due to a change in the rate-determining step upon changing the acylsubstituent X, but due to resonance demand of the pi-electron donor substituent on the acyl moiety. The magnitude of the rho(X) and beta(nuc) values increases with increasing the basicity of amines and with increasing the electron-withdrawing ability of the acylsubstituent X, respectively, while that of the r values decreases with increasing
Discovery of Novel Lead in the Group of N-substituted Piperazine Ether Derivatives with Potential Histamine H<sub>3</sub> Receptor Activity
The search for novel lead from the group of various substituted N-piperazine ether derivatives was performed. Acyl- and pyridylpiperazine ethyl/propyl ethers were obtained via three different synthetic pathways. Affinity to histamine H3 receptor was established, as well as, for selected compounds, selectivity towards histamine H4R. Docking studies to the histamine H3R homology model strengthened the