2,3,4,5,6,7,8,9-octahydro-1H-trinden-1-one 、
3'-trimethylsilyloxy-4,5,6,7,8,9,4',5',6',7',8',9'-dodecahydro-3H,1'H-1,2'-bitrindenyl 在
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
反应 24.0h,
以12%的产率得到spiro[2,3,4,5,6,7,8,9,10,11,12,13,14,15-tetradecahydro-1H-bis(trindeno)[1,2-b:2',1'-e]pyran-8,1'-(2',3',4',5',6',7',8',9'-octahydro-1H-trindene)]