RESUMO
The design, synthesis, and structure-activity relationship (SAR) for a series of ß-substituted 3-(4-aryloxyaryl)propanoic acid GPR40 agonists is described. Systematic replacement of the pendant aryloxy group led to identification of potent GPR40 agonists. In order to identify candidates suitable for in vivo validation of the target, serum shifted potency and pharmacokinetic properties were determined for several compounds. Finally, further profiling of compound 7 is presented, including demonstration of enhanced glucose tolerance in an in vivo mouse model.
Assuntos
Hipoglicemiantes/farmacologia , Ilhotas Pancreáticas/efeitos dos fármacos , Propionatos/síntese química , Propionatos/farmacologia , Receptores Acoplados a Proteínas G/agonistas , Animais , Ciclização , Modelos Animais de Doenças , Hipoglicemiantes/síntese química , Hipoglicemiantes/química , Hipoglicemiantes/farmacocinética , Concentração Inibidora 50 , Camundongos , Estrutura Molecular , Propionatos/química , Propionatos/farmacocinéticaRESUMO
[reaction: see text] Glucal 3-carbamates 1 and 7 underwent oxidative cyclization with iodobenzene diacetate or iodosobenzene in the presence of Rh2(OAc)4, providing mannosamine 2-N,3-O-oxazolidinones. With iodosobenzene, incorporation of 4-penten-1-ol provided a readily separable anomeric mixture of n-pentenyl glycosides, with the anomers exhibiting pronounced differences in reactivity as glycosyl donors. N-acylation of the sugar oxazolidinones led to alpha-selective glycosyl donors for the elaboration of various 2-mannosamine frameworks. Alternatively, the anomeric n-pentenyl glycosides of N-Cbz 2-mannosamine oxazolidinones were converted separately to oxazolidinone-opened derivatives 28alpha and 28beta. These served as stereoconvergent glycosyl donors, and the alpha-linked products were readily advanced to a variety of N-acetylmannosamine (ManNAc) frameworks, using an intramolecular O-->N acetyl transfer as the final step.