Both topoisomerase II (Topo II) and histone deacetylase (HDAC) are important therapeutic targets for cancer. In this study, two series of novel compounds containing pyrimido[5,4-b]indole and pyrazolo[3,4-d]pyrimidine motifs were designed and synthesized as dual Topo II/HDAC inhibitors. MTT assay indicated that all the compounds displayed potential antiproliferative activity against three cancer cell
拓扑异构酶 II (Topo II) 和组蛋白脱乙酰酶 (HDAC) 都是重要的癌症治疗靶点。在这项研究中,设计并合成了两个系列的含有嘧啶并[5,4- b ]吲哚和吡唑并[3,4- d ]嘧啶基序的新型化合物作为双重 Topo II/HDAC 抑制剂。MTT 测定表明,所有化合物均对三种癌细胞系(MGC-803、MCF-7 和 U937)显示出潜在的抗增殖活性,对正常细胞系(3T3)具有低细胞毒性。在酶活性抑制实验中,化合物7d和8d对Topo II和HDAC表现出优异的双重抑制活性。裂解反应测定显示7d是 Topo II 毒物,与对接结果一致。进一步的实验结果表明,化合物7d和8d在MCF-7细胞中可促进细胞凋亡并显着抑制迁移。分子对接显示化合物7d和8d在活性位点结合 Topo II 和 HDAC。分子动力学模拟表明7d可以稳定地结合Topo II和HDAC。
Design and development of intramolecular doubly vinylogous Michael addition to access 3-aryl substituted 2-alkenyl-benzofurans and -indoles
The first intramolecular doubly vinylogous Michael addition (DVMA) has been revealed for the construction of 2-alkenyl benzofuran and 2-alkenyl indole derivatives.
phenyl(N-methoxy-N-methylcarbamoylmethyl)sulfoxide 1 is prepared in 2 steps starting from N-methoxy-N-methylchloroacetamide and thiophenol. Reagent 1 is useful for homologation of alkyl halides to alpha,beta-unsaturated N-methoxy-N-methylamide compounds. (C) 1998 Elsevier Science Ltd. All rights reserved.