Synthesis and QSAR Studies of 4-Substituted phenyl-2,6-dimethyl-3, 5-bis-N-(substituted phenyl)carbamoyl-1,4-dihydropyridines as potential antitubercular agents
作者:Bhavik Desai、Dinesh Sureja、Yogesh Naliapara、Anamik Shah、Anil K Saxena
DOI:10.1016/s0968-0896(01)00141-9
日期:2001.8
Synthesis and QSAR studies of the title compounds have resulted in the identification of structural and physicochemical parameters (MR, sigma(o), sigma(m), sigma(p)) contributing to antitubercular activity. Among these, carbamoyl phenyl ring substituted at 3 and 4 position with NO(2) group or 2 position with Cl or OCH(3) group shows >90% inhibition against H(37)Rnu comparable to other substituted phenyls
Synthesis of N 3,N 5,4-triaryl-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxamides
作者:V. L. Gein、M. I. Kazantseva、A. A. Kurbatova
DOI:10.1134/s107042801107027x
日期:2011.7
2-Hydroxyethylammonium acetate: an efficient and reusable homogeneous catalyst for the synthesis of Hantzsch 1,4-dihydropyridines
作者:Li-Qin Kang、Zhi-Jun Cao、Ze-Jun Lei
DOI:10.1007/s00706-015-1587-4
日期:2016.6
2-Hydroxyethylammonium acetate ionic liquid was found to be an excellent catalyst for the one-pot synthesis of 1,4-dihydropyridine derivatives via Hantzsch reaction of ethyl acetoacetate or acetoacetanilide, ammonium acetate, and various aromatic aldehydes. The combinatorial syntheses were achieved for the first time using 2-hydroxyethylammonium acetate ionic liquid as a homogeneous catalyst. The catalyst was active for the Hantzsch reaction in alcohol at reflux. The products were isolated in good yields (78-93 %). The resulting substituted dihydropyridines were characterized and confirmed by(1)H NMR spectral data. The catalyst offers simple means for recovery and the isolated catalyst was reused for three rounds for the synthesis without significant loss of catalytic activity. For all the other reactions carried out with the recycled catalyst, results were similar to that with the fresh catalyst.