The present invention is directed to compounds useful for treating addictive behavior and sleep disorders represented by structural Formula (I)
or pharmaceutically acceptable salt forms thereof, wherein R
1
, R
5
, R
6a
, R
6b
, R
7
, R
8
, R
9
, X, b, k, m, and n, and the dashed lines are described herein. The compounds used in the method of treatment of this invention are serotonin agonists and antagonists and are useful in the control or prevention of central nervous system disorders including addictive behavior and sleep disorders.
The invention relates to a group of new annelated indolo [3,2-c] lactam derivatives of the formula
having an antagonistic activity on 5-HT receptors. The compounds can be used for the treatment of symptoms which are caused by excessive stimulation of said receptors in the gastrointestinal system, the central nervous system, the cardiovascular system, the respiratory system, and for alleviating or preventing withdrawal symptoms which are induced by abuse of drugs.