From the roots of Aristolochiaindica, two newsesquiterpene hydrocarbons, named ishwarane and aristolochene, have been isolated and assigned strutures II and III respectively.
Total Synthesis of (±)-Ishwarane, a Tetracyclic Sesquiterpenoid
作者:R. B. Kelly、J. Zamecnik、B. A. Beckett
DOI:10.1139/v72-559
日期:1972.11.1
A totalsynthesis of (±)-ishwarane, a novel tetracyclic sesquiterpenoid possessing a tricyclo[3.2.1.02,7]octane system, is described. Completion of the synthesis of ishwarane firmly establishes the structure assigned to this sesquiterpenoid and provides corroboration of the structure assigned to the related sesquiterpenoidishwarone. A totalsynthesis of (±)-isoishwarane, a transformation product of
Based on spectral and chemical evidence, ishwarone, the tetracyclic sesquiterpene ketone fromAristolochia indica, has been shown to have the structure 6.
基于光谱和化学证据,已证明印度马兜铃属的四环倍半萜烯酮伊斯瓦隆具有结构6。
Piers, Edward; Hall, Tse-Wai, Canadian Journal of Chemistry, 1980, vol. 58, p. 2613 - 2623