(R)-1-(5-Triisopropylsilanyloxy-furan-3-yl)-2-[(1S,2S,5R,8aR)-1,2,5-trimethyl-5-(4-methyl-pent-4-enyl)-1,2,3,5,6,7,8,8a-octahydro-naphthalen-1-yl]-ethanol 在
amberlyst-15 、
二甲基二环氧乙烷 作用下,
生成 5-Hydroxy-4-{(R)-1-hydroxy-2-[(1S,2S,5R,8aR)-1,2,5-trimethyl-5-(4-methyl-pent-4-enyl)-1,2,3,5,6,7,8,8a-octahydro-naphthalen-1-yl]-ethyl}-5H-furan-2-one