[Synthesis and biological activity of pyrido(2,3-e)-1,4-diazepine and of pyrido(2,3-b)(1,4)diazepine].

: The Schmidt reaction on tetrahydro-1,8-naphthyridin-4-ones gave pyrido [2,3-e]-1,4-diazepines and pyrido[2,3-b][1,4]diazepines. The preliminary pharmacological screening of some of these compounds showed no appreciable activity.