Inhibitors of cyclic AMP phosphodiesterase. 3. Synthesis and biological evaluation of pyrido and imidazolyl analogs of 1,2,3,5-tetrahydro-2-oxoimidazo[2,1-b]quinazoline
作者:Michael C. Venuti、Robert A. Stephenson、Robert Alvarez、John J. Bruno、Arthur M. Strosberg
DOI:10.1021/jm00119a014
日期:1988.11
Hybridization of structural elements of 1,2,3,5-tetrahydro-2-oxoimidazo[2,1-b]quinazoline ring system common to the cyclic AMP (cAMP) phosphodiesterase (PDE) inhibitors lixazinone (RS-82856, 1) and anagrelide (3) with complementary features of other PDE inhibitor cardiotonic agents prompted the design and synthesis of the title compounds 7a-d, 11, 12, and 13a,b. The necessary features of these compounds
与环状AMP(cAMP)磷酸二酯酶(PDE)抑制剂lixazinone(RS-82856,1)共同的1,2,3,5-四氢-2-氧杂咪唑并[2,1-b]喹唑啉环系统的结构元件杂交具有其他PDE抑制剂强心剂的互补特征的anagrelide(3)促进了标题化合物7a-d,11、12和13a,b的设计和合成。这些化合物的必要特征是在拟议的活性位点模型框架内确定的,用于cGMP(IV型)抑制的cAMP PDE的高亲和力形式。对这些靶点的评估(无论是体外作为血小板或心脏IV型PDE的抑制剂,还是体内作为戊巴比妥麻醉的充血性心力衰竭狗模型中的变力剂),都表明这些结构与母体杂环系统相比具有微不足道的增强活性,并且在所有方面均明显低于1。这种差异归因于不存在1的N-环己基-N-甲基丁酰胺基-4-氧基侧链。有人提出酸性内酰胺型官能团是IV型PDE抑制剂变力剂(如4-6和7)所共有的。参照图8-10,模拟了cA