Synthesis and biological evaluation of truncated α-tubulin-binding pironetin analogues lacking alkyl pendants in the side chain or the dihydropyrone ring
作者:Julián Paños、Santiago Díaz-Oltra、María Sánchez-Peris、Jorge García-Pla、Juan Murga、Eva Falomir、Miguel Carda、Mariano Redondo-Horcajo、J. Fernando Díaz、Isabel Barasoain、J. Alberto Marco
DOI:10.1039/c3ob40854j
日期:——
preparation of several new truncated analogues of the natural dihydropyrone pironetin is described. They differ from the natural product mainly in the suppression of some of the alkyl pendants in either the side chain or the dihydropyrone ring. Their cytotoxic activity and their interactions with tubulin have been investigated. It has been found that all analogues are cytotoxic towards two either sensitive
描述了天然二氢吡喃酮吡咯丁酮的几种新的截短的类似物的制备。它们与天然产物的区别主要在于抑制侧链或二氢吡喃酮环中的某些烷基侧基。已经研究了它们的细胞毒性活性及其与微管蛋白的相互作用。已发现所有类似物对具有相似IC 50的两种敏感或耐药肿瘤细胞系均具有细胞毒性在每种情况下均具有不同的值,因此强烈暗示它们与天然吡咯丁酮一样,也显示出共价作用机制。然而,它们的细胞毒性低于母体化合物。这表明所有烷基侧基对于完整的生物活性都是必需的,C-4上的乙基似乎特别相关。烷基最有可能引起分子构象迁移率的限制并减少可用构象的数量。这使得分子更有可能优先采用更适合α-微管蛋白结合点的形状。