Two new cardenolides from the roots of Streptocaulon griffithii

Author： Zhang L.   Xu L.-Z.   Yang S.-L.  

Publisher： Taylor & Francis Ltd

ISSN： 1028-6020

Source： Journal of Asian Natural Products Research, Vol.8, Iss.7, 2006-10, pp. : 613-617

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Abstract

Two new cardenolides, 3β,5β,14β-trihydroxyl-card-16,20(22)-dienolide (1) and 3-O-β-d-glucopyranosyl-5β,14β-dihydroxyl-card-16,20(22)-dienolide (2), together with seven known compounds identified as digitogenin (3), 16-O-acetylgitoxigenin (4), periplogenin (5), 16-O-acetylperiplogenin (6), periplogenin digitoxoside (7), periplogenin-3-O-β-d-glucopyranoside (8) and periplogenin-3-O-β-d-glucopyranosyl-(1Â→Â4)-O-β-d-digitoxopyranoside (9) were isolated from the roots of Streptocaulon griffithii. Their structures were elucidated on the basis of spectroscopic data.

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