Hexaoxygenated Flavonoids from Pteroxygonum giraldii
Autor: | Xiao Zhang, Yan-Fang Su, Shi-Lun Yan, Zhen-Hai Wu, Tianqi Wang, Xiumei Gao, Yan-Hong Gao |
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Rok vydání: | 2010 |
Předmět: | |
Zdroj: | Natural Product Communications. 5:1934578X1000500 |
ISSN: | 1555-9475 1934-578X |
Popis: | Two flavonoids with an unusual 2′,4′,5′-trisubstituted B-ring (1 and 2), four myricetin derivatives (3-methylmyricetin-3′-O-β-D-xylopyranoside (3), myricetin-3-O-α-L-rhamnopyranoside, myricetin-3-O-β-D-galactopyranoside, and 3-methylmyricetin), and myricetin were isolated from the roots of Pteroxygonum giraldii Damm. & Diels. Their structures were elucidated using various spectroscopic methods and acid hydrolysis. Compound 1 was a new flavonoid and the NMR spectroscopic data of compounds 2 and 3 are reported for the first time. |
Databáze: | OpenAIRE |
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