Benzothiazole 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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C514S318000, C514S321000, C514S338000, C514S367000, C544S130000, C544S131000, C544S135000, C546S193000, C546S198000, C546S270100, C548S163000

Reexamination Certificate

active

07371748

ABSTRACT:
This invention relates to compounds of formula IwhereinR1and R2are defined herein, or a pharmaceutically acceptable salt thereof.It has been found that the compounds of formula I are adenosine receptor ligands with good affinity to the A2A-receptor and a high selectivity to the A1- and A3receptors. These compounds are useful, inter alia, in treatment of Alzheimer's disease, depression, Parkinson's disease and ADHD.

REFERENCES:
patent: 6734179 (2004-05-01), Flohr et al.
patent: 6992083 (2006-01-01), Norcross
patent: WO 01/97786 (2001-12-01), None
patent: WO 03/045385 (2003-06-01), None
patent: WO 03/049741 (2003-06-01), None
patent: WO 03/053961 (2003-07-01), None

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