Quantitative Structure-Activity Relationships (QSAR) of 4-Amino-2,6-diarylpyrimidine- 5-carbonitriles with Anti-inflammatory Activity

نویسندگان

  • João Bosco P. da Silva
  • Mozart N. Ramos
  • Benício de Barros Neto
  • Sebastião José de Melo
  • Emerson Peter da Silva Falcão
چکیده

As atividades antiinflamatórias de oito compostos 4-amino-2,6-diarilpirimidina-5-carbonitrilas foram sujeitas a uma análise QSAR baseada nos resultados de cálculos de estrutura eletrônica B3LYP/6-31G(d,p) e AM1. Análise de Componentes Principais e regressões baseados nesses dados indicam que compostos potencialmente mais ativos teriam menores valores de momentos de dipolo e de coeficientes de partição e também seriam afetados pelos valores de cargas dos átomos de carbono através dos quais os dois anéis aromáticos estão ligados ao anel pirimidínico. Duas novas moléculas foram previstas serem, ao menos, tão ativas como aquelas com as maiores atividades usadas no estágio de construção do modelo. Uma delas, tendo o grupo metoxila conectado a um dos anéis aromáticos, foi prevista ter um valor de atividade antiinflamatória de 52,3%. Essa molécula foi sintetizada e sua atividade experimental foi determinada em 52,8%, em concordância com a previsão teórica AM1. Esse valor é 5% maior que o maior valor usado para a modelagem.

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تاریخ انتشار 2008