(1R,3R,4R,5R)-5-(4-Methoxybenzyloxy)-4-methyl-4-[1-methyl-1(E)-butenyl]-(3-methoxy-2-oxolanyl)methyl acetate 在
四氧化锇 、
N-甲基吲哚酮 、 camphor-10-sulfonic acid 作用下,
生成 [(2S,3S,3aR,4R,5R,6aS)-2-ethyl-3-hydroxy-4-[(4-methoxyphenyl)methoxy]-3,3a-dimethyl-2,4,5,6a-tetrahydrofuro[2,3-b]furan-5-yl]methyl acetate 、 (1R,2R,3R,5R,7R,8R)-1,8-Dimethyl-2-(4-methoxybenzyloxy)-7-ethyl-8-hydroxy-4,6-(dioxabicycylo[3.3.0]oct-3-yl)methyl acetate