Largazole Analogues Embodying Radical Changes in the Depsipeptide Ring: Development of a More Selective and Highly Potent Analogue
作者:Jehad Almaliti、Ayad A. Al-Hamashi、Ahmed T. Negmeldin、Christin L. Hanigan、Lalith Perera、Mary Kay H. Pflum、Robert A. Casero、L. M. Viranga Tillekeratne
DOI:10.1021/acs.jmedchem.6b01271
日期:2016.12.8
hybridization from sp3 to sp2 at C-7 is well tolerated. Analogue 7 was more class I selective compared to largazole, with at least 464-fold selectivity for class I HDAC proteins over class II HDAC6 compared to a 22-fold selectivity observed with largazole. To our knowledge 7 represents the first example of a potent and highly cytotoxic largazole analogue not containing a thiazoline ring. The elimination
合成了许多海洋生物组蛋白脱乙酰基酶抑制剂拉格唑的类似物,这些类似物在二肽肽环中引入了主要的结构变化。用联吡啶基团取代拉格唑的噻唑-噻唑啉片段可得到具有强大的细胞生长抑制活性和与拉格唑相似的活性特征的类似物7,表明伴随C-7处sp3到sp2杂交的伴随构象变化是可以很好地耐受的。与largazole相比,类似物7对I类的选择性更高,与对II类HDAC6的选择性相比,对I类HDAC蛋白的选择性至少高464倍,而对largazole观察到的选择性高22倍。据我们所知,7代表了不包含噻唑啉环的有效且具有高细胞毒性的拉格唑类似物的第一个例子。