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New Lignan, Benzofuran, and Sesquiterpene Derivatives from the Roots of Leontopodium alpinum and L. leontopodioides

✍ Scribed by Michael J. Dobner; Ernst P. Ellmerer; Stefan Schwaiger; Odonchimeg Batsugkh; Samdan Narantuya; Michaela Stütz; Hermann Stuppner

Publisher
John Wiley and Sons
Year
2003
Tongue
German
Weight
75 KB
Volume
86
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Three new compounds, including a benzofuran, 1‐{(2__R__*,3__S__*)‐3‐(β‐D‐glucopyranosyloxy)‐2,3‐dihydro‐2‐[1‐(hydroxymethyl)vinyl]‐1‐benzofuran‐5‐yl}ethanone (1), a lignan, [(2__S__,3__R__,4__R__)‐4‐(3,4‐dimethoxybenzyl)‐2‐(3,4‐dimethoxyphenyl)tetrahydrofuran‐3‐yl]methyl (2__E__)‐2‐methylbut‐2‐enoate (2), and a silphiperfolene‐type sesquiterpene, [(1__S__,2__Z__,3a__S__,5a__S__,6__R__,8a__R__)‐1,3a,4,5,5a,6,7,8‐octahydro‐1,3a,6‐trimethylcyclopenta[c]pentalen‐2‐yl]methyl acetate (3), together with the known coumarins obliquin (4) and its 5‐methoxy derivative 5 were isolated from the roots of Leontopodium alpinum. Another known coumarin derivative, 5‐hydroxyobliquin (6), was isolated from the roots of L. leontopodioides. The structures of these compounds were established by spectroscopic studies.

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