Adenine derivatives

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

C514S263210, C514S263220, C514S263370, C544S276000

Reexamination Certificate

active

10474199

ABSTRACT:
This invention relates to an adenine derivative, a tautomer thereof, or a pharmaceutically acceptable salt thereof represented by general formula (I):wherein X represents NR3(wherein R3represents a hydrogen atom or C1-3alkyl) or the like; R1represents substituted or unsubstituted alkyl or the like; R2represents hydroxyl or the like; and Y represents a substituted or unsubstituted aromatic hetero ring or the like. Also, the present invention relates to pharmaceuticals such as an interferon inducer, antiviral agent, anticancer agent, type 2 helper T cell selective immune response inhibitor, antiallergic agent, and immune response modulator comprising the above derivative as an active ingredient.

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