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A New Cardenolide and Two New Pregnane Glycosides from the Root Barks of Periploca sepium

✍ Scribed by Yan-Ru Deng; Yin-Pan Wei; Fei Yin; Hong Yang; Ying Wang

Publisher
John Wiley and Sons
Year
2010
Tongue
German
Weight
182 KB
Volume
93
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

A new cardenolide and two new pregnane glycosides, periplogenin 3‐[O‐β‐glucopyranosyl‐(1→4)‐β‐sarmentopyranoside] (1), (3__β__,20__S__)‐pregn‐5‐ene‐3,17,20‐triol 20‐[O‐β‐glucopyranosyl‐(1→6)‐O‐glucopyranosyl‐(1→4)‐β‐canaropyranoside] (2), and (3__β__,14__β__,17__α__)‐3,14,17‐trihydroxy‐21‐methoxypregn‐5‐en‐20‐one 3‐[O‐β‐oleandropyranosyl‐(1→4)‐O‐β‐cymaropyranosyl‐(1→4)‐β‐cymaropyranoside] (3), were isolated from the root barks of Periploca sepium Bge, together with seven related known compounds, periplogenin, xysmalogenin, (3__β__,20__S__)‐pregn‐5‐ene‐3,17,20‐triol, (3__β__,14__β__,17__α__)‐3,14,17‐trihydroxy‐21‐methoxypregn‐5‐en‐20‐one, (3__β__,20__S__)‐pregn‐5‐ene‐3,20‐diol 3‐β‐glucopyranoside 20‐β‐glucopyranoside, (3__β__,20__S__)‐pregn‐5‐ene‐3,20‐diol 3‐[O‐2‐O‐acetyl‐β‐digitalopyranosyl‐(1→4)‐β‐cymaropyranoside] 20‐[O‐β‐glucopyranosyl‐(1→6)‐O‐β‐glucopyranosyl‐(1→2)‐β‐digitalopyranoside], and (3__β__,20__S__)‐ pregn‐5‐ene‐3,20‐diol 20‐[O‐β‐glucopyranosyl‐(1→6)‐β‐glucopyranoside]. Their structures were elucidated on the basis of spectroscopic analyses.

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