| Literature DB >> 25647080 |
Hai-Lin Long1, Guo-Ying Xu, An-Jun Deng, Zhi-Hong Li, Lin Ma, Yao Lu, Zhi-Hui Zhang, Feng Wu, Hai-Lin Qin.
Abstract
One new flavone, 5,7-dihydroxy-8,2',3',6'-tetramethoxyflavone (1), and one new flavonol, 5,7,6'-trihydroxy-2'-methoxyflavonol (2), were isolated from the roots of Scutellaria baicalensis, and their structures were elucidated on the basis of extensive spectroscopic evidences, especially 1D and 2D NMR and HR-ESI-MS experiments. The structure features of these new compounds lie in the substitution at both C-2' and C-6' positions of B-ring by hydroxyl or methoxyl groups.Entities:
Keywords: 5,7,6′-trihydroxy-2′-methoxyflavonol; 5,7-dihydroxy-8,2′,3′,6′-tetramethoxyflavone; Labiatae; Scutellaria baicalensis; flavonoids
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Year: 2015 PMID： 25647080 DOI： 10.1080/10286020.2014.999048
Source DB: PubMed Journal: J Asian Nat Prod Res ISSN： 1028-6020 Impact factor: 1.569