Tirucalla-5,24-dien-3β-ol [(13α,14β,17α,20S)-lanosta-5,24-dien-3β-ol] and three other Δ5-unsaturated tirucallanes from the roots of Bryonia dioica Jacq.: the first naturally occurring C-10 methylated tetracyclic triterpene alcohols with a Δ5-monounsaturated skeleton
- 1 January 1996
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1
- No. 19,p. 2379-2384
- https://doi.org/10.1039/p19960002379
Abstract
Four novel triterpene alcohols with a Δ5-unsaturated tirucallane-type skeleton, i.e. tirucall-5-en-3β-ol, tirucalla-5,24-dien-3β-ol, 24-methyltirucalla-5,24(241)-dien-3β-ol and (24S)-24-methyltirucalla-5,25-dien-3β-ol, have been isolated from the roots of Bryonia dioica Jacq. (Cucurbitaceae). The structures have been determined by spectroscopic and chromatographic methods. These compounds are the first examples of naturally occurring C-10 methylated triterpenes with a Δ5-monounsaturated skeleton.Keywords
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