Triazolo [4,5-d] pyrimidine derivatives and their use as...

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

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Reexamination Certificate

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07405219

ABSTRACT:
The use of a compound of formula (I):whereinR1is selected from H, alkyl, aryl, alkoxy, aryloxy, alkylthio, arylthio, halogen, CN, NR5R6, NR4COR5, NR4CONR5R6, NR4CO2R7and NR4SO2R7;R2is selected from aryl attached via an unsaturated carbon;R3is selected from H, alkyl, COR5, CO2R7, CONR5R6, CONR4NR5R6and SO2R7;R4, R5and R6are independently selected from H, alkyl and aryl or where R5and R6are in an NR5R6group, R5and R6may be linked to form a heterocyclic group, or where R4, R5and R6are in a (CONR4NR5R6) group, R4and R5may be linked to form a heterocyclic group; andR7is selected from alkyl and aryl,or a pharmaceutically acceptable salt thereof or prodrug thereof, in the treatment or prevention of a disorder in which the blocking of purine receptors, particularly adenosine receptors and more particularly A2Areceptors, may be beneficial, particularly wherein said disorder is a movement disorder such as Parkinson's disease or said disorder is depression, cognitive or memory impairment, acute or chronic pain, ADHD or narcolepsy, or for neuroprotection in a subject; compounds of formula (I) for use in therapy; and novel compounds of formula (I) per se.

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