Synthesis and Biological Evaluation of a 6-Aminofuro[3,2–c]pyridin-3(2H)-one Series of GPR 119 Agonists
作者:M. Sakairi、M. Kogami、M. Torii、Y. Kuno、Y. Ohsawa、M. Makino、D. Kataoka、R. Okamoto、T. Miyazawa、M. Inoue、N. Takahashi、S. Harada、N. Watanabe
DOI:10.1055/s-0032-1323760
日期:——
G protein-coupled receptor 119 (GPCR 119 (GPR119)) agonists have received considerable attention as a promising therapeutic option for treatment of type 2 diabetes mellitus. GPR119 is one of the GPCRs expressed in pancreatic islet β-cells and its activation enhances stimulation of insulin secretion in a glucose-dependent manner. We have recently described a series of 6-amino-1H-indan-1-ones as potent, selective, and orally bioavailable GPR119 agonists with an amino group that plays important roles not only in their drug-like properties, such as high aqueous solubility, but also in their potent agonistic activity. However, many of these compounds displayed strong to moderate inhibition of human ether-à-go-go related gene channel. Attenuation of the basicity of the amino group by replacing the adjacent benzene ring with electron-deficient heteroaromatic rings provided several heterocyclic cores among which 6-aminofuro[3,2–c]pyridin-3(2H)-one was selected as a promising scaffold. Further optimization around the side chain moiety led to the discovery of 17i, which showed not only strong human GPR119 agonistic activity (EC50=14 nM), but also beneficial effects on gastric emptying and plasma total glucagon-like peptide-1 levels in mice.
G 蛋白偶联受体 119 (GPCR 119 (GPR119)) 激动剂作为治疗 2 型糖尿病的有前景的治疗选择受到了相当多的关注。 GPR119 是胰岛β 细胞中表达的GPCR 之一,其激活以葡萄糖依赖性方式增强胰岛素分泌的刺激。我们最近描述了一系列 6-氨基-1H-茚满-1-酮,它们是有效的、选择性的、口服生物可利用的 GPR119 激动剂,其氨基不仅在其药物特性(例如高水溶性)中发挥着重要作用,还在于它们强大的竞争活动。然而,许多这些化合物对人类 ether-à-go-go 相关基因通道表现出强到中度的抑制作用。通过用缺电子杂芳环取代相邻的苯环来减弱氨基的碱性,提供了几个杂环核心,其中 6-aminofururo[3,2-c]pyridin-3(2H)-one 被选为有前途的支架。围绕侧链部分的进一步优化导致了 17i 的发现,它不仅表现出强大的人 GPR119 激动活性 (EC50=14nM),而且对小鼠胃排空和血浆总胰高血糖素肽-1 水平也有有益作用。