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Molecules 2012, 17(10), 11598-11606; doi:10.3390/molecules171011598
Article

E- and Z-Isomers of New Phytoecdysteroid Conjugates from French Polynesian Microsorum membranifolium (Polypodiaceae) Fronds

1, 2, 1,*  and 3
1 Laboratoire Biodiversité Terrestre et Marine, Université de la Polynésie Française, B.P. 6570 Faa’a, 98702 FAA’A, Tahiti, French Polynesia 2 Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS UMR 8601, Université Paris Descartes, 45 rue des Saints Pères, 75270 Paris, Cedex 06, France 3 Laboratoire BIOSIPE, ER3, Paris 6 – Pierre et Marie Curie, Case 29, 7 Quai Saint Bernard, 75252 Paris, Cedex 5, France
* Author to whom correspondence should be addressed.
Received: 29 August 2012 / Revised: 21 September 2012 / Accepted: 24 September 2012 / Published: 28 September 2012
(This article belongs to the Section Natural Products)
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Abstract

Phytochemical investigation of the fronds of Microsorum membranifolium resulted in the isolation of a new phytoecdysteroid, E-2-deoxy-20-hydroxyecdysone 3-[4-(1-b-D-glucopyranosyl)]-caffeate (1), together with two known phytoecdysteroids, E-2-deoxy-20-hydroxyecdysone 3-[4-(1-b-D-glucopyranosyl)]-ferulate (2), E-2-deoxyecdysone 3-[4-(1-b-D-glucopyranosyl)]-ferulate (3). Their respective Z-isomers 46 were also observed and identified for the first time. The new structures were elucidated on the basis of extensive spectroscopic data analysis (1D, 2D-NMR and HR-MS techniques).
Keywords: phytoecdysteroids; fronds; Microsorum membranifolium (R. Br.) Ching; Polypodiaceae; French Polynesia phytoecdysteroids; fronds; Microsorum membranifolium (R. Br.) Ching; Polypodiaceae; French Polynesia
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Ho, R.; Girault, J.-P.; Raharivelomanana, P.; Lafont, R. E- and Z-Isomers of New Phytoecdysteroid Conjugates from French Polynesian Microsorum membranifolium (Polypodiaceae) Fronds. Molecules 2012, 17, 11598-11606.

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