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Total assignments of 1H and 13C NMR spectra of biflorin and bis-biflorin from Capraria biflora

✍ Scribed by Aluisio M. Fonseca; Otília D. L. Pessoa; Edilberto R. Silveira; Francisco J. Q. Monte; Raimundo Braz-Filho; Telma L. G. Lemos

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
88 KB
Volume
41
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

Bis‐biflorin, a new o‐naphthoquinone dimer, and biflorin, 6,9‐dimethyl‐3‐(4‐methyl‐3‐pentenyl)naphtho[1,8‐bc]‐pyran‐7,8‐dione, were isolated from roots of Capraria biflora, a medicinal plant from northeast Brazil. Structural elucidation was made on the basis of spectral data, mainly by high‐field NMR and high‐resolution mass spectrometry. Copyright © 2003 John Wiley & Sons, Ltd.

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