Design and Synthesis of Novel α<sub>1</sub><sub>a</sub> Adrenoceptor-Selective Antagonists. 2. Approaches To Eliminate Opioid Agonist Metabolites via Modification of Linker and 4-Methoxycarbonyl-4-phenylpiperidine Moiety
作者:T. G. Murali Dhar、Dhanapalan Nagarathnam、Mohammad R. Marzabadi、Bharat Lagu、Wai C. Wong、George Chiu、Sriram Tyagarajan、Shou Wu Miao、Fengqi Zhang、Wanying Sun、Dake Tian、Quanrong Shen、Jack Zhang、John M. Wetzel、Carlos Forray、Raymond S. L. Chang、Theodore P. Broten、Terry W. Schorn、Tsing Bao Chen、Stacy O'Malley、Richard Ransom、Kathryn Schneck、Robert Bendesky、Charles M. Harrell、Kamlesh P. Vyas、Kanyin Zhang、John Gilbert、Douglas J. Pettibone、Michael A. Patane、Mark G. Bock、Roger M. Freidinger、Charles Gluchowski
DOI:10.1021/jm990201h
日期:1999.11.1
by modification of the linker or finding alternative piperidine moieties which when cleaved as a consequence of metabolism would not give rise to mu-opioid activity. Modification of the linker gave several compounds with good alpha(1a) binding affinity (K(i) = < 1 nM) and selectivity (>300-fold over alpha(1b) and alpha(1d)). In vitro analysis in the microsomal assay revealed these modifications did
先前我们已经将化合物1a描述为高亲和力亚型选择性alpha(1a)拮抗剂。化合物1a的体外和体内评估表明,其主要代谢产物为mu阿片类激动剂4-甲氧基羰基-4-苯基哌啶(3)。合成了几种二氢嘧啶酮类似物,其目的是通过修饰接头来使3的形成减至最少,或寻找替代的哌啶部分,当由于代谢作用而裂解时,其不会产生μ阿片样物质的活性。接头的修饰产生了几种具有良好的alpha(1a)结合亲和力(K(i)= <1 nM)和选择性(大于alpha(1b)和alpha(1d)的300倍)的化合物。微粒体测定法中的体外分析显示,这些修饰不会显着影响N-脱烷基和哌啶3的形成。第二种方法是 然而,产生了3个哌啶替代物,它们没有显示出明显的μ阿片样物质活性。这些化合物中的几种在α(1a)肾上腺素受体上保持了良好的亲和力,并且对alpha(1b)和alpha(1d)的选择性很高。例如,(+)-73和(+)-83的哌啶片段,