• Korean Journal of Pharmacognosy
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• v.30 no.3
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• pp.345-349
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• 1999

Five compounds were isolated from the BuOH fraction of Polygonum bistorta (Polygonaceae). On the basis of spectral data, these compounds were established as caffeic acid, quercimeritrin, avicularin, gallic acid and protocatechuic acid. The inhibitory activies on $3{\alpha}-hydroxysteroid$ dehydrogenase $(3\;{\alpha}-HSD)$ of isolated compounds were compared. $IC_{50}$ value of isolated compounds were $133.57\;{\mu}g/ml\;(caffeic\;acid)$, $89.1\;{\mu}g/ml\;(quercimeritrin)$, $189.85\;{\mu}g/ml\;(avicularin)$, $140.69\;{\mu}g/ml\;(gallic\;acid)$ and $165.27\;{\mu}g/ml\;(protocatechuic\;acid)$ respectively. Although all compounds showed lower inhibition activities than BuOH fraction $(IC_{50}<50\;{\mu}g/ml)$ of Polygonum bistorta, it showed higher inhibition activities than aspirin $(IC_{50}\;246.81\;{\mu}g/ml)$.

• YAKHAK HOEJI
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• v.36 no.6
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• pp.556-562
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• 1992

Sevral flavonoids were isolated from the ethanol extract of Carthami flos which has been used in treatment of uterin congestion and also as analgesic and antiinflammatory. They were elucidated as kaempferol, quercetin, 6-hydroxy kaempferol, kaempferol 3-glucoside (Astragalin), quercetin 3-glucoside (isoquercitrin), quercetin 7-glucoside (quercimeritrin), kaempferol 3-rutinoside and quercetin 3-rutinoside (rutin). The structures of the isolated compounds were established by spectroscopic and chemical methods.