Figure 1.

Structures of the most promising histamine H₃R ligands with cholinesterase inhibitory activity from the last 3 years. hH₃R—human H₃R; eeAChE—AChE from electric eel; eqBuChE—BuChE from equine serum; mbAChE—AChE extracted from mouse brains; mpAChE—AChE extracted from mouse plasma. ^a Data from [17]; ^b data from [18]; ^c data from [19]; ^d data from [20]; ^e data from [21]; ^f data from [22].