Disubstituted polycyclic systems and preparative methods therefo

Details Disubstituted polycyclic systems and preparative methods therefo Disubstituted polycyclic systems and preparative methods therefo

1993-09-10

1995-06-13

Rotman, Alan L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

544333, 544405, C07D22116, C07D22106

Patent

active

054244307

ABSTRACT:
Polycyclic cognition enhancers having the general formula (1a), (1b) or (1c) are provided: ##STR1## wherein: R.sub.1 is a heterocyclic aromatic moiety such as a 4-pyridyl, 2-pyridyl, 4-pyrimidyl, or pyrazinyl group;

REFERENCES:
patent: 5173489 (1992-12-01), Earl et al.
Chemical Abstracts 96:51689w, 1982.

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