Acyl and sulfonyl derivatives of 6,9-disubstituted...

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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C544S277000

Reexamination Certificate

active

07429595

ABSTRACT:
The present invention is directed to acyl and sulfonyl derivatives of 6,9-disubstituted 2-(trans-1,4 -diaminocyclohexyl)-purines of the formulawhere Z is selected from the group consisting of —S(O)2—, and —C(O)—.

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