Quinoxaline synthesis using Na-zeolite A as a catalyst to proceeds in a better yield than that using zeolite X. The pore diameter of zeolite X is large enough to allow the benzofuroxan derivatives access to cages, therefore part of benzofuroxan is adsorbed in the internal surface of zeolite X. Whereas the windows to the cages of Na-zeolite A are too small to allow the benzofuroxan derivatives access to the cages, therefore all the benzofuroxan is adsorbed on the external surface of zeolite. The reactions of benzofuroxans with benzoylacetone was catalyzed by zeolite proceed not in, but on zeolite.
[EN] ANTIMICROBIAL PHENAZINE COMPOUNDS<br/>[FR] COMPOSES DE PHENAZINE ANTIMICROBIENS
申请人:——
公开号:WO1998027969A2
公开(公告)日:1998-07-02
[EN] Phenazine compounds having antimicrobial activity are described. The phenazine compounds can be phenazine N-oxides, including phenazine-5,10-dioxides, which may optionally be substituted at one or more positions, preferably the 7- and/or 8-positions of the phenazine nucleus. Also described are methods for treating microbial infections, and methods for inhibiting the growth of a microbial cell. The microbes treated or inhibited can be multidrug resistant. [FR] Composés de phénazine à activité antimicrobienne, pouvant être des N-oxydes de phénazine, y compris des 5,10-dioxydes de phénazine, qui peuvent être éventuellement substitués à une ou plusieurs positions, de préférence les positions 7- et/ou 8- du noyau phénazine. Des méthodes de traitement d'infections microbiennes et des méthodes permettant d'inhiber la croissance d'une cellule microbienne sont également décrites. Les microbes traités ou inhibés peuvent présenter une résistance multiple aux médicaments.