Saponins Isolated from Allium chinense G. DON and Antitumor-promoting Activities of Isoliquiritigenin and Laxogenin from the Same Drug.
作者:Masaki BABA、Masayoshi OHMURA(Nee Matsuda)、Naoki KISHI、Yoshihito OKADA、Shoji SHIBATA、Jeng PENG、Shin-Sen YAO、Hoyoku NISHINO、Toru OKUYAMA
DOI:10.1248/bpb.23.660
日期:——
Investigation of the Chinese crude drug "Xiebai, " the bulbs of Allium chinense G. DON (Liliaceae), led to the isolation of 2 saponins, xiebai-saponin I (laxogenin 3-O-β-xylopyranosyl (1→4)-[α-arabinopyranosyl (1→6)]-β-glucopyranoside) (1) and laxogenin 3-O-α-arabinopyranosyl (1→6)-β-glucopyranoside (2), and the aglycone, laxogenin (3), together with 2 chalcones, isoliquiritigenin (4) and isoliquiritigenin-4-O-glucoside (5), and β-sitosterol glucoside (6). Compounds 1-5 were tested in vitro for their inhibitory effect on the 12-O-tetradecanoylphorbol-13-acetate (TPA)-stimulated 32Pi-incorporation into phospholipids of HeLa cells. In addition to this, laxogenin (3) was proven to have an antitumor-promoting activity in a two-stage lung carcinogenesis experiment.
对中国草药“协白”(Allium chinense G. DON,百合科)的研究导致分离出2种皂苷,分别为协白皂苷 I(泻根甙 3-O-β-木糖吡喃糖基(1→4)-[α-阿拉伯吡喃糖基(1→6)]-β-葡萄糖吡喃糖苷)(1)和泻根甙 3-O-α-阿拉伯吡喃糖基(1→6)-β-葡萄糖吡喃糖苷(2),以及糖苷元泻根甙(3),还分离出了2种查耳酮,即异甘草定 (4) 和异甘草定-4-O-葡萄糖苷 (5),以及β-谷甾醇葡萄糖苷(6)。对化合物1-5进行了体外试验,测试其对12-O-四癸酰香豆素-13-醋酸(TPA)刺激的HeLa细胞磷脂中32Pi的掺入抑制作用。此外,泻根甙(3)在两步法肺癌发生实验中被证明具有抗肿瘤促生长活性。