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Novel pyrimidines were prepared by the condensation of chalcones of 4'-piperazine acetophenone with guanidine HCl. The structures of the synthesized compounds RP 1-5 were assigned on the basis of elemental analysis, IR, (1)H NMR and mass spectroscopy. These compounds were also screened for anti-histaminic activity. The recorded percentage of histamine inhibition showed a significant anti-histaminic activity when compared to the reference anti-histaminic drug mepiramine.
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Rahaman et al. (2009) studied this question.
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