl)-8-(4-methoxy-benzyloxymethyl)-9-methoxymethoxy-2,2-dimethyl-4a,5,6,8a,9,9a-hexahydro-3aH-naphtho[2,3-d][1,3]dioxol-4-one