Potent Activity against Multidrug-Resistant <i>Mycobacterium tuberculosis</i> of α-Mangostin Analogs
作者:Pichit Sudta、Payung Jiarawapi、Apichart Suksamrarn、Poonpilas Hongmanee、Sunit Suksamrarn
DOI:10.1248/cpb.c12-00874
日期:——
A new series of mangostin analogs of natural α-mangostin from mangosteen was prepared and their antimycobacterial activity was evaluated in vitro against Mycobacterium tuberculosis H37Ra. The results showed that the monoalkyl tetrahydro α-mangostin analogs displayed increased antimycobacterial activity as compared with the lead natural xanthone, α-mangostin. Among the tested compounds, 6-methoxytetrahydro α-mangostin (16) exhibited the most potent antimycobacterial activity with minimum inhibitory concentration (MIC) of 0.78 µg/mL. The activity of the monoalkylated and monoacylated tetrahydro α-mangostins decreases as the length of carbon chain increases. The methyl ether analog was also active against the multidrug-resistant (MDR) strains with pronounced MICs of 0.78–1.56 µg/mL.
研究人员从山竹中提取了天然α-山竹甙,制备了一系列新的山竹甙类似物,并在体外评估了它们对结核分枝杆菌 H37Ra 的抗霉菌活性。结果表明,单烷基四氢 α-山竹酮类似物的抗霉菌活性高于主要天然氧杂蒽酮 α-山竹酮。在测试的化合物中,6-甲氧基四氢 α-曼戈斯汀(16)的抗霉菌活性最强,最低抑菌浓度(MIC)为 0.78 µg/mL。单烷基化和单酰化四氢 α-曼戈斯汀的活性随着碳链长度的增加而降低。甲醚类似物对耐多药(MDR)菌株也有活性,其显著的 MIC 值为 0.78-1.56 µg/mL。