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NMR assignments of unusual flavonoids from the kino of Eucalyptus citriodora

✍ Scribed by Marinalva Oliveira Freitas; Mary Anne S. Lima; Edilberto R. Silveira

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
131 KB
Volume
45
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

Two unusual flavonoids, 3,5,4′,5″‐tetrahydroxy‐7‐methoxy‐6‐[1‐(p‐hydroxy‐phenyl)ethyl]flavanone (1) and 3,5,7,4′,5″‐pentahydroxy‐6‐[1‐(p‐hydroxy‐phenyl)ethyl] flavanone (2), were isolated from the kino of Eucalyptus citriodora. Structural elucidation of the new compounds were established on the basis of spectral data, particularly by the use of 1D NMR and several 2D shift‐correlated NMR pulse sequences (^1^H, ^1^H‐COSY, HMQC, HMBC). Copyright © 2007 John Wiley & Sons, Ltd.

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