Synthesis and absolute stereochemistry of spiroacetals in rove beetles (Coleoptera: Staphylinidae)
作者:Hesheng Zhang、Mary T. Fletcher、Konrad Dettner、Wittko Francke、William Kitching
DOI:10.1016/s0040-4039(99)01612-3
日期:1999.10
The unusual branched-carbon chain spiroacetal, 2,2,8-trimethyl-1,7-dioxaspiro[5.5]undecane, has been synthesised as its racemate and (6S,8R)-isomer. The natural compound, identified in the rove beetle, Ontholestes murinus (L.) proved to be the (6R,8S)-isomer. (E,E)-2,8-Dimethyl-1,7-dioxaspiro[5.5]undecane, a major component of the volatiles from the same insect, is the (2S,6R,8S)-isomer, but is largely racemic in Ontholestes tesselatus (Geoffr. Fourcr.). (C) 1999 Elsevier Science Ltd. All rights reserved.