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- W2111085788 abstract "The roots of Trachycalymma fimbriatum (WEIMARCK) BULLOCK contain both cardenolide and pregnaneglycosides. Elimination of 2-deoxysugars by mild acid hydrolysis gave a mixture from which some anhydroderivatives and the following compounds could be isolated: uzarigenin (l), ascleposide = 3-O-(6-deoxy-β-D-allopyranosyl)-uzarigenin (4), coroglaucigenin (6) and two pregnane derivatives (H and J). Compound H could be identified as 3β,14β-dihydroxy5α, 17α-pregnan-20-one (10). Compound J is probably a new substance, for which we tentatively assign structure 18, i.e. 3β8β,14β-trihydroxy-5α,17α-pregnan-20-one. We suspect H and J to be artefacts produced from the corresponding 17b-derivatives during acid hydrolysis. 17-iso-H is probably a precursor in the biosynthesis of uzarigenin. The cardenolides of Trachycalymma fimbriatum are the same as found in Asclepias glaucophylla, a closely related species, while the pregnane derivatives of the latter are distinctly higher hydroxylated." @default.
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- W2111085788 date "1969-01-01" @default.
- W2111085788 modified "2023-09-27" @default.
- W2111085788 title "Cardenolide und Pregnanderivate aus den Wurzeln vonTrachycalymma fimbriatum (WEIMARCK) BULLOCK Glykoside und Aglykone, 322. Mitteilung" @default.
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- W2111085788 doi "https://doi.org/10.1002/hlca.19690520841" @default.
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