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1H and 13C NMR assignments for two new cordiaquinones from roots of Cordia leucocephala

✍ Scribed by Jaécio Carlos Diniz; Francisco Arnaldo Viana; Odaci Fernandes Oliveira; Maria Aparecida M. Maciel; Maria da Conceição de Menezes Torres; Raimundo Braz-Filho; Edilberto R. Silveira; Otília Deusdênia L. Pessoa

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
117 KB
Volume
47
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

From the roots of Cordia leucocephala (Boraginaceae), two new meroterpenoid naphthoquinones, 6‐[10‐(12,12‐dimethyl‐13α‐hydroxy‐16‐methenyl‐cyclohexyl)ethyl]‐1,4‐naphthalenedione (cordiaquinone L) and 5‐methyl‐6‐[10‐(12,12‐dimethyl‐13β‐hydroxy‐16‐methenyl‐cyclohexyl)methyl‐1,4‐naphthalenedione (cordiaquinone M) were isolated. Their structures were elucidated after detailed 1D and 2D NMR (COSY, HSQC, HMBC and NOESY) data analyses and comparison with literature data for analogous compounds. Copyright © 2008 John Wiley & Sons, Ltd.

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