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New series of pyrrolylpyranopyrazole were synthesized by reacting with (one pot synthesis) ethyl acetoacetate in aqueous ethanol (1), hydrazine hydrate (2), substituted aldehydes (3a-g), malononitrile (4) and triethylamine’s base stirring for 5hr the solid precipitate was obtained, it has been filtered and washed with cold water to give 6-amino-3-methyl-4-substituted phenyl-1,3a,4,7a-tetrahydropyrano [2,3-c] pyrazole-5-carbonitrile (5a-g). Further it is reacted with 4- pyrrol-1-yl benzoic acid (6) with substituted pyranopyrazoline presence of HBTU and DIEA which resulting in formation of substituted N-5-cyano-3-methyl-4-substituted phenyl 1,3a,47a-tetrahydropyrano [2,3-c] pyrazol-6-yl)-4-(1H-pyrrol-1-yl) benzamides (7a-g) was obtained. All newly synthesized compounds were confirmed by TLC and melting point. The structure of the all newly synthesized compounds were confirmed by spectral study such as IR, 1H NMR, 13C NMR and Mass spectroscopy. The newly synthesized compounds were screened for their antibacterial and antitubercular activities. Compounds exhibited antitubercular activity in the range of 1.6 to 25 µg/ml (MIC). Compounds showed antibacterial activity in the range of 0.8 to 100 µg/ml (MIC). It was indeed very much encouraging to note that most of the compounds have shown better and significant antibacterial and antitubercular activities.
Antitubercular, Antibacterial, Pyrrolylpyranopyrazole. HBTU, DIEA., Antitubercular, Antibacterial, Pyrrolylpyranopyrazole. HBTU, DIEA.
Antitubercular, Antibacterial, Pyrrolylpyranopyrazole. HBTU, DIEA., Antitubercular, Antibacterial, Pyrrolylpyranopyrazole. HBTU, DIEA.
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