title: Complete assignments of NMR data of 13 hydroxymethoxyflavones.
abstract: 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 1H and 13C NMR data of 13 hydroxymethoxyflavones.
authors.affiliation: Division of Bioscience and Biotechnology, BMIC, Konkuk University, Seoul, 143-701, Korea.
authors.forename: Younghee
authors.initials: Y
authors.lastname: Park
authors.forename: Byoung-Ho
authors.initials: BH
authors.lastname: Moon
authors.forename: Heejung
authors.initials: H
authors.lastname: Yang
authors.forename: Youngshim
authors.initials: Y
authors.lastname: Lee
authors.forename: Eungjung
authors.initials: E
authors.lastname: Lee
authors.forename: Yoongho
authors.initials: Y
authors.lastname: Lim
mesh_terms: D002247:Carbon Isotopes; D047309:Flavones / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods* / Q000592:standards*; D015394:Molecular Structure; D011522:Protons; D012015:Reference Standards; D012680:Sensitivity and Specificity; D013237:Stereoisomerism
chemical_list: D002247:Carbon Isotopes; D047309:Flavones; D011522:Protons