SESQUITERPENOIDS FROM THE LIVERWORT BAZZANIA-JAPONICA

被引:24
作者
ASAKAWA, Y [1 ]
TOYOTA, M [1 ]
UEDA, A [1 ]
TORI, M [1 ]
FUKAZAWA, Y [1 ]
机构
[1] HIROSHIMA UNIV,FAC SCI,DEPT CHEM,NAKAKU,HIROSHIMA 770,JAPAN
关键词
BAZZANIA-JAPONICA; JUNGERMANNIALES; HEPATICAE; CYCLOMYLTAYLAN-3-OL; CYCLOMYLTAYLYL-3-CAFFEATE; 2-HYDROXYCUPARENE; ALBICANOL; ALBICANYL ACETATE; ALBICANYL CAFFEATE; ISOBICYCLOGERMACRENAL; SESQUITERPENOIDS; SUPEROXIDE RELEASE INHIBITORY ACTIVITY; CHEMOSYSTEMATICS;
D O I
10.1016/S0031-9422(00)98247-5
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Two new tetracyclic sesquiterpenoids, cyclomyltaylan-3-ol and its caffeate, have been isolated from the stem-leafy liverwort Bazzania japonica together with the previously known five sesquiterpenoids and their absolute stereostructures established by a combination of the H-1 and C-13 NMR spectral data as well as X-ray crystallographic analysis and CD spectrum. Bazzania japonica is divided into two chemo-types, cyclomyltaylane-type and cuparene-drimane-type. Cyclomyltaylyl-3-caffeate inhibited release of superoxide anions at IC50 7.5-mu-g ml-1.
引用
收藏
页码:3037 / 3040
页数:4
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