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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 Metabolites)
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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 which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

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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