Synthesis, Reactions, and Antiviral Activity of 1-(1<i>H</i>-Pyrazolo[3,4-<i>b</i>]pyridin-5-yl)ethanone and Pyrido[2′,3′:3,4]pyrazolo[5,1-<i>c</i>][1,2,4]triazine Derivatives
作者:Fawzy A. Attaby、A. H. H. Elghandour、M. A. Ali、Yasser M. Ibrahem
DOI:10.1080/10426500500326404
日期:2006.6
3-yl-1H-pyrazolo[3,4-b]pyridin-5-yl)ethanone (3) was obtained in very pure state and used as a good starting material for the present study. It diazotized to give the corresponding diazonium salt 9 and also reacted with phenyl isothiocyanate to give the corresponding thiourea derivative 4. Compound 4 was used for the preparation of thiazole derivatives 5–8 via the reaction with active halogen-containing