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Isolation of Flavonoids and a Saponin from Echinosophora koreensis  

Kim, Ju-Sun (Natural Products Research Institute, Seoul National University)
Byun, Ji-Hye (Natural Products Research Institute, Seoul National University)
Son, Kun-Ho (Department of Food and Nutrition, Andong National University)
Kim, Hyun-Pyo (College of Pharmacy, Kangwon National University)
Chang, Hyeun-Wook (College of Pharmacy, Yeungnam University)
Kang, Sam-Sik (Natural Products Research Institute, Seoul National University)
Publication Information
Korean Journal of Pharmacognosy / v.33, no.2, 2002 , pp. 110-115 More about this Journal
Abstract
Seven prenylated flavonoids and two pterocarpans together with a saponin were isolated from the roots of Echinosophora koreensis. They were identical with echinoisosophoranone, echinoisoflavanone, isosophoranone, sophoraisoflavanone A, kenusanone C, kenusanone A, sophoraflavanone D, 4-hydroxy-3-methoxy-(6aR,11aR)-8,9-methylenedioxy-pterocarpans, (-)-maackiain, and $3-O-{\alpha}-L-rhamnopyranosyl(1{\rightarrow}2)-{\beta}-D-galactopyranosyl(1{\rightarrow}2)-{\beta}-D-glucuronopyranosyl$ kuzusapogenol A. Among them, a pterocarpan, 4-hydroxy-3-methoxy-(6aR,11aR)-8,9-methylenedioxypterocarpan, and a saponin, $3-O-{\alpha}-L-rhamnopyranosyl(1{\rightarrow}2)-{\beta}- D-galactopyranosyl(l{\rightarrow}2)-{\beta}-D-glucuronopyranosyl$ kuzusapogenol A, were isolated for the first time from this plant.
Keywords
Echinosophora koreensis; Leguminosae; prenylated flavonoid; pterocarpan; saponin;
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