Department of Medicinal Chemistry and Molecular Pharmacology, School of Pharmacy, and The Purdue Center for Cancer Research, Purdue University, West Lafayette, Indiana 47907, USA.
J Med Chem. 2010 Dec 23;53(24):8716-26. doi: 10.1021/jm101048k. Epub 2010 Nov 23.
Indenoisoquinoline topoisomerase I (Top1) inhibitors are a novel class of anticancer agents. Modifications of the indenoisoquinoline A, B, and D rings have been extensively studied in order to optimize Top1 inhibitory activity and cytotoxicity. To improve understanding of the forces that stabilize drug-Top1-DNA ternary complexes, the five-membered cyclopentadienone C-ring of the indenoisoquinoline system was replaced by six-membered nitrogen heterocyclic rings, resulting in dibenzo[c,h][1,6]naphthyridines that were synthesized by a novel route and tested for Top1 inhibition. This resulted in several compounds that have unique DNA cleavage site selectivities and potent antitumor activities in a number of cancer cell lines.
吲哚并异喹啉拓扑异构酶 I(Top1)抑制剂是一类新型的抗癌药物。为了优化 Top1 抑制活性和细胞毒性,对吲哚并异喹啉 A、B 和 D 环进行了广泛的修饰研究。为了更好地理解稳定药物-Top1-DNA 三元复合物的力,将吲哚并异喹啉系统的五元环戊二烯酮 C 环用六元氮杂环取代,得到了通过新途径合成的苯并[c,h][1,6]萘啶,并对其进行了 Top1 抑制测试。这导致了一些具有独特 DNA 切割位点选择性和在多种癌细胞系中具有强大抗肿瘤活性的化合物。