Synthesis of novel β-amino ketones containing a p-aminobenzoic acid moiety and evaluation of their antidiabetic activities
作者:GuangXia Tang、JuFang Yan、Li Fan、Jin Xu、XiaoLi Song、Li Jiang、LingFei Luo、DaCheng Yang
DOI:10.1007/s11426-012-4816-2
日期:2013.4
The synthesis of two series of β-amino ketones containing a p-aminobenzoic acid moiety (TM-1 and TM-2) using a modified protocol of the Mannich reaction is reported. The molecular structures of a total of tweenty three new target compounds were characterized by 1H NMR, 13C NMR, ESI-MS and HR-MS. Subsequently, their antidiabetic activities were screened in vitro. The α-glucodase inhibition (α-GI) activity of compound 1e reached a remarkable level of 66.50%. The peroxisome proliferator-activated receptor (PPAR) relative activation activities of six compounds are above 80%, and in particular 2i displays an unprecedentedly high PPAR of 130.91%. The structure-activity relationships of the compounds were established. 2i is also subject to further in-depth investigation.
Synthesis, spectroscopic and molecular structures investigations of some carboxylated schiff bases
作者:Salam J.J. Titinchi、Hanna S. Abbo、Ali A.H. Saeed
DOI:10.1016/j.molstruc.2004.06.025
日期:2004.11
weaker than tyrosine and phenylalanine, 2.5–13 Ω−1 cm2 mol−1. The melting points and pH values of Schiffbases are compared with those of some α-aminoacids and some related Schiffbases that have no COOH group in their structures. On the bases of these data, it was concluded that carboxylated Schiffbases exist in two forms, the ionized and the free base where the later is predominant. The ionized form
Microwave-Assisted, Solvent-Free and Parallel Synthesis of Some Novel Substituted Imidazoles of Biological Interest
作者:Gyanendra Kumar Sharma、Devender Pathak
DOI:10.1248/cpb.58.375
日期:——
of some novel substituted imidazoles of biological interest is reported. First, primary aromatic or heteryl amine was condensed with aryl or heteryl aldehydes to afford corresponding Schiff's base. The Schiff's base further on treatment with ammonium acetate (NH(4)OAC) and isatin using silica gel as the solid support, yielded the corresponding aryl imidazoles. In this paper a comparative study between
Microwave-assisted, solvent-free, parallel syntheses and elucidation of reaction mechanism for the formation of some novel tetraaryl imidazoles of biological interest
作者:B. R. Prashantha Kumar、Gyanendra Kumar Sharma、S. Srinath、Mohamed Noor、B. Suresh、B. R. Srinivasa
DOI:10.1002/jhet.68
日期:2009.3
AbstractThe microwave assisted, solvent free, parallel syntheses of title compounds is described in this protocol. Twelve new tetraaryl imidazoles, which are incorporated with the chemotherapeutic pharmacophores, have been synthesized by adopting one pot multicomponent reaction. Attempt has been made to investigate the mechanism behind the formation of tetraaryl imidazoles by product identification method. The synthesized compounds were analyzed by physical and analytical data. The synthesized compounds were evaluated for their antibacterial, antitubercular, and short‐term anticancer activity. Compound 13 was found to be the candidate compound to investigate further for its potential anticancer activity. J. Heterocyclic Chem., 46, 278 (2009).
Synthesis of 4-Imino-2H,3H,5H-[1,2,5]thiadiazolidin-1-oxide through Cycloaddition Reaction of N-Sulphinylanilines and N-(α-Cyano-α-aryl)-methylanilines
作者:Manpreet Kaur、Baldev Singh
DOI:10.1002/jhet.1828
日期:2014.7
Through the normal mode of cycloaddition reaction of N‐(α‐cyano‐α‐aryl)‐methylanilines (II) onto N‐sulphinylanilines (III) has provided 2,3,5‐triaryl‐4‐imino‐2H,3H,5H‐[1,2,5]thiadiazolidin‐1‐oxides (IV). The present protocol has advantage of convenient operation to synthesize heterocyclics in good yield.