Ipolamiide and fulvoipolamiide from Stachytarpheta glabra (Verbenaceae): a structural and spectroscopic characterization

Viccini, Lyderson F. and Silva, Pamela S. and Almeida, Mauro V. and Saraiva, Mauricio F. and Peixoto, Paulo Henrique P. and Salimena, Fatima Regina G. and Diniz, Renata and Rodrigues, Bernardo L. and Scowen, Ian and Edwards, Howell G. M. and Oliveira, Luiz F. C. de (2008) Ipolamiide and fulvoipolamiide from Stachytarpheta glabra (Verbenaceae): a structural and spectroscopic characterization. Journal of Molecular Structure, 875 (1-3). pp. 27-31. ISSN 0022-2860

Full content URL: http://dx.doi.org/10.1016/j.molstruc.2007.03.056

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Item Type:Article
Item Status:Live Archive

Abstract

The phenylethanoid glycoside acteoside and the iridoids ipolamiide and 4-methoxycarbonyl-7-methylcyclopentacpyran (fulvoipolamiide) were isolated from the leaves of Stachytarpheta glabra. The solid state structure of fulvoipolamiide was confirmed by X-ray diffraction studies. The molecules of fulvoipolamiide are displayed in layers parallel to the crystallographic axis a. This molecule is planar with electron delocalization in the fused ring system and the pyran rings of adjacent layers in the solid state structure are involved in a �-� stacking interaction. Raman spectroscopy has also been used to characterize the most important bands present in the spectra of fulvoipolamiide and ipolamiide, and comparison made with literature allows the assignment of some key markers, specially the bands in the 1600-1700 cm -1 range. © 2007 Elsevier B.V. All rights reserved.

Keywords:Electrons, Raman spectroscopy, Solid state reactions, Spectroscopic analysis, X ray diffraction analysis, Electron delocalization, Stachytarpheta glabra, Bacteria, Stachytarpheta, Verbenaceae
Subjects:F Physical Sciences > F100 Chemistry
Divisions:College of Science > School of Chemistry
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ID Code:13048
Deposited On:19 Mar 2014 17:39

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