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Three new flavone C-glycosides from the aerial parts of Paraquilegia microphylla

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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--d-glucopyranosyl-(1 → 2)--d-glucopyranoside (1), acacetin-6-C-α-l-rhamnopyranosyl-(1 → 2)--d-glucopyranosyl-(1 → 2)--d-glucopyranoside (2), and acacetin-6-C-α-l-rhamnopyranosyl-(1 → 2)-(6'''-O-E-feruloyl)--d-glucopyranosyl-(1 → 2)--d-glucopyranoside (3).
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Keywords: Paraquilegia microphylla; Ranunculaceae; flavone C-glycoside; paraquinins A-C

Document Type: Research Article

Affiliations: 1: Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China 2: Sichuan Key Laboratory of Quality and Innovation Research of Chinese Materia Medica, Sichuan Academy of Chinese Medicine Sciences, Chengdu, China

Publication date: May 1, 2011

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