Synthesis of benzo[3,4]azepino[1,2-b]isoquinolin-9-ones from 3-arylisoquinolines via ring closing metathesis and evaluation of topoisomerase I inhibitory activity, cytotoxicity and docking study
作者:Hue Thi My Van、Daulat Bikram Khadka、Su Hui Yang、Thanh Nguyen Le、Suk Hee Cho、Chao Zhao、Ik-Soo Lee、Youngjoo Kwon、Kyung-Tae Lee、Yong-Chul Kim、Won-Jea Cho
DOI:10.1016/j.bmc.2011.08.006
日期:2011.9
3-arylisoquinolines with suitable diene moiety provided seven membered azepine rings of benzoazepinoisoquinolinones. Spectral analyses of these heterocyclic compounds demonstrated that the methylene protons of the azepine rings are nonequivalent. The shielding environment experienced by these geminal hydrogens differs unusually by 2.21 ppm. As expected, benzoazepinoisoquinolinones displayed potent cytotoxicity. However
苯并[3,4]阿斯皮诺[1,2- b异喹啉酮被设计和开发为3-芳基喹啉的限制性形式,目的是抑制拓扑异构酶I(拓扑I)。具有合适的二烯部分的3-芳基异喹啉的闭环复分解(RCM)提供了七个苯并氮杂庚烯异喹啉酮的氮杂环丁烷环。这些杂环化合物的光谱分析表明,氮杂环丁烷环的亚甲基质子是不等价的。这些双氢原子所经历的屏蔽环境相差2.21 ppm。如预期的,苯并氮杂异喹啉酮显示出强的细胞毒性。但是,化合物的细胞毒性作用与topo I抑制无关,这可以通过不能插入DNA碱基对的刚性化合物的非平面构象来解释。相比之下,柔性3-芳基异喹啉8d 在药物靶位点获得活性构象,以显示与细胞毒性生物碱喜树碱(CPT)相同的topo I抑制作用。