Synthesis, antimalarial and antioxidant activity of coumarin appended 1,4-disubstituted 1,2,3-triazoles
作者:C. P. Kaushik、Manisha Chahal
DOI:10.1007/s00706-021-02821-8
日期:2021.8
A series of coumarin appended triazole hybrids of biotic interest was synthesized through click chemistry approach from the coumarin based terminal alkynes and aromatic azides. All the synthesized triazoles were characterized by FT-IR, 1H NMR, 13CNMR, and HRMS and assessed for antimalarial activities against plasmodium falciparum strain. Results revealed that most of the synthesized coumarin–triazole
通过点击化学方法从基于香豆素的末端炔烃和芳香叠氮化物合成了一系列具有生物意义的香豆素附加三唑杂化物。所有合成的三唑均通过 FT-IR、1 H NMR、13 C NMR 和 HRMS 进行表征,并评估了对恶性疟原虫菌株的抗疟活性。结果表明,大多数合成的香豆素-三唑杂化化合物具有中等至良好的活性。此外,合成的香豆素三唑杂化物用于抗氧化活性,与标准药物相比,发现它是有效的抗氧化剂。 图形摘要
Click-tailed coumarins with potent and selective inhibitory action against the tumor-associated carbonic anhydrases IX and XII
作者:Alessio Nocentini、Fabrizio Carta、Mariangela Ceruso、Gianluca Bartolucci、Claudiu T. Supuran
DOI:10.1016/j.bmc.2015.09.041
日期:2015.11
Coumarins behave as inhibitors of the metalloenzyme carbonic anhydrase (CA, EC 4.2.1.1) with a mechanism of inhibition distinct from other classes of inhibitors. A series of 7-substituted coumarins incorporating aryl-triazole moieties were prepared by click chemistry procedures starting from 7-hydroxycoumarin or 4-methyl-7-aminocoumarin. The panel of new compounds was assayed for the inhibition of the cytosolic, widespread human (h) isoforms hCA I and II, and the transmembrane, tumor-associated ones hCA IX and XII. Most of the coumarins were weak inhibitors or did not inhibit significantly hCA I and II, but showed low nanomolar inhibitory action against the transmembrane isoforms (K-I of 14.3-34.4 nM against hCA IX and of 4.7-37.8 nM against hCA XII). Since many hypoxic tumors over-express hCA IX/XII, and as these targets were recently validated for obtaining antitumor/antimetastatic agents, with one inhibitor in Phase I clinical trials, the present findings constitute an interesting extension to the knowledge of non-sulfonamide, selective inhibitors of CA isoforms involved in serious pathologies. (C) 2015 Elsevier Ltd. All rights reserved.