6,14-Ditert-butyl-20,22-dimethoxypentacyclo[17.2.2.04,9.08,12.011,16]tricosa-1(21),4(9),5,7,11(16),12,14,19,22-nonaene 在
ammonium cerium(IV) nitrate 作用下,
以47%的产率得到6,14-Ditert-butylpentacyclo[17.2.2.04,9.08,12.011,16]tricosa-1(21),4(9),5,7,11(16),12,14,19(23)-octaene-20,22-dione