3,4-Dihydro-2H-benzoxazinones as dual-acting 5-HT1A receptor antagonists and serotonin reuptake inhibitors

Investigation of halogen substitution in lead compound 1 has led to the identification of analogues which combine high affinity for 5-HT1A receptors and potent serotonin reuptake inhibitory activity. Several compounds show an improved selectivity over 5-HT1B and 5-HT1D receptors and a superior pharmacokinetic profile in the rat.