RESUMEN
The pyrazolo[3,4-b]pyridine derivatives 3 could be prepared by condensing compounds 1 with the 3-aminopyrazolone derivative 2. The pyrazolo[5,2-b]-1,3-oxazine derivative 11 and polyfunctionally substituted 1,4-dihydropyridines 15, 18 were also synthesized. Some of the obtained compounds were tested for their antimicrobial activity.
Asunto(s)
Antiinfecciosos/síntesis química , Pirazoles/síntesis química , Antibacterianos , Antiinfecciosos/farmacología , Bacterias/efectos de los fármacos , Recuento de Colonia Microbiana , Hongos/efectos de los fármacos , Pirazoles/farmacologíaRESUMEN
2-Hydroxyquinoline-4-hydrazide was condensed with some aromatic aldehydes and acetophenones to give the hydrazones 1a-h. It was also reacted with HCOOH, PhCOCl and p-CH3O-PhCOCl to afford 2a-c. Cyclization of 2b was completed by using PPA, POCl3 and/or P2S5, which gave compounds 3, 4, and 6 respectively. Reaction of 4 with some amines gave the corresponding derivatives 5a-f. The thiosemicarbazide 7 was cyclized under acid and basic condition to give the thiadiazolyl-8 and triazolyl-10 derivatives.
