Synthesis of Diverse 6-Oxa-allocolchicinoids by a Suzuki-Miyaura Coupling, Acid-Catalyzed Intramolecular Transacetalization Strategy
作者:Dharmendra B. Yadav、Lebusetsa Taleli、Alet E. van der Westhuyzen、Manuel A. Fernandes、Maxim Dragoun、Aram Prokop、Hans-Günther Schmalz、Charles B. de Koning、Willem A. L. van Otterlo
DOI:10.1002/ejoc.201500573
日期:2015.8
The synthesis of allocolchicine analogues is of importance as these compounds have been found to possess promising anticancer activity by affecting tubulin polymerization. In this paper, the synthesis of 28 novel substituted 6-oxa-allocolchicinoids is reported. The key steps involved in the synthesis were a Suzuki–Miyaura coupling reaction, followed by an acid-catalyzed intramolecular transacetalization
别秋水仙碱类似物的合成具有重要意义,因为已发现这些化合物通过影响微管蛋白聚合而具有良好的抗癌活性。本文报道了 28 种新型取代 6-氧杂-别秋水仙碱的合成。合成中涉及的关键步骤是 Suzuki-Miyaura 偶联反应,然后是酸催化的分子内转缩醛化反应,以提供所需的 5-烷氧基-5,7-二氢二苯并[c,e] 氧杂环庚烷。此外,当在转缩醛步骤中使用苯硫酚和苯酚时,5-(苯硫基)-5,7-二氢二苯并[c,e]oxepine 和 4-(5,7-dihydrodibenzo[c,e]oxepin-5-分别获得了 yl) 苯酚骨架。不幸的是,合成化合物的细胞毒性并不令人印象深刻。然而,