Regioselective formation of new 3-<i>S</i>-alkylated-1,2,4-triazole-quinolones
作者:Ashraf A. Aly、Mohamed Abd El-Aziz、Yaseen A.M.M. Elshaier、Alan B. Brown、Hazem M. Fathy、Stefan Bräse、Martin Nieger、Mohamed Ramadan
DOI:10.1080/17415993.2021.2006659
日期:2022.3.4
4-hydroxyquinoline to give the corresponding ethyl oxoquinolinyl acetates, which reacted with hydrazine hydrate to afford the hydrazide derivatives. Subsequently, hydrazides reacted with isothiocyanate derivatives to give the corresponding acyl thiosemicarbazides. Finally, subjecting the thiosemicarbazide derivatives with ethyl bromoacetate, the reaction underwent internal cyclization and alkylation processes. Alkylation
Synthesis of potentially new schiff bases of N-substituted-2-quinolonylacetohydrazides as anti-COVID-19 agents
作者:Mohammed B. Alshammari、Mohamed Ramadan、Ashraf A. Aly、Essmat M. El-Sheref、Md Afroz Bakht、Mahmoud A.A. Ibrahim、Ahmed M. Shawky
DOI:10.1016/j.molstruc.2020.129649
日期:2021.4
We report herein a new series of synthesized N-substituted-2-quinolonylacetohydrazides aiming to evaluate their activity towards SARS-CoV-2. The structures of the obtained products were fully confirmed by NMR, mass, IR spectra and elemental analysis as well. Molecular docking calculations showed that most of the tested compounds possessed good binding affinity to the SARS-CoV-2 main protease (Mpro)