Abstract: The present invention relates to novel biologically active tricyclic compounds of the general formula: ##STR1## and salts thereof, in whichR.sub.1 and R.sub.2 stand for hydrogen, alkyl or alkenyl, an optionally substituted aralkyl group or an acyl group orR.sub.1 +R.sub.2 together with the nitrogen atom represent a heterocyclic 5- or 6-membered ring, andX and Y stand for hydrogen, hydroxy, halogen, alkyl or alkoxy of 1-6 carbon atoms, nitro, trifluoromethyl or an acyloxy group,which compounds have valuable biological activities, particularly anorectic activity.

Abstract: The present invention relates to novel biologically active tricyclic compounds of the general formula: ##STR1## and salts thereof, in whichR.sub.1 and R.sub.2 stand for hydrogen, alkyl or alkenyl, an optionally substituted aralkyl group or an acyl group orR.sub.1 +R.sub.2 together with the nitrogen atom represent a heterocyclic 5- or 6-membered ring, andX and Y stand for hydrogen, hydroxy, halogen, alkyl or alkoxy of 1-6 carbon atoms, nitro, trifluoromethyl or an acyloxy group,which compounds have valuable biological activities, particularly anorectic activity.

Abstract: The invention relates to novel compounds of general formula I: ##STR1## and salts, esters and amides thereof, in which R.sub.1 and R.sub.2 represent hydrogen, alkyl or alkenyl (1-4 C),R.sub.3 represents hydrogen, halogen, hydroxy, alkyl (1-4 C) or alkoxy (1-4 C),n has the value 0, 1 or 2 andALK is a saturated or unsaturated hydrocarbon radical with 3-12 carbon atoms, in which a straight carbon chain in between the benzene rings is present, containing 3-8 carbon atoms, andthe dotted line indicates an optional extra bond between the first and second carbon counted from the phenyl ring, in case of an extra bond the group R.sub.2 and one hydrogen attached to said second carbon being absent, having valuable hypocholesterolaemic and hypotriglyceriolaemic properties.

Abstract: The present invention relates to novel benzo(b) bicyclo[3.3.1]nones of the general formula I: ##STR1## and a salt or nitrogen oxide thereof, in which R.sub.1 and R.sub.2 stand for hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 1-6 carbon atoms, an optionally substituted aralkyl group or an acyl group orR.sub.1 and R.sub.2 together with the nitrogen atom represent a heterocyclic 5- or 6-membered ringR.sub.3 is a free, etherified or esterified hydroxy,X and Y stand for hydrogen, hydroxy, halogen, alkyl or alkoxy of 1-6 C-atoms, nitro, CF.sub.3 or an acyloxy group, having valuable biological activities, particularly anorectic activity.