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Acetylated flavonol diglucosides from Meconopsis quintuplinervia
- Shang, X.Y., Li, C., Zhang, C.Z., Yang, Y.C., Shi, J.G.
- Phytochemistry 2006 v.67 no.5 pp. 511-515
- Meconopsis, Papaveraceae, medicinal plants, Oriental traditional medicine, phytochemicals, acetylation, flavonols, glucosides, quercetin, isorhamnetin, chemical structure, spectral analysis, cytotoxicity, humans, cultured cells, antioxidant activity, rats, liver microsomes, lipid peroxidation, China
- Four acetylated flavonol diglucosides, quercetin 3-O-[2'''-O-acetyl-β-D-glucopyranosyl-(1 to 6)-β-D-glucopyranoside] (1), quercetin 3-O-[2''',6'''-O-diacetyl-β-D-glucopyranosyl-(1 to 6)-β-D-glucopyranoside] (2), isorhamnetin 3-O-[2'''-O-acetyl-β-D-glucopyranosyl-(1 to 6)-β-D-glucopyranoside] (3), and quercetin 3-O-[2'''-O-acetyl-α-L-arabinopyranosyl-(1 to 6)-β-D-glucopyranoside] (4), together with five known flavonol glycosides quercetin 3-O-β-D-glucopyranoside, kaempferol 3-O-β-D-glucopyranoside, quercetin 3-O-[β-d-galactopyranosyl-(1 to 6)-glucopyranoside], isorhamnetin 3-O-[β-D-galactopyranosyl-(1 to 6)-β-D-glucopyranoside], and kaempferol 3-O-[β-D-glucopyranosyl-(1 to 2)-β-D-glucopyranoside] have been isolated from Meconopsis quintuplinervia. Their structures were determined using chemical and spectroscopic methods including HRFABMS, 1H-1H COSY, HSQC and HMBC experiments.