PEG - 400 : prompted eco - friendly synthesis of some novel pyrazolo [ 1 , 5 - a ] pyrimidine derivatives and their in vitro antimicrobial evaluation
نویسندگان
چکیده
Several pyrazolo [1, 5-a] pyrimidines derivative were prepared by the condensation of substituted of α, βunsaturated carbonyl compounds (chalcones) with substituted 5-amino pyrazole as an alternative polyethylene glycol (PEG-400) as green reaction medium. The reaction is clean with excellent yield, shorter reaction time. The entire synthesized products were characterized by spectral analysis. Furthermore, these newly synthesized compounds were screened for their antimicrobial activity against Escherichia coli (MTCC443), Bacillus subtilis (MTCC441), Staphylococcus aureus (MTCC96) and Salmonella typhi. (MTCC98). The antifungal activity was evaluated against Aspergillus niger, Aspergillus flavus (MTCC3008), Candida albicans (MTCC227) and Penicillium chrysogenum (MTCC160).Most of the compounds showed significant antimicrobial activity. Keywards: PEG-400,Chalcones,5-Amino pyrazole, pyrazolo [1, 5-a] pyrimidines,Antimicrobial activity. ______________________________________________________________________________
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