Tubulin-binding dibenz[c,e]oxepines: Part 2. Structural variation and biological evaluation as tumour vasculature disrupting agents
摘要:
5,7-Dihydro-3,9,10,11-tetramethoxybenz[c,e]oxepin-4-ol 1, prepared from a dibenzyl ether precursor via Pd-catalysed intramolecular direct arylation, possesses broad-spectrum in vitro cytotoxicity towards various tumour cell lines, and induces vascular shutdown, necrosis and growth delay in tumour xenografts in mice at sub-toxic doses. The biological properties of 1 and related compounds can be attributed to their ability to inhibit microtubule assembly at the micromolar level, by binding reversibly to the same site of the tubulin alpha beta-heterodimer as colchicine 2 and the allocolchinol, N-acetylcolchinol 4. (C) 2017 Elsevier Ltd. All rights reserved.
A compound of formula (I) is described; wherein the substituents are as defined in the text and wherein the compound is intended for use in the production of a vascular damaging effect in a warm-blooded animal.
A compound of formula (I) is described; wherein the substituents are as defined in the text and wherein the compound is intended for use in the production of a vascular damaging effect in a warm-blooded animal.