Relationship between Stereochemistry and the β<sub>3</sub>-Adrenoceptor Agonistic Activity of 4‘-Hydroxynorephedrine Derivative as an Agent for Treatment of Frequent Urination and Urinary Incontinence
作者:Nobuyuki Tanaka、Tetsuro Tamai、Harunobu Mukaiyama、Akihito Hirabayashi、Hideyuki Muranaka、Takehiro Ishikawa、Junichi Kobayashi、Satoshi Akahane、Masuo Akahane
DOI:10.1021/jm020177z
日期:2003.1.1
were synthesized via oxazolidinone prepared by intracyclization involving inversion of the beta-hydroxy group. The in vitro assays using rat atria for beta(1)-AR, rat uteri for beta(2)-AR, and ferret detrusor for beta(3)-AR showed that 1a possessed potent beta(3)-AR agonistic activity (EC(50) = 3.85 nM) and 3700- and 1700-fold selectivity for beta(3)-AR relative to beta(1)- and beta(2)-AR, respectively
该报告提出了一个β(3)-肾上腺素能受体(AR)选择性激动剂2- [2-氯-4-(2-([[(1S,2R)-2-羟基-2-(4-羟基苯基)-1-甲基乙基]氨基)乙基1)苯氧基]乙酸(1a),作为治疗膀胱功能障碍的新型药物。该化合物及其亲缘化合物在β(3)-AR激动剂中具有独特的功能:两个手性碳原子相邻排列在分子的左侧。为了研究邻位手性碳在1a中的立体构型与β-AR激动活性之间的关系,通过恶唑烷酮合成四种立体异构体,恶唑烷酮是通过涉及β-羟基反转的环内反应制备的。使用大鼠心房的beta(1)-AR,大鼠子宫的beta(2)-AR和雪貂逼尿肌进行beta(3)-AR的体外测定法显示1a具有强大的beta(3)-AR激动活性(EC (50)= 3。相对于beta(1)-和beta(2)-AR的beta(3)-AR选择性分别为85 nM)和3700-和1700-倍选择性。四种异构体的比较表明,(a