Identification and optimisation of 5-amino-7-aryldihydro-1,4-diazepines as 5-HT2A ligands

A several series of low molecular weight 5-HT2A leads were identified from an analysis of HTS data, the exploration of SAR and optimization of one series using parallel synthesis are described, affording compound 22 (5-HT2A IC50 1.1 nM).