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논문 기본 정보

자료유형
학술저널
저자정보
Yoon, Na-Young (Faculty of Food Science and Biotechnology, Pukyong National University) Min, Byung-Sun (Laboratory of Immunomodulator, Korea Research Institute of Bioscience and Biotechnology) Lee, Hyeong-Kyu (Laboratory of Immunomodulator, Korea Research Institute of Bioscience and Biotechnology) Park, Jong-Cheol (Department of Oriental Medicine Resource, Suncheon National University) Choi, Jae-Sue (Faculty of Food Science and Biotechnology, Pukyong National University)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제28권 제8호
발행연도
2005.1
수록면
892 - 896 (5page)

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In order to isolate substances that inhibit the hemolytic activity of human serum against eryth-rocytes, we have evaluated whole plants of the Orostachys japonicus species with regard to its anti-complement activity, and have identified its active principles following activity-guided isolation. A methanol extract of the O. japonicus, as well as its n-hexane soluble fraction, exhibited significant anti-complement activity on the complement system, which was expressed as total hemolytic activity. A bioassay-guided chromatographic separation of the constituents resulted in the isolation of three known compounds 1-3 from the active n-hexane fraction. The structure of these compounds were analyzed, and they were identified as hydroxyhopanone (1), $\beta-sitosteryl-3-O-\beta-D-glucopyranosyl-6'-O-palmitate$ (2), and $\beta-sitosteryl-3-O-\beta-D-glucopyranoside$ (3), respectively. Of these compounds, compound 2 exhibited potent anti-complement activity $(IC_{50}=1.0\pm0.1{\mu}M)$ on the classical pathway of the complement, as compared to tiliroside $(IC_{50}=76.5\pm1.1{\mu}M)$, which was used as a positive control. However, compounds 1 and 3 exhibited no activity in this system.

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