DEFAR - Artigos publicados em periódicos

Resultados da Pesquisa

Agora exibindo 1 - 2 de 2

Synthesis and microbiological activity of some 2H-1,4-benzothiazin-3-one derivatives.
(2000) Guarda, Vera Lúcia de Miranda; Perrissin, Monique; Thomasson, François; Ximenes, Eulália Camelo Pessoa de Azevedo; Galdino, Suely Lins; Pitta, Ivan da Rocha; Luu-Duc, Cuong
The synthesis and physicochemical properties of 4-butyl-2H-benzo[1,4]thiazin-3-one derivatives are described. These new compounds were synthesised by alkylation in 4-N position and acylation and/or alkylation of 6-NH2 by phase transfer catalysis. Acid hydrolysis of 6-alkylacylamino group yielded 6-alkylamino-4-butyl-2H-benzo[1,4]thiazin-3-ones. The antimicrobial in vitro activity was determined on five compounds.
On the application of knoevenagel condensation for the synthesis of benzylidene benzothiazine compounds and structural study.
(2006) Souza, Ana Maria Alves de; Guarda, Vera Lúcia de Miranda; Leite, Lucia Fernanda Cavalcanti da Costa; Barbosa Filho, José Maria; Lima, Maria do Carmo Alves de; Galdino, Suely Lins; Pitta, Ivan da Rocha
The synthesis and physico-chemical properties of new 6-acetylamino or 6-benzoyl-amino 2-benzylidene-4-methyl-4Hbenzo[1,4]thiazin-3-ones and 6-benzoylamino or 6-nitro 2-benzylidene-4H-benzo[1,4]thiazin-3-ones are described. These benzylidene benzothiazine compounds were prepared by the Knoevenagel condensation with benzaldehydes. The configurations and conformations of benzylidene benzothiazine derivatives were optimised using the semi-empirical method AM1.