Tricyclic ortho-fused nitrogen- containing compounds

摘要

Compounds of the formula [wherein R and R1 are each hydrogen, fluorine, chlorine, bromine or C1-C4 alkoxy; A is -CH2-, -(CH2)2-, -CH=CH- or -(CH2)3-; X is N or CH] and pharmaceutically acceptable acid addition salts thereof have anti-reproductive utility.