Synthesis of Marine α-Methoxylated Fatty Acid Analogs that Effectively Inhibit the Topoisomerase IB from Leishmania donovani with a Mechanism Different from that of Camptothecin
作者:Néstor Carballeira、Nashbly Montano、Raquel Alvarez-Velilla、Christopher Prada、Rosa Reguera、Rafael Balaña-Fouce
DOI:10.3390/md11103661
日期:——
α-methoxylated fatty acids with unusual biophysical and biological properties and in some cases they display enhanced anticancer activities. However, the antiprotozoal properties of the α-methoxylated fatty acids have been less studied. In this work, we describe the total synthesis of (5Z,9Z)-(±)-2-methoxy-5, 9-eicosadienoic acid (1) and its acetylenic analog (±)-2-methoxy-5,9-eicosadiynoic acid (2), and report
海绵生物合成具有不同寻常的生物物理和生物学特性的 α-甲氧基化脂肪酸,并且在某些情况下它们显示出增强的抗癌活性。然而,对α-甲氧基化脂肪酸的抗原生动物特性的研究较少。在这项工作中,我们描述了 (5Z,9Z)-(±)-2-甲氧基-5, 9-二十碳二烯酸 (1) 及其炔类似物 (±)-2-甲氧基-5,9-二十碳二烯酸的全合成酸 (2),并报告它们抑制(EC₅₀ 值在 31 和 22 µM 之间)多诺瓦利什曼原虫 DNA 拓扑异构酶 IB 酶 (LdTopIB)。还研究了酸 (±)-2-甲氧基-6-二十烷酸 (12) 对 LdTopIB (EC₅₀ = 53 µM) 的抑制作用。LdTopIB 抑制的效力遵循 2 > 1 > 12 的趋势,表明抑制的有效性取决于不饱和度。所有研究的 α-甲氧基化脂肪酸均未能抑制 100 µM 的人拓扑异构酶 IB 酶 (hTopIB)。然而,α-甲氧基化脂肪