Four-component synthesis of 1,2-dihydropyridine derivatives and their evaluation as anticancer agents.
ABSTRACT Two series of compounds with the general formula of 4,6-diaryl-2-oxo-1,2 dihydropyridine-3-carbonitriles and their isosteric imino derivatives were synthesized through a one pot reaction of acetophenone, aldehyde and ammonium acetate with ethyl cyanoacetate or malononitrile, respectively. The synthesized compounds were evaluated for tumor cell growth inhibitory using the human HT-29 colon and MDA-MB-231 breast tumor cell lines. Compound 4-(2- Ethoxyphenyl)-2-imino-6-(4-fluorophenyl)-1,2-dihydropyridine-3 carbonitrile (6) showed IC50 value of 0.70 μM versus HT-29. Meanwhile, compound 4-(2-Hydroxyphenyl)-2-imino-6-(4-fluorophenyl)-1,2-dihydropyridine-3-carbonitrile (4) showed IC50 value of 4.6 μM versus MDA-MB-231. Docking compound 10 to possible molecular targets, survivin and PIM1 kinase showed appreciable interactions with both, which suggest possible targets for the antitumor activity of this novel class of anticancer compounds.
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ABSTRACT: The title compounds were prepared by reaction of 1,1'-(5-methyl-1-phenyl-1H-pyrazole-3,4-diyl)diethanone (1) with different aromatic aldehydes 2a-c, namely Furfural (2a), 4-chlorobenzaldehyde (2b) and 4-methoxybenzaldhyde (2c) to yield the corresponding α,β-unsaturated ketones 3a-c. Compound 3 was reacted with malononitrile, 2-cyanoacetamide or 2-cyanothioacetamide yielded the corresponding bis[2-amino-6-(aryl)nicotinonitrile] 4a-c, bis[6-(2-aryl)-2-oxo-1,2-dihydropyridine-3-carbonitrile] 5a-c or bis[6-(2-aryl)-2-thioxo-1,2-dihydropyridine-3-carbonitrile] 6a,b, respectively. The reaction of compound 6a with each of 2-chloro-N-(4-bromophenyl) acetamide (7a), chloroacetamide (7b) in ethanolic sodium ethoxide solution at room temperature to give the corresponding 4,4'-(5-methyl-1-phenyl-1H-pyrazole-3,4-diyl)bis-6-(2-furyl)thieno[2,3-b]pyridine-2-carboxamide] derivatives 9a,b. While compound 6a reacted with hydrazine hydrate yielded the 4,4'-(5-methyl-1-phenyl-1H-pyrazole-3,4-diyl)bis[6-(2-furyl)-1H-pyrazolo[3,4-b]pyridin-3-amine] 11. The structures of the products were elucidated based on their spectral properties, elemental analyses and, wherever possible, by alternate synthesis. Antimicrobial evaluation of the products was carried out.International Journal of Molecular Sciences 02/2013; 14(2):2967-79. DOI:10.3390/ijms14022967 · 2.34 Impact Factor