Tricyclic Imidazoline Derivatives as Potent and Selective Adenosine A<sub>1</sub> Receptor Antagonists
作者:Chi B. Vu、William F. Kiesman、Patrick R. Conlon、Ko-Chung Lin、Melissa Tam、Russell C. Petter、Glenn Smits、Frank Lutterodt、Xiaowei Jin、Liqing Chen、Jianbo Zhang
DOI:10.1021/jm060539t
日期:2006.11.30
imidazoline antagonists of the adenosine A1 receptor are described. For key compounds, the selectivity level over other adenosine receptor subtypes is examined along with their in vivo effects in a rat diuresis model. Compound 14, the (R)-isomer of 7,8-dihydro-8-ethyl-2-(4-bicyclo[2.2.2]octan-1-ol)-4-propyl-1H-imidazo[2,1-i]puri n-5(4H)-one, is a particularly potent adenosine A1 receptor antagonist with good
描述了腺苷A1受体的新型三环咪唑啉拮抗剂。对于关键化合物,在大鼠利尿模型中检查了对其他腺苷受体亚型的选择性水平以及它们的体内作用。化合物14,7,8-二氢-8-乙基-2-(4-双环[2.2.2]辛烷-1-醇)-4-丙基-1H-咪唑并[2,1-]的(R)-异构体puri n-5(4H)-one是一种特别有效的腺苷A1受体拮抗剂,对其他三种腺苷亚型具有良好的选择性:A1(人)Ki = 22 nM;A2A(人类)Ki = 4400 nM;A2B(人类)Ki = 580 nM; A3(人类)Ki>或= 10,000 nM。咪唑啉14是一种竞争性腺苷A1受体拮抗剂,pA2值为8.88,可高度溶于水(> 100 mg / mL)。此外,它在大鼠中的口服生物利用度为84%,口服半衰期为3.8小时。在大鼠利尿模型中口服时,化合物14促进钠排泄(ED50 = 0.01 mg / kg)。该功效水平可与BG9