Design, Synthesis, and Structure–Activity Relationships of Novel Pyrazolo[5,1-<i>b</i>]thiazole Derivatives as Potent and Orally Active Corticotropin-Releasing Factor 1 Receptor Antagonists
作者:Yoshinori Takahashi、Minako Hashizume、Kogyoku Shin、Taro Terauchi、Kunitoshi Takeda、Shigeki Hibi、Kaoru Murata-Tai、Masae Fujisawa、Kodo Shikata、Ryota Taguchi、Mitsuhiro Ino、Hisashi Shibata、Masahiro Yonaga
DOI:10.1021/jm300864p
日期:2012.10.11
This paper describes the design, synthesis, and structure–activity relationships of a novel series of 7-dialkylamino-3-phenyl-6-methoxy pyrazolo[5,1-b]thiazole derivatives for use as selective antagonists of the corticotropin-releasing factor 1 (CRF1) receptor. The most promising compound, N-butyl-3-[4-(ethoxymethyl)-2,6-dimethoxyphenyl]-6-methoxy-N-(tetrahydro-2H-pyran-4-yl)pyrazolo[5,1-b][1,3]thiazole-7-amine
本文描述了一系列新的7-二烷基氨基-3-苯基-6-甲氧基吡唑并[5,1- b ]噻唑衍生物的设计,合成及结构-活性关系,这些衍生物可用作促肾上腺皮质激素释放因子的选择性拮抗剂1(CRF 1)受体。最有前途的化合物,N-丁基-3- [4-(乙氧基甲基)-2,6-二甲氧基苯基] -6-甲氧基-N-(四氢-2 H-吡喃-4-基)吡唑并[5,1- b ] [1,3]噻唑-7-胺(6t)对人CRF 1具有高亲和力(IC 50 = 70 nM)和功能拮抗作用(IC 50 = 7.1 nM)以30 mg / kg(po)的剂量对CRF诱导的血浆促肾上腺皮质激素(ACTH)浓度升高的剂量依赖性抑制以及剂量依赖性抑制。此外,在小鼠的明/暗试验中,化合物6t以30mg / kg(po)的剂量显示抗焦虑活性。