Withanolides from Jaborosa caulescens var. bipinnatifida.

Authors :: Zhang H
Cao CM
Gallagher RJ
Day VW
Montenegro G
Timmermann BN
Source :: Phytochemistry [Phytochemistry] 2014 Feb; Vol. 98, pp. 232-5. Date of Electronic Publication: 2013 Dec 05.
Publication Year :: 2014
Abstract: Withanolides 2,3-dihydrotrechonolide A (1) and 2,3-dihydro-21-hydroxytrechonolide A (2) were isolated along with two known withanolides trechonolide A (3) and jaborosalactone 39 (4) from Jaborosa caulescens var. bipinnatifida (Solanaceae). The structures of 1-2 were elucidated through 2D NMR and other spectroscopic techniques. In addition, the structure of withanolide 1 was confirmed by X-ray crystallographic analysis.<br /> (Copyright © 2013 Elsevier Ltd. All rights reserved.)