(1R,2S,4R)-2-[[2-hydroxy-3-[2-hydroxy-3-[[(1R,2S,4R)-2-hydroxy-1,7,7-trimethyl-2-bicyclo[2.2.1]heptanyl]methyl]phenyl]phenyl]methyl]-1,7,7-trimethylbicyclo[2.2.1]heptan-2-ol 在
四氯化硅 、
1,8-二氮杂双环[5.4.0]十一碳-7-烯 、
三乙胺 作用下,
以
氯仿 为溶剂,
反应 3.0h,
以75%的产率得到(1R,1''R,2'S,3'S,4S,4''S)-1,1'',7,7,7'',7''-hexamethyldispiro(bicyclo[2.2.1]heptane-2,16',-2',17',18',21'-tetraoxa-1'-silapentacyclo[8.7.2.2
1,9.0
5,20.0
14,19]henicosa-5',7',9'(20'),10',12',14'(19')-hexaene-3',2''-bicyclo[2.2.1]heptane)