Discovery of novel 5-oxa-2,6-diazaspiro[3.4]oct-6-ene derivatives as potent, selective, and orally available somatostatin receptor subtype 5 (SSTR5) antagonists for treatment of type 2 diabetes mellitus
作者:Hideki Hirose、Takeshi Yamasaki、Masaki Ogino、Ryo Mizojiri、Yumiko Tamura-Okano、Hiroaki Yashiro、Yo Muraki、Yoshihide Nakano、Jun Sugama、Akito Hata、Shinji Iwasaki、Masanori Watanabe、Tsuyoshi Maekawa、Shizuo Kasai
DOI:10.1016/j.bmc.2017.06.007
日期:2017.8
enhancement in potency, however, the 4-benzoic acid derivative 10c exhibited moderate human ether-a-go-go related gene (hERG) inhibitory activity. A subsequent optimization study revealed that replacement of the 4-benzoic acid with an isonipecotic acid dramatically reduced hERG inhibition (5.6% inhibition at 30 μM) by eliminating π-related interaction with hERG K+ channel, which resulted in the identification
生长抑素受体亚型5(SSTR5)已成为2型糖尿病的新型有吸引力的药物靶标。从作为内部命中化合物的N-苄基氮杂环丁烷衍生物1和2开始,我们探索了将羧基引入1的末端苯中以通过异恶唑啉3位上的取代基的组合增强SSTR5拮抗活性的方法。 。在苯环的4位上引入羧基会显着提高效力,但是4-苯甲酸衍生物10c表现出中等程度的人类以太相关基因(hERG)抑制活性。随后的优化研究表明,通过消除与hERG K +通道的π相关相互作用,用异二十二烷酸替换4-苯甲酸显着降低了hERG抑制(在30μM时抑制5.6%),从而鉴定出1-( 2-(((2,6-二乙氧基-4'-氟联苯-4-基)甲基)-5-氧杂-2,6-二氮杂螺[3.4] oct-6-en-7-yl)哌啶-4-羧酸25a(hSSTR5 / mSSTR5 IC 50 = 9.6 / 57 nM)。在高脂饮食喂养的C57BL / 6J小鼠中口服25a可以以葡萄