Three new flavone C-glycosides from the aerial parts of Paraquilegia microphylla |
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| Authors: | Kai-Jie Xu Xue-Min Xu Wen-Long Deng Lei Zhang Ming-Kui Wang |
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| Affiliation: | 1. Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences , Chengdu, 610041, China;2. Sichuan Key Laboratory of Quality and Innovation Research of Chinese Materia Medica, Sichuan Academy of Chinese Medicine Sciences , Chengdu, 610041, China |
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| Abstract: | 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-d-glucopyranosyl-(1 → 2)-β-d-glucopyranoside (1), acacetin-6-C-α- l-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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| Keywords: | Ranunculaceae Paraquilegia microphylla flavone C-glycoside paraquinins A–C |
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