8-Chloro-5-(4-phenethylpiperazin-1--yl)pyrido[2,3-b][1,5]benzoxazepine.

As part of an anti-psychotic drug discovery program, we report the crystal structure of the title compound, C(24)H(23)ClN(4)O. The mol-ecule has a tricyclic framework with a characteristic buckled V-shaped pyridobenzoxazepine unit, with the central seven-membered heterocycle in a boat configuration. The piperazine ring displays a chair conformation with the 2-phenyl-ethyl substituent assuming an equatorial orientation.

Molecular mapping in the CNS.

Since ancient times the operation of the brain has elicited more than usual interest. Data mining of the human genome is revealing that many CNS abnormalities have a genetic component. As yet this information can not be used directly to cure or ameliorate specific CNS disorders although this is regarded as having great potential for future therapies.