RESUMO
A high-throughput screen of the ligand binding domain of the nuclear receptor retinoic acid-related orphan receptor gamma t (RORγt) employing a thermal shift assay yielded a quinoline tertiary alcohol hit. Optimization of the 2-, 3- and 4-positions of the quinoline core using structure-activity relationships and structure-based drug design methods led to the discovery of a series of modulators with improved RORγt inhibitory potency and inverse agonism properties.
Assuntos
Desenho de Fármacos , Agonismo Inverso de Drogas , Membro 3 do Grupo F da Subfamília 1 de Receptores Nucleares/antagonistas & inibidores , Quinolinas/química , Quinolinas/farmacologia , Humanos , Simulação de Acoplamento Molecular , Membro 3 do Grupo F da Subfamília 1 de Receptores Nucleares/metabolismo , Relação Estrutura-Atividade , Células Th17/efeitos dos fármacosRESUMO
We identified 6-substituted quinolines as modulators of the retinoic acid receptor-related orphan receptor gamma t (RORγt). The synthesis of this class of RORγt modulators is reported, and optimization of the substituents at the quinoline 6-position that produced compounds with high affinity for the receptor is detailed. This effort identified molecules that act as potent, full inverse agonists in a RORγt-driven cell-based reporter assay. The X-ray crystal structures of two full inverse agonists from this chemical series bound to the RORγt ligand binding domain are disclosed, and we highlight the interaction of a hydrogen-bond acceptor on the 6-position substituent of the inverse agonist with Glu379:NH as a conserved binding contact.
Assuntos
Membro 3 do Grupo F da Subfamília 1 de Receptores Nucleares/agonistas , Quinolinas/farmacologia , Cristalografia por Raios X , Relação Dose-Resposta a Droga , Humanos , Ligantes , Modelos Moleculares , Estrutura Molecular , Quinolinas/síntese química , Quinolinas/química , Relação Estrutura-AtividadeRESUMO
A series of indole-O-glucosides and C-glucosides was synthesized and evaluated in SGLT1 and SGLT2 cell-based functional assays. Compounds 2a and 2o were identified as potent SGLT2 inhibitors and screened in ZDF rats.
Assuntos
Glucosídeos/química , Glucosídeos/farmacologia , Indóis/química , Inibidores do Transportador 2 de Sódio-Glicose , Animais , Diabetes Mellitus Experimental/urina , Glucose/metabolismo , Glucosídeos/síntese química , Estrutura Molecular , Ratos , Ratos Zucker , Transportador 1 de Glucose-Sódio/antagonistas & inibidoresRESUMO
A series of benzo-fused heteroaryl-O-glucosides was synthesized and evaluated in SGLT1 and 2 cell-based functional assays. Indole-O-glucoside 10a and benzimidazole-O-glucoside 18 exhibited potent in vitro SGLT2 inhibitory activity.
Assuntos
Glucosídeos/química , Glucosídeos/farmacologia , Inibidores do Transportador 2 de Sódio-Glicose , Glucosídeos/síntese química , Humanos , Estrutura MolecularRESUMO
A number of 2,5-disubstituted benzothiazepines were synthesized and screened for their ability to inhibit arginine vasopressin binding to the human V(2) and V(1a) receptor subtypes. The more active compounds were subsequently analyzed for their antagonist activity in in vitro functional assays. The SAR showed a preference for an acidic unit appended from the benzothiazepine scaffold. This substitution pattern afforded the most potent and selective analogues in the series. The carboxymethyl analogue 4, showed a 140-fold greater selectivity for the V(2) over the V(1a) receptor in the binding assay. In the cell-based functional assays this analogue was a potent and selective antagonist of the V(2) receptor. The in vitro SAR of the series and a description of the in vivo studies around compound 4 is described.