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배춘일(Choon Il Bae),공재명(Jae Myung Gong),오정완(Jung Wan Oh),김현종(Hyun Jong Kim),오갑진(Gab Jin Oh),박시경(Si Kyung Park),정순간(Sun Gan Chung),조의환(Eui Hwan Cho) 大韓藥學會 1997 약학회지 Vol.41 No.5
To find out antitumor active principles from natural resources, we have evaluated various extracts from the leaves of Alnus hirsuta (Betulaceae). The ethylacetate extract of this plant was found to show a significant cytotoxicity against several kinds of cultured human solid tumor cell lines (AGS, A5 49, HCT15, SKOV3, HEP3B) in vitro. Using cytotoxicity-guided chromatographic purification of the ethylacetate extract, cytotoxic constituent:1,7-bis-(4-hydroxyphenyl)-5-(beta-D-glucopyranosyloxy)-3-heptanone, was isolated and structurally identified by physico-chemical properties and spectroscopic evidences.
박시경(Si Kyung Park),오갑진(Gab Jin Oh),배춘일(Choon Il Bae),김종현(Hyun Jong Kim),환완식(Wan Sik Han),정순간(Sun Gan Chung),조의환(Eui Whan Cho) 대한약학회 1997 약학회지 Vol.41 No.6
In our search for bioactive natural products with antitumor activity, we have valuated various extracts of Saururi Herba (Saururaceae), which has been used in traditional medicine for edema, beriberi, jaundice, turbid urine, carbuncle and furuncle. The hexane extract of the aerial part of this plant was found to show a potent cytotoxicity against several kinds of cultured human solid tumor cell lines (AGS, A549, HCT15, SKOV3, HEP-3B) in vitro. Using cytotoxicity-guided chromatographic separation of the hexane extract, cytotoxic constituent: 10-aminomethyl-3-hydroxy-4-methoxyphenanthrene-carboxylic acid lactam, was isolated and structurally identified by physico-chemical properties and spectroscopic evidences.
김현종(Hyun Jong Kim),김현태(Hyun Tae Kim),배춘일(Choon Il Bae),오갑진(Gab Jin Oh),박시경(Si Kyung Park),정순간(Sun Gan Chung),조의환(Eui Hwan Cho) 大韓藥學會 1997 약학회지 Vol.41 No.6
For the investigation of bioactive natural products with hypoglycemic effect, we have evaluated various extracts of Pulsatillae Radix(Ranunculaceae), which has been used in traditional medicine for hematochezia due to intense evil heat, malaria, chills and fever, epistaxis and internal hemorrhoids. The ethylacetate extract of the radix of this plant was found to show a significant hypoglycemic effect on alloxan diabetogenic mice. Using bioactivity-guided chromatographic purification of the ethylacetate extract, hypoglycemic constituent: 2beta, 3beta, 14alpha, 20,22R, 25-hexahydroxy-cholest-7-en-6-one was isolated and structurally identified by physico-chemical properties and spectroscopic evidences.