heteropolycyclic structures with biological activities, we projected the preparation of compounds containing the pyrido[3,2-e][1,2,4]triazine or pyrido[2,3-b][1,4]triazepine systems. The established synthetic approach for the preparation of latter system led to the triazinederivatives 5a-f while a new bicyclic triazepine structure 6 is accomplished with difficulty.
为了引起人们对具有生物活性的杂环结构的兴趣,我们计划制备含有吡啶并[3,2- e ] [1,2,4]三嗪或吡啶并[2,3- b ] [1,4]的化合物三氮平系统。建立的用于制备后一系统的合成方法导致三嗪衍生物5a-f,而难以完成新的双环三氮杂6结构6。