Heterocyclic analogs of pleiadiene
N-Aminoperimidinium salts were obtained by the action of O-mesitylsulfonylhydroxylamine on perimidine and its 1- and 2-substituted derivatives, and some transformations of the salts (reaction with p-nitrobenzaldehyde, reduction with sodium borohydride, and the synthesis of 2,4-dimethylpyrazolo[1,5-a]perimidine) were realized.