The reaction of thione 3 or its 2-methylthio derivative 4 with hydrazonoyl halides 5al, in the presence of triethylamine, yielded the corresponding triazolo(4,3-a)pyrimidin-5(1H)-ones 8al. The structure of compounds 8al was further conrmed by the reaction of 3 with the appropriate active chloromethylenes 11ac followed by coupling of the products with benzenediazonium chloride to aord the azo-coupling
ELGEMEIE, GALAL ELDIN HAMZA, HETEROCYCLES, 31,(1990) N, C. 123-127
作者:ELGEMEIE, GALAL ELDIN HAMZA
DOI:——
日期:——
Novel nicotinonitrile-coumarin hybrids as potential acetylcholinesterase inhibitors: design, synthesis, in vitro and in silico studies
作者:Sherif M. H. Sanad、Ahmed E. M. Mekky
DOI:10.1007/s13738-020-02018-6
日期:2021.1
minimizing synaptic degradation of acetylcholine usingacetylcholinesteraseinhibitors. In the current study, we explore the designing of a new series of nicotinonitrile-coumarin hybrids as potentialacetylcholinesteraseinhibitors. The new hybrids were prepared utilizing pyridine-2(1 H )-thiones as starting precursors. The in vitro acetylcholinesterase (AChE) inhibitory activities were examined for
Synthesis and in vitro study of new coumarin derivatives linked to nicotinonitrile moieties as potential acetylcholinesterase inhibitors
作者:Ahmed E. M. Mekky、Sherif M. H. Sanad
DOI:10.1002/jhet.4134
日期:2020.12
2‐hydroxybenzaldehyde derivatives in excellent yields. The latter derivatives were taken as key synthons for the preparation of the target hybrids. Therefore, 2‐hydroxybenzaldehydes were reacted with benzoylglycine in acetic anhydride in the presence of fused sodium acetate at 100°C for 6 hours to afford a new series of nicotinonitrile‐coumarin hybrids. The in vitro acetylcholinesterase inhibitory activities