Intramolecular cyclisation of α,β-epoxy-artemisia ketone
作者:Elena Tsankova、Valentin Enev、Svetlana Simova
DOI:10.1016/s0040-4020(01)83494-3
日期:1984.1
α,β-epoxy-artemisia ketone, 2 undergoes intramolecularcyclisation by OM-DM yielding the tetrahydrofuran derivatives 3 – 6, while on treatment with BF3,-etherate 2 cyclises to the cyclopentanones 8 and 9. The structure of all products has been elucidated by spectral methods. The mechanism of the cyclisation reaction is discussed briefly.
A gas chromatographic investigation of the steam distilled oil of the herb of Artemisia vulgaris led to the identification of 21 irregularmonoterpenes of non-head-to-tail isoprenoid skeleton. The spectral data of some of these compounds are discussed. The structures of eight newirregularmonoterpenes are given.