(4aS,6aR,9S,11aR,11bS)-9,11b-dimethyl-4-methylene-4a,5,6,9,10,11,11a,11b-octahydro-6a,9-methanocyclohepta[a]naphthalene-3,8(4H,7H)-dione 、
1-methylenepiperidin-1-ium iodide 在
lithium hexamethyldisilazane 作用下,
以
四氢呋喃 为溶剂,
反应 17.0h,
以37%的产率得到(4aS,6aS,7R,9S,11aR,11bS)-9,11b-dimethyl-4-methylene-7-(piperidin-1-ylmethyl)-4a,5,6,9,10,11,11a,11b-octahydro-6a,9-methanocyclohepta[a]naphthalene-3,8(4H,7H)-dione