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Unequivocal assignments of flavonoids from Tephrosia sp. (Fabaceae)
Author(s) -
Arriaga A. M. C.,
Lima J. Q.,
Vasconcelos J. N.,
de Oliveira M. C. F.,
AndradeNeto M.,
Santiago G. M. P.,
Uchoa D. E. A.,
Malcher G. T.,
Mafezoli J.,
BrazFilho R.
Publication year - 2009
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.2422
Subject(s) - chemistry , fabaceae , stereochemistry , chemical shift , two dimensional nuclear magnetic resonance spectroscopy , traditional medicine , botany , biology , medicine
1 H and 13 C NMR chemical shifts of praecansone B, pongaflavone and dehydrorotenone isolated from Tephrosia egregia Sandw and obovatin from T. toxicaria Pers. were unambiguously assigned by 1D and 2D NMR experiments including 1 H, 1 H COSY, gHMQC and gHMBC, allowing the correction of literature assignments.Copyright © 2009 John Wiley & Sons, Ltd.