Benzimidazole derivatives

Details Benzimidazole derivatives Benzimidazole derivatives

2005-03-22

2005-03-22

Stockton, Laura L. (Department: 1626)

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Heterocyclic carbon compounds containing a hetero ring...

C514S394000, C544S139000, C548S310100, C548S304400, C548S304700

Reexamination Certificate

active

06869950

ABSTRACT:
The present invention provides novel benzimidazole derivatives of the following formula (I) and salts thereof:wherein R1represents a lower alkyl group or a lower alkyloxy-lower alkyl group; R2represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 8 carbon atoms, an aryl group, and such; R3represents a lower alkyl group, a lower alkenyl group, an aryl group, a lower alkylaryl group, an aryl-lower alkenyl group, a halothienyl group, a lower alkylamino group, or an aryl-lower alkylamino group; A represents a benzene ring, a naphthalene ring, or a pyridine ring; and X represents a halogen atom. The derivatives and their salts have blood sugar level-depressing activity or PDE5-inhibiting activity, and are useful as pharmaceutical preparations.

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