Synthesis and biological evaluation of new penta- and heptacyclic indolo- and quinolinocarbazole ring systems obtained via Pd0 catalysed reductive N-heteroannulation
作者:Marie Laronze-Cochard、Fabien Cochard、Etienne Daras、Amélie Lansiaux、Bertrand Brassart、Enguerran Vanquelef、Elise Prost、Jean-Marc Nuzillard、Brigitte Baldeyrou、Jean-François Goosens、Olivier Lozach、Laurent Meijer、Jean-François Riou、Eric Henon、Janos Sapi
DOI:10.1039/c0ob00149j
日期:——
A short route, involving a tetramolecular condensation reaction and a Pd/C catalyst–H2-mediated reductive N-heteroannulation as the key-steps, has been found for the synthesis of some new penta- and heptacyclic indolo- (12), quinolino- (13) and indoloquinolinocarbazole (11) derivatives. HF-DFT (B3LYP) energy profiles and NMR calculations were carried out to help in the understanding of the experimental results. N-Alkylated indoloquinolinocarbazoles (16b, 17a, 17b and 18) were prepared and screened essentially toward some cancer-(G-quadruplex, DNA, topoisomerase I) and CNS-related (kinases) targets. Biological results evidenced 13 as a potent CDK-5 and GSK-3β kinases inhibitor, while di- or triaminopropyl-substituted indoloquinolinocarbazoles 17b or 18 targeted rather DNA-duplex or telomeric G-quadruplex structures, respectively.
以四元分子缩合反应和 Pd/C 催化剂-H2-介导的还原性 N-异环化反应为关键步骤,找到了一条合成一些新的五环和七环吲哚 (12)、喹啉 (13) 和吲哚喹啉咔唑 (11) 衍生物的简短路线。为了帮助理解实验结果,我们进行了 HF-DFT (B3LYP) 能量曲线和 NMR 计算。制备并筛选了 N-烷基化吲哚喹啉咔唑(16b、17a、17b 和 18),主要针对一些癌症(G-四联体、DNA、拓扑异构酶 I)和中枢神经系统相关(激酶)靶标。生物学结果表明,13 是一种有效的 CDK-5 和 GSK-3β 激酶抑制剂,而二氨基或三氨基丙基取代的吲哚喹啉咔唑 17b 或 18 则分别针对 DNA 双链或端粒 G-四链结构。