2-methyl-6-phenyl-1,2,3,4,4a,5,6,10b-octahydrobenzo-(c)-(1,6...

Details 2-methyl-6-phenyl-1,2,3,4,4a,5,6,10b-octahydrobenzo-(c)-(1,6... 2-methyl-6-phenyl-1,2,3,4,4a,5,6,10b-octahydrobenzo-(c)-(1,6...

C - Chemistry, Metallurgy

07

D

260/275.3

C07D 471/04 (2006.01)

Patent

CA 1055944

2-METHYL-6-PHENYL-1,2,3,4,4a,5,6,10b-OCTAHYDROBENZO- [c]-[1,6] NAPHTHYRIDINE COMPOUNDS Abstract of the Disclosure This invention provides new compounds of formula I, Image I wherein the indicated radical in the 8 or 9 position cf the benzonaphthyridine structure (R1) is hydrogen, alkoxy of 1 to 4 carbon atoms or hydroxy, and R2, R3 and R4 are selected in certain combinations from hydrosen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, benzyloxy, hydroxy, halogen, nitro, amino, dimethylamino, or -NHCOR5 wherein R5 is hydrogen or alkyl of 1 to 4 carbon atoms, useful as bronchospasmolytics.

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