以
甲醇 、
水 为溶剂,
反应 72.0h,
以90%的产率得到25,31,37,42-Tetratert-butyl-46,47,48,49,50-pentamethoxy-7,12,17-trimethyl-3,21-dioxanonacyclo[21.15.7.15,9.110,14.115,19.129,33.140,44.02,35.022,27]pentaconta-1,5(50),6,8,10,12,14(49),15,17,19(48),22,24,26,29(47),30,32,35,37,40,42,44(46)-henicosaene