Isoxazolo-pyridazine derivatives

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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C544S238000

Reexamination Certificate

active

07943619

ABSTRACT:
The invention relates to isoxazolo-pyridazine compounds, in particular those of formula I as described above and to a pharmaceutically acceptable salts thereof, having affinity and selectivity for the GABA A α5 receptor binding site, their manufacture, pharmaceutical compositions containing them and their use as cognitive enhancers or for the treatment of cognitive disorders like Alzheimer's disease.

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