Efficient synthesis of RITA and its analogues: derivation of analogues with improved antiproliferative activity via modulation of p53/miR-34a pathway
作者:Jinshun Lin、Xiuli Jin、Yiwen Bu、Deliang Cao、Nannan Zhang、Shangfu Li、Qinsheng Sun、Chunyan Tan、Chunmei Gao、Yuyang Jiang
DOI:10.1039/c2ob26627j
日期:——
palladium-catalyzed C–C bond-forming Suzuki reactions at room temperature was developed, which was used for deriving a series of substituted tricyclic α-heteroaryl (furan/thiophene) analogues of RITA under mild conditions. These novel analogues showed notable antiproliferative activity against cancer cell lines with wild-type p53 (i.e., HCT116, A549, MCF-7 and K562), but much less activity in HCT116/p53−/− cells
开发了一种在室温下通过实际的钯催化的CC键形成的Suzuki反应合成RITA的新方法,该方法用于衍生一系列取代的三环α-杂芳基(呋喃/噻吩)在温和条件下的RITA类似物。这些新颖的类似物对具有野生型p53(即HCT116,A549,MCF-7和K562)的癌细胞系表现出显着的抗增殖活性,但在HCT116 / p53 -/-细胞中的活性却低得多。特别是,化合物1F表明相比RITA有前途的抗增殖活性,与IC 50 = 28纳米的MCF-7与54纳米的RITA,和癌细胞的选择性。化合物1f以100 nM的浓度显着激活了HCT116细胞中的p53,触发了细胞凋亡。重要的是,我们发现RITA和化合物1f均可诱导G 0 / G 1通过上调miR-34a抑制细胞周期,而miR-34a则下调细胞周期相关蛋白CDK4和E2F1的表达。总而言之,这项研究报告了一种有效的RITA及其类似物的合成方法,并阐明了这些化合物的新型抗增殖机制。