Studies on annelated 1,4-benzothiazines and 1,5-benzothiazepines. IV. Synthesis and biological activity of new 1-substituted derivatives of 4H-s-triazolo[3,4-c]-1,4-benzothiazine and 4,5-dihydro-s-triazolo[3,4-d]-1,5-benzothiazepine

Regioselective Synthesis of [1,2,4]Triazolo[3,2-b] [2,4]Benzothiazepin-10(5H)-Ones: A New Heterocyclic Ring System

[1,2,4]Triazolo[3,2-b][2,4]benzothiazepin-10(5H)-ones, members of a novel heterocyclic ring system, are synthesised in a regioselective manner via reaction of unsubstituted or substituted 1,2,4-triazole-3-thiones with 2-chloromethyl-benzoyl chloride in good yields.

Studies on annelated [1,4]benzothiazines and [1,5]benzothiazepines, V. Synthesis and biological activity of N-2 alkylamino derivatives of 4,5-dihydro-s-triazolo[3,4-d]-1,5-benzothiazepine

The synthesis of a new series of N-2 alkylamino derivatives of 4,5-dihydro-s-triazolo[3,4-d]-1,5-benzothiazepine has been accomplished starting from 2,3-dihydro-1,5-benzothiazepin-4(5H)ones and their 2-methyl and 2-aryl derivatives. All the compounds were tested in vitro for their antimicrobial activity, but none of them showed remarkable activity. The tricyclic compounds 7a-j, 8a-j, 9a-j, 10a-j, and 11a-j were also screened for their CNS activity in mice and several of them showed interesting activity.