Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...
Patent
1990-12-03
1992-08-04
Berch, Mark L.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Heterocyclic carbon compounds containing a hetero ring...
540556, 544343, C07D47116, C07D48716, A61K 3155, A61K 31495
Patent
active
051359308
ABSTRACT:
Novel hydrogenated heterocyclic compounds, containing two nitrogen atoms, of the formula ##STR1## in which R.sub.1, R.sub.2, R.sub.3, R.sub.5 and R.sub.7 are each, independently of the others, hydrogen or lower alkyl, m is 2 or 3, n is 1 or 2, and either R.sub.4 and R.sub.6 are each hydrogen or R.sub.4 and R.sub.6 together form an additional bond, in free form or in form of a salt, can be used as pharmaceutical active ingredients for memory improvement and can be manufactured in a manner known per se.
REFERENCES:
patent: 4897399 (1990-01-01), Wasley
patent: 4997832 (1991-03-01), Wasley
patent: 5015645 (1991-05-01), Wasley
Frostl Wolfgang
Mondadori Cesare
Strub Dietrich
Zust Armin
Berch Mark L.
Ciba-Geigy Corporation
Fishman Irving M.
Kaiser Karen G.
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