Benzog!quinoline derivatives
 The invention provides compounds of formula I ##STR1## wherein X, Y, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are as defined in the description, and a process for preparing them. The compounds of formula I are useful as pharmaceuticals. 
Novartis AG
C A A C C A C A A A A A
C07D A61P A61P C07D C07D A61P C07D A61P A61P A61P A61P A61P
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Max Peter Peter Robert Paul
Seiler Neumann Swoboda Pfaeffli