Issue 19, 1996

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

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.

Article information

Article type
Paper

J. Chem. Soc., Perkin Trans. 1, 1996, 2379-2384

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

T. Akihisa, Y. Kimura, W. C. M. C. Kokke, S. Takase, K. Yasukawa and T. Tamura, J. Chem. Soc., Perkin Trans. 1, 1996, 2379 DOI: 10.1039/P19960002379

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