2- (4-oxo-1-phenyl-1,3,8-triazaspiro 4.5 decan-8- yl)alkyl -1h-benz de isoquinolin-1,3 (2h)-diones

Abstract From the Canadian patent

New compounds, which exhibit antidepressant activity and are also useful as antiinflammatory agents have the following formula, wherein R1 and R2 are independently selected from hydrogen lower alkyl, lower alkoxy, lower alkylthio halogen, tri-, fluoromethyl, amino, nitro and cyano; R3 is selected from hydrogen, lower alkyl and lower alkenyl; R4 is selected from hydrogen, lower alkyl and halogen and A is a straight, or branched chain alkylene of 1 to 8 carbons; and a pharmaceutically acceptable acid addition salt thereof.