Structural requirements for the interaction of combretastatins with tubulin: how important is the trimethoxy unit?
作者:Keira Gaukroger、John A Hadfield、Nicholas J Lawrence、Steven Nolan、Alan T McGown
DOI:10.1039/b306878a
日期:——
A series of combretastatins possessing both a trimethoxy unit and other substituents on ring A has been synthesised and tested for cytotoxicity and their ability to interact with the protein tubulin. All previous studies have indicated that the trimethoxy unit is essential for interaction with tubulin. The studies herein show that molecules possessing functionalities other than trimethoxy can also interact with tubulin. Importantly a trimethyl substituted agent 52a has shown reduced cytotoxicity, but increased potency in its ability to inhibit the assembly of tubulin.
一系列在A环上同时具有三甲氧基单元和其他取代基的康布瑞他汀类化合物已被合成并测试了其细胞毒性和与微管蛋白相互作用的能力。以往所有研究都表明,三甲氧基单元对于与微管蛋白的相互作用至关重要。本研究表明,除了三甲氧基的功能外,其他功能的分子也能与微管蛋白相互作用。重要的是,一个三甲基取代的化合物52a显示出降低的细胞毒性,但在抑制微管蛋白组装的能力上增强了效力。