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오가피(Acanthopanax sessiliflorus Seeman) 열매로부터 분리한 페놀 화합물의 항산화활성
인서지 ( Seo Ji In ),이대영 ( Dae Young Lee ),서경화 ( Kyeong Hwa Seo ),남태규 ( Tae Gyu Nam ),김대옥 ( Dae Ok Kim ),김금숙 ( Geum Soog Kim ),노형준 ( Hyung Jun Noh ),김계원 ( Gye Won Kim ),서우덕 ( Woo Duck Seo ),강희철 ( Hee Che 한국응용생명화학회 2012 Journal of Applied Biological Chemistry (J. Appl. Vol.55 No.4
The fruits of Acanthopanax sessiliflorus Seeman (Araliaceae) were extracted with 70% aqueous ethanol at room temperature. The concentrated extract was partitioned with ethyl acetate (EtOAc), n-butyl alcohol, and H2O, successively. From the EtOAc fraction, two compounds were isolated through the repeated silica gel, octadecyl silica gel, and Sephadex LH-20 column chromatographies. According to the results of physicochemical and spectroscopic data including NMR, mass spectrometry, and infrared spectroscopy, the chemical structures of the compounds were determined as 3,5-dihydroxycinnamic acid (1) and protocatechuic acid (2). Compound 1 was isolated from the fruits of A. sessiliflirus Seeman for the first time. And the compounds were evaluated for the radical scavenging the antioxidant capacity using 2,2`-azino-bis(3-ethylbenzthiazoline-6- sulfonic acid)diammonium salt, 1,1-diphenyl-2-picrylhydrazy, and oxygen radical absorbance capacity assay.
덜꿩나무(Viburnum erosum)줄기로부터 이차대사산물의 분리 및 동정
인서지 ( Seo Ji In ),서경화 ( Kyeong Hwa Seo ),송나영 ( Na Young Song ),송명종 ( Myoung Chong Song ),백남인 ( Nam In Baek ) 한국응용생명화학회 2014 Journal of Applied Biological Chemistry (J. Appl. Vol.57 No.2
The stems of Viburnum erosum were extracted with 80% MeOH. The concentrated extract was partitioned with EtOAc, n-BuOH, and H2O. From the EtOAc and n-BuOH fractions, four compounds were isolated through the repeated SiO2, octadecyl silica gel, and Sephadex LH-20 column chromatographies. Based on NMR, MS, and IR spectroscopic data, the chemical structures were determined as betulinic aldehyde (1), koaburside (2), (6R,7E,9R)-9-hydroxymegastigma-4,7-dien-3-one-9-O-β-D-glucopyranoside (3), and byzantionoside B (4). All the compounds were isolated for the first time from the stems of Viburnum erosum.