Betamimetics with a prolonged duration of activity,...

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Radical -xh acid – or anhydride – acid halide or salt thereof...

Reexamination Certificate

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Details

C564S360000, C564S361000, C564S362000

Reexamination Certificate

active

06951888

ABSTRACT:
A compound of formula 1wherein: R1is C1-C4-alkyl; R2is C1-C4-alkyl; and R3is C1-C4-alkyl or phenyl, each optionally mono- or polysubstituted, or R2and R3together are —CH2—CH2— or —CH2—CH2—CH2—, or the corresponding acid addition salt with a pharmacologically acceptable acid, processes for preparing such compounds, pharmaceutical compositions containing such compounds, and their use in the treatment of inflammatory and obstructive respiratory diseases.

REFERENCES:
patent: 3657244 (1972-04-01), Mentrup et al.
patent: 5223614 (1993-06-01), Schromm et al.
patent: 2002/0022625 (2002-02-01), Walland et al.
patent: 1 543 374 (1972-04-01), None
patent: 0 321 864 (1989-06-01), None
patent: WO 01/83462 (2001-11-01), None
Database CAPLUS on STN, Acc. No. 1969:523933, MENTRUP et al, ZA 6802425 (Nov. 8, 1968) (abstract).

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