5,6-Dihydropyrrolo[2,1-<i>a</i>]isoquinolines as Alternative of New Drugs with Cytotoxic Activity
作者:Rosa María Chávez-Santos、Paul Eduardo Reyes-Gutiérrez、Rubén Omar Torres-Ochoa、María Teresa Ramírez-Apan、Roberto Martínez
DOI:10.1248/cpb.c17-00409
日期:——
In this study, the pyrrolo[2,1-a]isoquinolines 4a–n were synthesized in good yields in a three steps synthesis from the corresponding α,β-unsaturated esters starting materials. These compounds were tested on six human cancer cells lines to measure the cytotoxic activity as a function of the electronic properties and aromaticity of the substituent at the C-2 position of the pyrroloisoquinoline. Our results reveal that the cytotoxic activity could be explained in terms of the distribution of electronic density across the ring joined to C-2. Also, this study identified 3-hydroxy (4d) and 3-chloro (4j) derivatives with powerful cytotoxic activities. The IC50 values of these compounds were found to be comparable to those of the commercially available Topotecan, Irinotecan, Etoposide, Tamoxifen, and Cisplatin.
在本研究中,从相应的α,β-不饱和酯起始原料出发,经过三步合成,成功制备了吡咯[2,1-a]异喹啉类化合物4a–n,产率良好。这些化合物在六种人癌细胞系中进行了测试,以测量其细胞毒活性,并探究其与C-2位取代基的电子性质和芳香性的关系。我们的结果揭示,细胞毒活性可以通过围绕连接到C-2的环上的电子密度分布来解释。此外,本研究还鉴定出具有强大细胞毒活性的3-羟基(4d)和3-氯(4j)衍生物。这些化合物的IC50值发现与市售的拓扑替康、伊立替康、依托泊苷、他莫昔芬和顺铂相当。