Structures and conformations of (–)-isobicyclogermacrenal and (–)-lepidozenal, two key sesquiterpenoids of the cis- and trans-10,3-bicyclic ring systems, from the liverwort Lepidozia vitrea : X-ray crystal structure analysis of the hydroxy derivative of (–)-isobicyclogermacrenal
- 1 January 1984
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1
- No. 2,p. 203-214
- https://doi.org/10.1039/p19840000203
Abstract
The structures and absolute configurations of the two sesquiterpene aldehydes, (–)-isobicyclogermacrenal (1) and (–)-lepidozenal (2), which were isolated from the liverwort Lepidozia vitrea, have been determined on the basis of chemical and spectroscopic evidence to be (6R,7S)-6,11-cyclogermacra-1(10)-E,4E-dien-14-al and (6R,7S)-lepidoza-1 (10)E,4E-dien-14-al, consisting of the cis- and trans-10,3-bicyclic ring systems. The structure of the former (1) has been confirmed by a single-crystal X-ray analysis of its hydroxy derivative (7). The molecular conformations, biogenetical features, and biological activity are also described.This publication has 5 references indexed in Scilit:
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