Benzofuran derivative

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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C544S238000

Reexamination Certificate

active

07314877

ABSTRACT:
The present invention is directed to a compound represented by formula (1):(wherein R1represents an alkyl group which may have a substituent or an alkenyl group which may have a substituent; andeach of R2and R3represents a hydrogen atom, an alkyl group, a hydroxyalkyl group, a dihydroxyalkyl group, or an alkynyl group, or R2and R3form, together with the nitrogen atom adjacent thereto, a nitrogen-containing saturated heterocyclic group which may have a substituent) and a drug composition containing the compound. The compound exhibits tumor necrosis factor (TNF-α) production inhibitory effect and improved absorption upon oral administration.

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