form dolabellane-type diterpenoids as a result of 5-exo-trig mode of cyclization. The cyclized products were effectively obtained when water or HMPA was added. This constitutes the biogenetic-type transformation of vibsane to dolabellane diterpenoids.
Denudatenone A 在有或没有添加剂的 THF 中用 SmI 2 处理以形成多拉标签烷型二萜,这是 5-exo-trig 环化模式的结果。加入
水或HMPA可有效获得环化产物。这构成了 vibsane 到 dolabellane 二
萜类化合物的
生物遗传型转化。