Heterotetracyclic lactam derivatives

Details Heterotetracyclic lactam derivatives Heterotetracyclic lactam derivatives

1989-10-24

1991-03-05

Shah, Mukund J.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Heterocyclic carbon compounds containing a hetero ring...

514219, 514253, 514288, 540546, 540578, 544343, 546 70, A61K 3155, A61K 31445, A61K 31495, C07D20900

Patent

active

049978322

ABSTRACT:
Disclosed are the compounds of formula I ##STR1## wherein R.sub.1 -R.sub.3 represent hy drogen or lower alkyl; m represents the integer 2 or 3; n represents the integer 1 or 2; Het represents a pyrrole or imidazole ring bonded at any two adjacent positions and optionally substituted by one or two of lower alkyl; and pharmaceutically acceptable salts of compounds of formula I wherein Het represents optionally substituted imidazole; their methods of preparation; pharmaceutical compositions thereof, and their use for treating cognitive disorders in mammals.

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