Laboratorio de Química Orgánica y Farmacéutica, Facultad de Farmacia. Universidad de Salamanca, Campus Miguel de Unamuno, 37007, Salamanca, Spain.
Chemistry. 2011 Mar 14;17(12):3406-19. doi: 10.1002/chem.201002869. Epub 2011 Feb 23.
The synthesis of a new family of methoxy-substituted [2.7]- and [2.8]paracyclophanes linked by 3-oxapentamethylene-1,5-dioxy and hexamethylene-1,6-dioxy bridges has been carried out by using the McMurry methodology. Related indole compounds were also synthesised. Olefin-to-diol ratios depended on the bridge length, the structure of the aromatic ring and the reaction conditions. Macrocyclisation, the methoxy substituents and the presence of a rigid indole moiety restricted the conformational equilibria, as observed by NMR spectroscopy and according to theoretical calculations. The synthesised compounds display micromolar tubulin polymerisation inhibitory activity. The conformational implications on the tubulin polymerisation inhibitory activity derived from the macrocyclisation when compared with combretastatins, closely related stilbenes, are also discussed.
通过 McMurry 方法合成了一系列由 3-氧杂戊二烯-1,5-二氧基和己二烯-1,6-二氧基桥连接的甲氧基取代的[2.7]-和[2.8]并环芳烃。还合成了相关的吲哚化合物。烯烃与二醇的比例取决于桥的长度、芳环的结构和反应条件。大环化、甲氧基取代基和刚性吲哚部分的存在限制了构象平衡,这可以通过 NMR 光谱和理论计算观察到。所合成的化合物显示出微摩尔级别的微管蛋白聚合抑制活性。与密切相关的芪类化合物康普瑞他汀相比,当考虑到大环化对微管蛋白聚合抑制活性的影响时,也进行了讨论。