methyl 3-[(3aS,5aS,6R,7R,9aR,9bS)-7-(hydroxymethyl)-3a,6-dimethyl-3-pyridin-3-yl-4,5,5a,7,8,9,9a,9b-octahydro-1H-cyclopenta[a]naphthalen-6-yl]propanoate 、
对甲苯磺酰氯 在
吡啶 、
4-二甲氨基吡啶 作用下,
反应 0.5h,
以64%的产率得到methyl 3-[(3aS,5aS,6R,7R,9aR,9bS)-3a,6-dimethyl-7-[(4-methylphenyl)sulfonyloxymethyl]-3-pyridin-3-yl-4,5,5a,7,8,9,9a,9b-octahydro-1H-cyclopenta[a]naphthalen-6-yl]propanoate