Three new C-flavonoids from Corallodiscus flabellata |
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Authors: | W-S Feng X-K Zheng Y-B Liu H-X Kuang |
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Institution: | 1. Henan College of Traditional Chinese Medicine , Zhengzhou, 450008, China fwsh@hntcm.cn;3. Henan College of Traditional Chinese Medicine , Zhengzhou, 450008, China;4. Heilongjiang University of Traditional Chinese Medicine , Ha'erbin, 150040, China |
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Abstract: | Three new C-glycosylflavones, named 5,7,4′-trihydroxy-6-methoxy-8-C-β-d-xylopyranosyl- (1 → 2)]-β-d-glucopyranosyl flavonoside (1), 5,7,4′-trihydroxy-8-methoxy-6-C-β-d-xylopyranosyl-(1 → 2)]-β-d-glucopyranosyl flavonoside (2), and 5,3′,4′-trihydroxy-7,8-dimethoxy-6-C-β-d-xylopyranosyl-(1 → 2)]-β-d-glucopyranosyl flavonoside (3), along with two known compounds 5,4′-dihydroxy-7-methoxy-6-C-glucopyranosyl-flavonoside (4), 3-methoxy-4-hydroxymethyl benzoate (5) were isolated from 70% acetone extract of Corallodiscus flabellata. Their structures were identified on the basis of spectroscopic techniques and chemical methods. |
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Keywords: | Gesneriaceae Corallodiscus flabellata C-glycosylflavone |
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