Cytotoxic Arylnaphthalide Lignan Glycosides from the Aerial Parts of<i>Phyllanthus taxodiifolius</i>
作者:Patoomratana Tuchinda、Anawat Kumkao、Manat Pohmakotr、Samaisukh Sophasan、Thawatchai Santisuk、Vichai Reutrakul
DOI:10.1055/s-2005-873141
日期:2006.11
The arylnaphthalide lignan glycosides, taxodiifoloside (1), cleistanthoside A (2), cleistanthin A (3) and cleistanthin A methyl ether (4), together with a triterpene, glochidone (5), have been isolated from the aerial parts of Phyllanthus taxodiifolius. The structures were established using spectral and chemical methods. Compounds 3 and 4, as well as the derivatives 2a and 3a exhibited potent cytotoxic activities with GI50 values in the range of 10-7 - 10-9 M in five cultured mammalian cancer cell lines while the new compound 1 showed moderate activity (GI50 in the order of 10-6 M). Compounds 2 and 5 were inactive in all tested cell lines.
从税斑叶壳斗树(Phyllanthus taxodiifolius)的地上部分中分离出了四种芳基萘酰木质素苷:税斑叶壳斗苷 (1)、清香苷 A (2)、清香素 A (3) 和清香素 A 甲基醚 (4),以及一种三萜类化合物,奎胺 (5)。通过光谱和化学方法确定了它们的结构。化合物 3 和 4,以及衍生物 2a 和 3a 在五种培养的哺乳动物癌细胞系中表现出强效的细胞毒性活性,其 GI50 值在 10^-7 到 10^-9 M 范围内,而新化合物 1 显示出中等活性(GI50 约为 10^-6 M)。化合物 2 和 5 在所有测试的细胞系中均无活性。