Synthetic studies on psiguadial B: Construction of bicyclo[4.3.1]decane skeleton via double cyclization reaction of alkyne dicobalt complex
作者:Masahiko Kinebuchi、Ryohei Uematsu、Keiji Tanino
DOI:10.1016/j.tetlet.2017.02.058
日期:2017.4
A new method for constructing the polycyclic skeleton of psiguadial B (1), a meroterpenoid isolated from an evergreen shrub of Myrtaceae, was developed. The terpenoid substructure of 1 was constructed on the basis of a cascade double cyclization reaction of an alkyne dicobalt complex, which afforded the bicyclo[4.3.1]decane derivative having a benzyl group with the correct configuration. The substituted
开发了一种新的方法来构建psiguadial B(1)的多环骨架,该骨架是从桃金娘科的常绿灌木中分离出来的类萜。的萜类子1被炔的级联双环化反应的基础上构建的八羰基二复合物,其提供的双环[4.3.1]癸烷衍生物具有正确结构的苄基。将取代的芳环引入中间体的桥头位置,并在自由基条件下溴化,随后进行分子内环化反应,从而以立体选择性方式形成苯并吡喃部分。