Synthesis of new hetero[1,2,4]thiadiazin‐3‐one S,S‐dioxides and oxazolo[3,2‐ b ]hetero[1,2,4]thiadiazine S,S‐dioxides as potential psychotropic drugs

A series of 2‐substituted 2 H ‐thieno[3,4‐ e ][1,2,4]thiadiazin‐3(4 H )‐one 1,1‐dioxides ( 2 ), 2‐substituted 2 H ‐thieno[2,3‐ e ][1,2,4]thiadiazin‐3(4 H )‐one 1,1‐dioxides ( 3 ), 2‐substituted 4,6‐dihydropyrazolo[4,3‐ e ]‐[1,2,4]thiadiazin‐3(2 H )‐one 1,1‐dioxides ( 4 ), 2‐substituted 2,3‐dihydrooxazolo[3,2‐ b ]thieno[3,4‐ e ]‐[1,2,4]thiadiazine 5,5‐dioxides, ( 5 ), 6‐substituted 6,7‐dihydro‐2 H ‐oxazolo[3,2‐ b ]pyrazolo[4,3‐ e ][1,2,4]thia‐diazine 9,9‐dioxides ( 6 ) and 7‐substituted 6,7‐dihydro‐2 H ‐oxazolo[3,2‐ b ]pyrazolo[4,3‐ e ][1,2,4]thiadiazine 9,9‐dioxides ( 7 ) were synthesized as potential psychotropic agents.