Phytoconstituents from the root of Streptocaulon tomentosum and their chemotaxonomical relevance for separation from S. juventas |
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| Authors: | Myint Myint Khine,Norbert Arnold,Katrin Franke,Andrea Porzel,Jü rgen Schmidt,Ludger Wessjohann |
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| Affiliation: | 1. Department of Chemistry, University of Yangon, University Avenue Road, Kamayut, Yangon, Myanmar;2. Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, D-06120 Halle (Saale), Germany |
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| Abstract: | A new cardenolide, 17β-H-periplogenin-3-O-β-d-digitoxoside (1), and a new pregnane glycoside, Δ5-pregnene-3β,16α-diol-d-O-[2,4-O-diacetyl-β-digitalopyranosyl-(1 → 4)-β-d-cymaropyranoside]-16-O-[β-d-glucopyranoside] (2) were isolated from the roots of Streptocaulon tomentosum (Asclepiadaceae) together with a series of known compounds. Their chemotaxonomic significance for the separation of S. tomentosum from Streptocaulon juventas is discussed, suggesting a rather clear distinction of these species. |
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| Keywords: | Streptocaulon tomentosum Streptocaulon juventas Asclepiadaceae Cardenolides Pregnane glycoside Chemotaxonomy |
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