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

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

doi:10.1002/mrc.2373

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

Magn Reson Chem. 2009 Feb;47(2):190-3. doi: 10.1002/mrc.2373.

Authors

Jaécio Carlos Diniz¹, 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

Affiliation

¹ Departamento de Química, Universidade do Estado do Rio Grande do Norte, 59610-210, Mossoró-RN, Brazil.

PMID: 19025970
DOI: 10.1002/mrc.2373

Abstract

From the roots of Cordia leucocephala (Boraginaceae), two new meroterpenoid naphthoquinones, 6-[10-(12,12-dimethyl-13alpha-hydroxy-16-methenyl-cyclohexyl)ethyl]-1,4-naphthalenedione (cordiaquinone L) and 5-methyl-6-[10-(12,12-dimethyl-13beta-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.

2008 John Wiley & Sons, Ltd.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Carbon Isotopes
Cordia / chemistry*
Magnetic Resonance Spectroscopy*
Naphthoquinones / chemistry*
Plant Roots / chemistry

Substances

Carbon Isotopes
Naphthoquinones