Design, synthesis, topoisomerase I & II inhibitory activity, antiproliferative activity, and structure–activity relationship study of pyrazoline derivatives: An ATP-competitive human topoisomerase IIα catalytic inhibitor
作者:Pervez Ahmad、Hyunjung Woo、Kyu-Yeon Jun、Adnan A. Kadi、Hatem A. Abdel-Aziz、Youngjoo Kwon、A.F.M. Motiur Rahman
DOI:10.1016/j.bmc.2016.03.017
日期:2016.4
A series of pyrazoline derivatives (5) were synthesized in 92–96% yields from chalcones (3) and hydrazides (4). Subsequently, topo-I and IIα-mediated relaxation and antiproliferative activity assays were evaluated for 5. Among the tested compounds, 5h had a very strong topo-I activity of 97% (Camptothecin, 74%) at concentration of 100 μM. Nevertheless, all the compounds 5a–5i showed significant topo
从查耳酮(3)和酰肼(4)合成了一系列吡唑啉衍生物(5),产率为92–96%。随后,对topo-I和IIα介导的舒张和抗增殖活性测定进行了评估5。在测试的化合物中,浓度为100μM的5h的topo-I活性非常强,为97%(喜树碱,74%)。尽管如此,所有化合物5a – 5i在相同浓度下显示出显着的topo II抑制活性,范围为90-94%(依托泊苷,96%)。在一组三种人类肿瘤细胞系HCT15,BT474和T47D中测试了这些化合物的细胞毒性潜力。所有化合物均在1.9-10.4μM的范围内显示出对HCT15细胞系的强活性,IC 50为(阿霉素23.0;依托泊苷6.9;喜树碱7.1μM)。此外,观察到化合物5c,5f和5i对BT474细胞系具有强的抗增殖活性。由于化合物5d在非常低的IC 50下显示出抗增殖活性,因此5d然后选择了ATP,通过多种ATP竞争测定,ATPase测定和DNA-to