207348-21-8Relevant articles and documents
Development of Highly Affine and Selective Fluorinated Cannabinoid Type 2 Receptor Ligands
Moldovan, Rare?-Petru,Hausmann, Kristin,Deuther-Conrad, Winnie,Brust, Peter
, p. 566 - 571 (2017/05/17)
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 receptor ligand N-(adamantan-1-yl)-5-ethyl-2-methyl-1-phenyl-1H-imidazole-4-carboxamide (5). A novel series of compounds was developed by modifying (i) the adamantane-3-position, (ii) the imidazole-N-phenyl ring, and (iii) the imidazole-2-position, and the impact on the CB2 binding affinity and selectivity toward cannabinoid type 1 receptors (CB1) was evaluated. This study identified compound 15 as one of the most potent (Ki(CB2) = 0.29 nM) and selective (CB1/CB2 > 10000) CB2receptor ligands discovered so far, eligible for the development of an18F-labeled PET radiotracer.
Synthesis and SAR of novel imidazoles as potent and selective cannabinoid CB2 receptor antagonists with high binding efficiencies
Lange, Jos H.M.,van der Neut, Martina A.W.,Wals, Henri C.,Kuil, Gijs D.,Borst, Alice J.M.,Mulder, Arie,den Hartog, Arnold P.,Zilaout, Hicham,Goutier, Wouter,van Stuivenberg, Herman H.,van Vliet, Bernard J.
scheme or table, p. 1084 - 1089 (2010/06/11)
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 cannabinoid CB2 receptor antagonists/inverse agonists with very high binding efficiencies in combination with favourable log P and calculated polar surface area values. Compound 12 exhibited the highest CB2 receptor affinity (Ki = 1.03 nM) in this series, as well as the highest CB2/CB1 subtype selectivity (>9708-fold).
Pd-catalyzed enantioselective synthesis of quaternary α-amino acid derivatives using a phenylalanine-derived P-chirogenic diaminophosphine oxide
Nemoto, Tetsuhiro,Harada, Teisuke,Matsumoto, Takayoshi,Hamada, Yasumasa
, p. 6304 - 6307 (2008/02/10)
A Pd-catalyzed enantioselective synthesis of quaternary α-amino acid derivatives using a phenylalanine-derived P-chirogenic diaminophosphine oxide is described. Asymmetric allylic substitution using acyclic β-keto esters with a nitrogen functional group at the α-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 α-amino acid derivatives in excellent yield and in up to 92% ee.