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Complete assignments of NMR data of 13 hydroxymethoxyflavones
Author(s) -
Park Younghee,
Moon ByoungHo,
Yang Heejung,
Lee Youngshim,
Lee Eungjung,
Lim Yoongho
Publication year - 2007
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.2063
Subject(s) - flavones , chemistry , flavonoid , carbon 13 nmr , stereochemistry , proton nmr , two dimensional nuclear magnetic resonance spectroscopy , organic chemistry , chromatography , antioxidant
Diosmetin, 5,7,3′‐trihydroxy‐4′‐methoxyflavone shows chemopreventive, antimutagenic, and antiallergic effects. On the other hand, chrysoeriol, 5,7,4′‐trihydroxy‐3′‐methoxyflavone induced nodABC‐lacZ in Rhizobium meliloti . Both of them belong to hydroxymethoxy‐ flavones. One major difference between diosmetin and chrysoeriol is the substituted position of hydroxyl and methoxyl groups. In order to elucidate the relationships between their structures and activity, one of the first things to be done is the determination of their structures. However, most flavones occur widely in nature, and thus it is difficult to obtain in sufficient amounts from natural sources to identify their structures. Assignments of NMR data of several hydroxymethoxyflavones may help us to identify novel flavonoid compounds isolated from natural sources based on their NMR experiments. Therefore, we report here the complete assignments of 1 H and 13 C NMR data of 13 hydroxymethoxyflavones. Copyright © 2007 John Wiley & Sons, Ltd.