Isolation, Chemical Modification, and Anticancer Activity of Major Metabolites of the Lichen Parmotrema mesotropum
作者:Uppuluri Venkata Mallavadhani、Reddy Srilakshmi Tirupathamma、G. Sagarika、Sistla Ramakrishna
DOI:10.1007/s10600-019-02824-2
日期:2019.9
Extensive chromatographic purification of the chloroform–methanol (1:1) extract of the lichen Parmotrema mesotropum led to the isolation of methyl hematommate (1), methyl-2,4-dihydroxy-3,6-dimethylbenzoate (2), orcinol (3), and atranorin (4). The two major metabolites (1 and 2) were subjected to chemical modification and a total of 15 analogues were synthesized. The synthesized analogues and their parent compounds were evaluated for their anticancer potential against a panel of five human cancer cell lines. Among the tested samples, compound 1g showed potent activity against three cancer cell lines, namely DU145 (IC50 20.07 μM), MCF-7 (IC50 20.94 μM), and U87MG (IC50 25.32 μM). This compound can be considered as lead a molecule for further development.
通过对地衣 Parmotrema mesotropum 的氯仿-甲醇(1:1)提取物进行广泛的色谱纯化,分离出了赤藓酸甲酯(1)、2,4-二羟基-3,6-二甲基苯甲酸甲酯(2)、orcinol(3)和 atranorin(4)。对这两种主要代谢物(1 和 2)进行化学修饰后,共合成了 15 种类似物。对合成的类似物及其母体化合物进行了抗癌潜力评估,评估对象包括五种人类癌症细胞系。在测试的样品中,化合物 1g 对三种癌细胞株,即 DU145(IC50 20.07 μM)、MCF-7(IC50 20.94 μM)和 U87MG(IC50 25.32 μM)表现出了强效活性。该化合物可作为进一步开发的先导分子。