1,4-Benzodiazepine N-Nitrosoamidines: Useful Intermediates in the Synthesis of Tricyclic Benzodiazepines
作者:Santos Fustero、Javier González、Carlos Del Pozo
DOI:10.3390/11080583
日期:——
1,4-Benzodiazepine N-nitrosoamidines have been used as scaffolds for the preparation of different tricyclic derivatives. Replacement of the N-nitrosoamidine moiety through treatment with the nucleophiles acetylhydrazine, aminoacetaldehyde dimethylacetal and 1-amino-2-propanol, followed by an acid-catalyzed cyclization step, afforded triazolo and imidazobenzodiazepines 1, 6, and 7, respectively, in
Novel 6-substituted 4H-imidazo[1,2-a][1,4]benzodiazepines, the intermediate 5-substituted-2-(2-alkynylamino)-3H-1,4-benzodiazepines, pharmacologically acceptable acid addition salts thereof, and processes for their production. The compounds of this invention and the pharmacologically acceptable acid addition salts thereof are central nervous system depressants. They are useful as sedatives, hypnotics, tranquilizers, muscle relaxants and anticonvulsants, and also as feed additives for increasing growth rate and feed efficiency of livestock and poultry, milk production in the mammalian species and egg production in avian species.