Download PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Based on a pharmacophore alignment on a 5-HT 6 ligand applying 4SCan ® technology, a new lead series was identified and further structurally investigated. K i s down to 8 nM were achieved. ... The discovery and SAR studies of 5-HT 6 ligands are described. ... As crystal structure data ...