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Cardenolides and Cardiac Aglycone from the Stem Bark of Trewia nudiflora

✍ Scribed by Qian-Jin Kang; Pei-Ji Zhao; Hong-Ping He; Yue-Mao Shen

Publisher
John Wiley and Sons
Year
2005
Tongue
German
Weight
84 KB
Volume
88
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Five new cardenolides and one new cardiac aglycone, i.e., (5__α__)‐sarmentogenin 3‐(α‐L‐rhamnopyranoside) (1), (5__α__)‐sarmentogenin (2), 11‐oxouzarigenin 3‐(α‐L‐rhamnopyranoside) (3), (5__α__)‐gitoxigenin 3‐(α‐L‐rhamnopyranoside) (4), (5__α__)‐oleandrigenin 3‐(α‐L‐rhamnopyranoside) (5), and (5__α__)‐oleandrigenin 3‐[β‐D‐glucopyranosyl‐(1 → 4)‐α‐L‐rhamnopyranoside] (6), together with two known cardenolides, i.e., frugoside (= (3__β__,5__α__)‐3‐[(6‐deoxy‐β‐D‐allopyranosyl)oxy]‐14,19‐dihydroxycard‐20(22)‐enolide) and (17__α__)‐ascleposide (= (3__β__,5__α__,17__α__)‐3‐[(6‐deoxy‐α‐D‐allopyranosyl)oxy]‐14‐hydroxycard‐20(22)‐enolide), were isolated from the stem bark of Trewia nudiflora L. (Euphorbiaceae) collected in Xishuangbanna, Yunnan Province, China. Their structures were established by spectroscopic studies. Cardenolides were first found in the genus Trewia (Euphorbiaceae).

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