Synthesis and antiinflammatory activity of 4-amino-2-aryl-5-cyano-6-{3- and 4-(N-phthalimidophenyl)} pyrimidines
摘要:
Six new 4-amino-5-eyano-2,6-diarylpyrimidines 5a-h has been synthesized in a facile manner by reacting the appropriate arylamidines 4a-d with bisnitriles 3a-e. Reduction of the nitro group of 5a-e using Pd in ethyl acetate furnished 6a-e in good yields. Reaction of 6a-e individually with phthalic anhydride yielded 7a-e in good to excellent yields. The newly synthesized heterocycles were characterized by IR, H-1-NMR and mass spectral data. Compounds 5f-h and 7a-e were also evaluated against inflammation. Pyrimidines 5g, h exhibited better anti inflammatory activity when compared with acetylsalicylic acid (ASA). Phthalimide derivatives 7a-e also presented antiinflammatory activity, and three of them, viz., 7a-c have been found to be twice more active than aspirin. Cytotoxical evaluations of compounds 7a-e using neoplastic cells (NCI-H-292 and Hep-2) presented 41% of growth inhibition of neoplastic cells NCI-H-292. (c) 2006 Elsevier SAS. All rights reserved.
Synthesis of 4-amino-2,6-diaryl-5-cyanopyrimidines as antimicrobial agents
作者:Zenaide Severina do Monte、Maria Renata Leite Monteiro、Camila Beatriz Atanásio Borba、Norma Buarque de Gusmão、Emerson Peter da Silva Falcão、Ricardo Oliveira Silva、Rajendra M. Srivastava、Sebastião José de Melo
DOI:10.1080/00397911.2016.1151051
日期:2016.6.2
and arylamidines in the presence of a base was clarified. A preliminary screening of the antibacterial tests clearly showed that 4 out of 11 pyrimidines, 3a, 3e, 3f, and 3k, were effective against bacteria Staphyloccus aureus, Bacillus subtillis, and Pseudomonas aeruginosa. Further, the minimum inhibitory concentration (MIC) against the bacteria has been determined. GRAPHICAL ABSTRACT