Density functional theory study of the local molecular properties of acetamide derivatives as anti-HIV drugs

M Oftadeh, N Madadi Mahani, M Hamadanian


Accurate quantum chemical computations based on density functional theory (DFT) were performed on the series of 2-(4-(naphthalen-2-yl)-1,2,3-thiadiazol-5-ylthio)-N-acetamide (TTA) derivatives. The local reactivity of the acetamide derivatives as anti-HIV drugs were studied in terms of Fukui functions in the framework of DFT. The results based on the basis set superposition error (BSSE) corrections showed that the mechanism of bond formation between the acetamide derivatives and tyrosine as a biological molecule occurs mainly through nitrogen atoms. The intramolecular interaction energies between the acetamide derivatives and tyrosine were calculated and the nature of the intermolecular interaction was revealed by natural bond orbital charge (NBO) analysis. The results suggest that acetamide derivatives with bromophenyl and nitrophenyl substitutions are the most potent as anti-HIV drugs.

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