Two glycosides from the stem bark of Tetracentron sinense

Two glycosides, tetracentronsides A and B, were isolated from the stem bark of Tetracentron sinense Oliv., along with ten known compounds, beta-sitoslerol, lupeol, betulinic acid, oleanolic acid, vanillic aldehyde, vanillic acid, maslinic acid, huazhongilexin. daucosterol and catechin. On the basis of spectral and chemical evidence, tetracentronside A and B were identified as 3,4,5-trimethoxyphenyl-O-6'-O-vanilloyl-beta-glucopyranoside and (8R, 8'R) 9-beta-D-glucopyranosyl dihydrocubebin, respectively. (C) 2000 Elsevier Science Ltd. All rights reserved.