TY - JOUR
T1 - Selective Allosteric Antagonists for the G Protein-Coupled Receptor GPRC6A Based on the 2-Phenylindole Privileged Structure Scaffold
AU - Johansson, Henrik
AU - Boesgaard, Michael Worch
AU - Nørskov-Lauritsen, Lenea
AU - Larsen, Inna
AU - Kuhne, Sebastiaan
AU - Gloriam, David E
AU - Bräuner-Osborne, Hans
AU - Sejer Pedersen, Daniel
PY - 2015/11/25
Y1 - 2015/11/25
N2 - G protein-coupled receptors (GPCRs) represent a biological target class of fundamental importance in drug therapy. The GPRC6A receptor is a newly deorphanized class C GPCR that we recently reported for the first allosteric antagonists based on the 2-arylindole privileged structure scaffold (e.g., 1-3). Herein, we present the first structure-activity relationship study for the 2-arylindole antagonist 3, comprising the design, synthesis, and pharmacological evaluation of a focused library of 3-substituted 2-arylindoles. In a FRET-based inositol monophosphate (IP1) assay we identified compounds 7, 13e, and 34b as antagonists at the GPRC6A receptor in the low micromolar range and show that 7 and 34b display >9-fold selectivity for the GPRC6A receptor over related GPCRs, making 7 and 34b the most potent and selective antagonists for the GPRC6A receptor reported to date.
AB - G protein-coupled receptors (GPCRs) represent a biological target class of fundamental importance in drug therapy. The GPRC6A receptor is a newly deorphanized class C GPCR that we recently reported for the first allosteric antagonists based on the 2-arylindole privileged structure scaffold (e.g., 1-3). Herein, we present the first structure-activity relationship study for the 2-arylindole antagonist 3, comprising the design, synthesis, and pharmacological evaluation of a focused library of 3-substituted 2-arylindoles. In a FRET-based inositol monophosphate (IP1) assay we identified compounds 7, 13e, and 34b as antagonists at the GPRC6A receptor in the low micromolar range and show that 7 and 34b display >9-fold selectivity for the GPRC6A receptor over related GPCRs, making 7 and 34b the most potent and selective antagonists for the GPRC6A receptor reported to date.
U2 - 10.1021/acs.jmedchem.5b01254
DO - 10.1021/acs.jmedchem.5b01254
M3 - Journal article
C2 - 26516782
SN - 0022-2623
VL - 58
SP - 8938
EP - 8951
JO - Journal of Medicinal Chemistry
JF - Journal of Medicinal Chemistry
IS - 22
ER -