Reduction of 12-acetylaminoindolo[1,2-c]quinazolines. Preparation of derivatives of the new heterocyclic system indolo[3,2-d][1,3]benzodiazepine

Article abstract of DOI:10.1007/BF00755697

Reduction of derivatives of 12-acetylaminoindolo[1,2-c]quinazoline yielded the corresponding 12-acetylamino-5,6-dihydroindolo[1,2-c]quinazolines, recyclization of which under the influence of dilute hydrochloric acid led to the formation of derivatives of the hitherto unknown system indolo[3,2-d][1,3]benzodiazepine.