6Shirataki Y, Komatsu M, ,yokoe I. Studies on the constit- uents of Sophra species. X VI. constituents of the root of E. japonica Hook. f. ex Regel ( 1 ) [ J ]. Chem. Pharm. Bull. ,1981,29(10) :3033-3036.
7Shirataki Y, ManakaA, I. Yokoe, et al. Two prenyltla- vanones from E. japonica[J]. Phytochemistry, 1982,21 (12) :2959-2963.
8Mizuno M, TamuraK, TanakaT, et al. Three prenyltla- vanones from E. japonica [J]. phytochemistry, 1988,27 (6) : 1831-1834.
9Mizuno M, Tamura K, TanakaT, et al. Six flavanones from the roots of Euchresta formosana[ J ]. phytochemis- try, 1989,28:2811-2812.
10Mizuno M, Matsuura, MTanakaT, et al. Four flavonoids in the roots of? Euchresta? Formosana[ J ] . phytochem- istry, 1991,30:3095-3097.
