Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry


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Synthesis of 2,3-disubstituted thieno(2,3-d)pyrimidines for antibacterial and pharmacological activity

Author(s): Madhurani R. Bhadane, J. N. Narendra Sharath Chandra and L. V. G. Nargund

We have synthesized various substituted thieno(2,3-d)pyrimidines, first by synthesizing 2- aminothiophene-3-carboxamide(1), subsequently treating with chloroacetylchloride, 2- (chloroacetamido)thiophene-3-carboxamide(2) was obtained followed by cyclisation, 2- (chloromethyl)thieno(2,3-d) pyrimidine-4one(3) was obtained. The nucleophylic substitution of compound 2-(chloromethyl)thieno(2,3-d)pyrimidine-4one with various aromatic amines, aminophenol gives substituted thienopyrimidines(4a-j).The structure of new compounds were established on the basis of spectral and elemental analysis. The title compounds were screened for antibacterial (agar diffusion method) and antioxidant activity (DPPH scavenging method) and inhibition of denaturation of protein. Most of the compounds have shown promising activity.


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