1-Substituted-4-phenyl-4H-{8 1,2,4{9 triazolo{8 3,4-C{9 {8 1,4{9 {0 benzothiazines or benzoxazines

摘要

Compounds of the following formula and their pharmaceutically acceptable acid addition salts WHEREIN R is alkyl of 1 to 4 carbons or X, X1 and X2 are independently selected from hydrogen, halogen, trifluoromethyl, alkyl of 1 to 4 carbons, and alkoxy of 1 to 4 carbons, and Y is oxygen or sulfur; are disclosed. These compounds are useful as central nervous system depressants and in particular as anti-anxiety agents.