A novel approach towards design, synthesis and evaluation of some Schiff base analogues of 2-aminopyridine and 2-aminobezothiazole against hepatocellular carcinoma
作者:Shinu Chacko、Subir Samanta
DOI:10.1016/j.biopha.2017.01.108
日期:2017.5
Hepatocellularcarcinoma is the most common primary malignancy of the liver with poor prognosis. In this study novel, Schiff's bases of 2-aminopyridine (SSSC-26 to 31) and 2-aminobenzothiazole (SSSC-32 to 37) were designed, synthesised and evaluated for antioxidant potential using DPPH method, and anti-hepatocellular carcinoma property using diethylnitrosamine (DEN) induced hepatocellular carcinoma
The present report highlights a magnetic nano-Fe3O4–KHSO4·SiO2 catalyzedsynthesis of imidazo[1,2-a]pyridines. The synthetic strategy adopted is expedient, versatile, and offers good to excellent yields from readily available starting materials.
Regioselective Synthesis of 2<i>H</i>-Indazoles Using a Mild, One-Pot Condensation–Cadogan Reductive Cyclization
作者:Nathan E. Genung、Liuqing Wei、Gary E. Aspnes
DOI:10.1021/ol5012423
日期:2014.6.6
An operationally simple and efficient one-pot synthesis of 2H-indazoles from commercially available reagents is reported. Ortho-imino-nitrobenzene substrates, generated via condensation, undergo reductive cyclization promoted by tri-n-butylphosophine to afford substituted 2H-indazoles under mild reaction conditions. A variety of electronically diverse ortho-nitrobenzaldehydes and anilines were examined. To further extend the scope of the transformation, aliphatic amines were also employed to form N2-alkyl indazoles selectively under the optimized reaction conditions.
Sarma, Madhushree Das; Ghosh, Subhojit, Journal of the Indian Chemical Society, 2020, vol. 97, # 8, p. 1295 - 1303
作者:Sarma, Madhushree Das、Ghosh, Subhojit
DOI:——
日期:——
Ultrasonics promoted synthesis of thiazolidinones from 2-aminopyridine and 2-picolilamine
作者:Daniela P. Gouvêa、Valéria D.O. Bareño、Juliano Bosenbecker、Bruna B. Drawanz、Patrícia D. Neuenfeldt、Geonir M. Siqueira、Wilson Cunico
DOI:10.1016/j.ultsonch.2012.03.004
日期:2012.11
The efficient multicomponent synthesis of thiazolidinones from the reaction of arenealdehydes, mercaptoacetic acid and 2-picolilamine or 2-aminopyridine under ultrasound irradiation are reported. The reaction with 2-aminopyridine needs a Lewis acid catalysis to afford the corresponding 2-aryl-3-(pyridin-2-yl)-1,3-thiazolidin-4-ones. All novel compounds were identified and characterized by H-1 and C-13 NMR spectra. Applying the sonochemical methodology, two series of heterocyclic thiazolidinones were synthesized in good yields after short reaction times. (C) 2012 Elsevier B.V. All rights reserved.