methyl (1'R,2'R,4S,5'S,6'S)-(E)-5-(6'-acetoxy methyl-2'-trimethylsilyloxy-2'-methyl-bicyclo[3.1.1]hept-6'-yl)-4-tert-butyldiphenylsilyloxy-2-methyl-2-pentenoate 在
4-甲基苯磺酸吡啶 作用下,
以
甲醇 为溶剂,
反应 0.5h,
以52%的产率得到methyl (1'R,2'R,4S,5'S,6'S)-(E)-5-(6'-acetoxy methyl-2'-hydroxy-2'-methyl-bicyclo[3.1.1]hept-6'-yl)-4-tert-butyldiphenylsilyloxy-2-methyl-2-pentenoate