α<sub>2</sub>-Adrenoreceptors Profile Modulation. 2. Biphenyline Analogues as Tools for Selective Activation of the α<sub>2C</sub>-Subtype
作者:Francesco Gentili、Francesca Ghelfi、Mario Giannella、Alessandro Piergentili、Maria Pigini、Wilma Quaglia、Cristian Vesprini、Pierre-Antoine Crassous、Hervé Paris、Antonio Carrieri
DOI:10.1021/jm0408215
日期:2004.12.1
A series of derivatives structurally related to biphenyline (3) was designed with the aim to modulate selectivity toward the alpha(2)-AR subtypes. The results obtained demonstrated that the presence of a correctly oriented function with positive electronic effect (+sigma) in portion X of the ligands is an important factor for significant alpha(2C)-subtype selectivity (imidazolines 5, 13, 16, and 19). Homology modeling and docking studies support experimental data and highlight the crucial role for the hydrogen bond between the pyridine nitrogen in. position 3 of 5 and the NH-indole ring of Trp6.48, which is favorably oriented in the alpha(2C)-subtype, only.