Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Patent
1989-11-17
1991-11-26
Springer, David B.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
548452, C07D20952, A61K 3140
Patent
active
050682423
ABSTRACT:
The present invention relates to compounds of the formula I ##STR1## in which R.sup.1 to R.sup.4 are defined in the description, processes for their preparation, their use for the treatment and prophylaxis of cognitive dysfunctions and pharmaceuticals containing them and processes for their preparation.
REFERENCES:
patent: 4668796 (1987-05-01), Geiger et al.
Hock Franz
Nickel Wolf-Ulrich
Ruger Wolfgang
Urbach Hansjorg
Hoechst Aktiengesellschaft
Springer David B.
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