三氟甲磺酸酐 、
11,17-ditert-butyl-6-[2-tri(propan-2-yl)silylethynyl]pentacyclo[6.6.6.02,7.09,14.015,20]icosa-2,4,6,9(14),10,12,15(20),16,18-nonaen-3-ol 在
吡啶 作用下,
以84%的产率得到[11,17-ditert-butyl-6-[2-tri(propan-2-yl)silylethynyl]-3-pentacyclo[6.6.6.02,7.09,14.015,20]icosa-2,4,6,9(14),10,12,15(20),16,18-nonaenyl] trifluoromethanesulfonate