Synthesis and SAR of novel imidazoles as potent and selective cannabinoid CB2 receptor antagonists with high binding efficiencies
作者:Jos H.M. Lange、Martina A.W. van der Neut、Henri C. Wals、Gijs D. Kuil、Alice J.M. Borst、Arie Mulder、Arnold P. den Hartog、Hicham Zilaout、Wouter Goutier、Herman H. van Stuivenberg、Bernard J. van Vliet
DOI:10.1016/j.bmcl.2009.12.032
日期:2010.2
The synthesis and structure–activity relationship studies of imidazoles are described. The target compounds 6–20 represent a novel chemotype of potent and CB2/CB1 selective cannabinoidCB2receptor antagonists/inverse agonists with veryhigh binding efficiencies in combination with favourable log P and calculated polar surface area values. Compound 12 exhibited the highest CB2receptoraffinity (Ki = 1
A Pd-catalyzed enantio selective synthesis of quaternary alpha-amino acid derivatives using a phenylalanine-derived P-chirogenic diaminophosphine oxide is described. Asymmetric allylic substitution using acyclic beta-keto esters with a nitrogen functional group at the alpha-carbon as prochiral nucleophiles proceeded in the presence of 5 mol % of Pd catalyst, 10 mol % of chiral diaminophosphine oxide 1j, BSA, and appropriate additives, affording the corresponding quaternary alpha-amino acid derivatives in excellent yield and in up to 92% ee. (c) 2007 Elsevier Ltd. All rights reserved.
Catalytic Asymmetric Allylation of Prochiral Nucleophiles, α-Acetamido-β-ketoesters
作者:Ryoichi Kuwano、Yoshihiko Ito
DOI:10.1021/ja9900104
日期:1999.4.1
Development of Highly Affine and Selective Fluorinated Cannabinoid Type 2 Receptor Ligands
Cannabinoid type 2 receptors (CB2 receptors) are involved in various pathological processes, and the visualization of their in vivo availability with positron emission tomography (PET) is of high interest. The study focuses on the introduction of fluorine into the structure of the highly affine and selective CB2 receptorligand N-(adamantan-1-yl)-5-ethyl-2-methyl-1-phenyl-1H-imidazole-4-carboxamide