One-pot multicomponent synthesis of novel 1-thiazolyl-5-coumarin-3-yl-pyrazole derivatives and evaluation of their cytotoxic activity
作者:Ravibabu Velpula、Rajitha Deshineni、Rajitha Gali、Rajitha Bavantula
DOI:10.1007/s11164-015-2114-2
日期:2016.3
A series of novel 1-thiazolyl-5-coumarin-3-yl-pyrazole derivatives (4a–l) were synthesized via one-pot multicomponent reaction of 5-substituted salicylaldehydes (1a–c), 4-hydroxy-6-methyl-2H-pyran-2-one (2) and 2-hydrazinyl-4-arylthiazoles (3a–d) in acetonitrile using a catalytic amount of piperidine under reflux conditions. This multicomponent approach has advantages such as reduced reaction time and a high product yield percentage when compared with corresponding multistep approaches. All the synthesized compounds were evaluated for their cytotoxic activity against Hep G2 (hepatocellular liver carcinoma) and MCF-7 (breast cancer) cell lines and compared with the standard drug Doxorubicin. Among all the compounds, compounds 4d against Hep G2, 4k against MCF-7 and 4e against both Hep G2 & MCF-7 showed excellent cytotoxic activity.
一系列新型1-噻唑基-5-香豆素-3-基吡唑衍生物(4a–l)通过在 reflux 条件下,使用少量的 Piperidine 催化剂,在乙腈中进行 5-取代水杨 aldehydes(1a–c)、4-羟基-6-甲基-2H-吡喃-2-酮(2)和 2-肼基-4-芳基噻唑(3a–d)的单锅多组分反应合成而成。这种多组分的方法相比于相应的多步骤方法具有缩短反应时间和提高产率的优点。所有合成的化合物都评估了其对 Hep G2(肝细胞肝癌)和 MCF-7(乳腺癌)细胞系的细胞毒性活性,并与标准药物多柔比星进行了比较。在所有化合物中,化合物 4d 对 Hep G2、4k 对 MCF-7 和 4e 对 Hep G2 及 MCF-7 的细胞毒性活性表现出色。