6-alkoxy-pyrido-pyrimidines

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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Details

C514S258100, C544S279000, C546S112000

Reexamination Certificate

active

07105525

ABSTRACT:
The present invention provides compounds of the Formula I:wherein R1is alkyl, cycloalkyl, cycloalkylalkyl, or —CH2-alkenyl, X1is O, NH, N(alkyl), S or —C(═O), Z is N or CH; and R2and R3are as defined herein, pharmaceutical compositions comprising same, and methods for their use.

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