Journal of Asian Natural Products Research p. 409 - 416 (2011)
Update date:2022-08-11
Topics:
Xu, Kai-Jie
Xu, Xue-Min
Deng, Wen-Long
Zhang, Lei
Wang, Ming-Kui
Ding, Li-Sheng
Three new flavone C-glycosides, paraquinins A-C, were isolated from the aerial parts of Paraquilegia microphylla (Royle) Dromm. et Hutch, a Tibetan medicine distributed in the Qinghai-Tibet plateau. On the basis of 1D and 2D NMR evidence, their structures were elucidated as acacetin-6-C-β- glucopyranosyl-(1→2) -α-L-glucopyranoside (1), acacetin-6-C - β-rhamnopyranosyl-(1→2)-β-D-glucopyranosyl-(1→2) -β-D-glucopyranoside (2), and acacetin-6-C -α- L-rhamnopyranosyl- (1→2)-(6'''-O-E-feruloyl) -β-D-glucopyranosyl-(1→2) -β- D-glucopyranoside (3).
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