三氟甲磺酸酐 、
5,5-bicalixarene 在
1,8-双二甲氨基萘 作用下,
以
二氯甲烷 为溶剂,
反应 3.5h,
以75%的产率得到[23-[25,27-Dihydroxy-26-propoxy-28-(trifluoromethylsulfonyloxy)-5-pentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(24),3,5,7(28),9,11,13(27),15(26),16,18,21(25),22-dodecaenyl]-26,28-dihydroxy-27-propoxy-25-pentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(24),3,5,7(28),9,11,13(27),15(26),16,18,21(25),22-dodecaenyl] trifluoromethanesulfonate