177966-65-3Relevant articles and documents
Design, Synthesis, and Structure-Activity Relationship Studies of (4-Alkoxyphenyl)glycinamides and Bioisosteric 1,3,4-Oxadiazoles as GPR88 Agonists
Rahman, Md Toufiqur,Decker, Ann M.,Langston, Tiffany L.,Mathews, Kelly M.,Laudermilk, Lucas,Maitra, Rangan,Ma, Weiya,Darcq, Emmanuel,Kieffer, Brigitte L.,Jin, Chunyang
, p. 14989 - 15012 (2020/11/30)
Increasing evidence implicates the orphan G protein-coupled receptor 88 (GPR88) in a number of striatal-associated disorders. In this study, we report the design and synthesis of a series of novel (4-alkoxyphenyl)glycinamides (e.g., 31) and the corresponding 1,3,4-oxadiazole bioisosteres derived from the 2-AMPP scaffold (1) as GPR88 agonists. The 5-amino-1,3,4-oxadiazole derivatives (84, 88-90) had significantly improved potency and lower lipophilicity compared to 2-AMPP. Compound 84 had an EC50 of 59 nM in the GPR88 overexpressing cell-based cAMP assay. In addition, 84 had an EC50 of 942 nM in the [35S]GTPγS binding assay using mouse striatal membranes but was inactive in membranes from GPR88 knockout mice, even at a concentration of 100 μM. In vivo pharmacokinetic testing of 90 in rats revealed that the 5-amino-1,3,4-oxadiazole analogues may have limited brain permeability. Taken together, these results provide the basis for further optimization to develop a suitable agonist to probe GPR88 functions in the brain.
BENZYLAMINE ANALOGUE
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Page/Page column 94, (2008/06/13)
A compound of the formula (I): [wherein R1 represents a C1-C6 alkyl group etc., R2 and R3 are the same or different and represent a hydrogen atom etc., Ra represents a C1-C6 alkyl group etc., Arom represents an aryl group etc., A represents a C1-C6 alkylene group, E represents a single bond, an oxygen atom, a sulfur atom etc., X1 and X2 are the same or different and represent an oxygen atom or a sulfur atom] or a pharmacologically acceptable salt or ester thereof.