Synthesis and Stereochemistry of Insect Derived Spiroacetals with Branched Carbon Skeletons
作者:Yong Q. Tu、Achim Hübener、Hesheng Zhang、Christopher J. Moore、Mary T. Fletcher、Patricia Hayes、Konrad Dettner、Wittko Francke、Christopher S. P. McErlean、William Kitching
DOI:10.1055/s-2000-8232
日期:——
7-dioxoaspiro[5.5]undecane system and are certain stereoisomers of the 2,4,8-trimethyl derivative, from the aposematic shield bug, Cantao parentum (White), and a 2,2,8-trimethyl derivative from the rove beetle, Ontholestes murinus (L.). The 1,6-dioxaspiro[4.5]decane system is represented by a stereoisomer of the 2,3,7-trimethyl derivative in the Cantao species. The elucidation of their structures and stereochemistry
大约三十种结构不同的螺缩醛已从昆虫中表征,但只有三种具有分支的碳骨架。两种基于 1,7-二氧杂螺[5.5]十一烷系统,是 2,4,8-三甲基衍生物的某些立体异构体,来自 aposematic shield bug, Cantao parentum (White),以及 2,2,8-来自流浪甲虫 Ontholestes murinus (L.) 的三甲基衍生物。1,6-二氧杂螺[4.5]癸烷系统由Cantao物种中的2,3,7-三甲基衍生物的立体异构体表示。描述了通过光谱、合成和对映选择性气相色谱对它们的结构和立体化学的阐明。