A class of rigid, dibasic, non-imidazole H-3 antagonists was developed, starting from a series of previously described flexible compounds. The original polymethylene chain between two tertiary amine groups was replaced by a rigid scaffold, composed by a phenyl ring or a biphenyl fragment. Modulation of the distance between the two amine groups, and of their alkyl substituents, was driven by superposition of molecular models and docking into a receptor model, resulting in the identification of 1,1'-[biphenyl-4,4'diylbis(methylene)]bis-piperidine (5) as a subtype-selective H-3 antagonist with high binding affinity (pK(i) = 9.47) at human H-3 histamine receptor. (c) 2006 Elsevier Ltd. All rights reserved.
Khanna; Dhar, Journal Of Scientific and Industrial Research, 1955, vol. 14B, p. 214,217
作者:Khanna、Dhar
DOI:——
日期:——
Synthesis and structure–activity relationships for biphenyl H3 receptor antagonists with moderate anti-cholinesterase activity
different. Many potent compounds showed good selectivity profiles over the other histamine receptors. Interestingly, some derivatives displayed a moderate ability to inhibit rat brain cholinesterase, for example compound 12 (1-[2-(4'-piperidinomethyl-biphenyl-4-yl)ethyl]piperidine) has a pIC(50)=5.96 for cholinesterase inhibition and high H(3) receptor binding affinity and antagonist potency (pK(i)=8