Arylindenopyridines and arylindenopyrimidines and related...

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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C546S111000

Reexamination Certificate

active

07345052

ABSTRACT:
This invention provides novel arylindenopyridines and arylindenopyrimidines of the formula:wherein R1, R2, R3, R4, and X are as defined above, and pharmaceutical compositions comprising same, useful for treating disorders ameliorated by antagonizing adenosine A2a receptors. This invention also provides therapeutic and prophylactic methods using the instant compounds and pharmaceutical compositions.

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