Synthesis and muscarinic activity of quinuclidinyl- and (1-azanorbornyl)pyrazine derivatives
作者:Leslie J. Street、Raymond Baker、Tracey Book、Austin J. Reeve、John Saunders、Timothy Willson、Rosemarie S. Marwood、Shailendra Patel、Stephen B. Freedman
DOI:10.1021/jm00080a014
日期:1992.1
been explored. Optimal muscarinic agonist activity was observed for unsubstituted pyrazines in the azanorbornane series. The exo-1-azanorbornane 18a is one of the most efficacious and potent centrally active muscarinic agonists known. Studies on the 3-substituted derivatives have provided evidence of the preferred conformation of these ligands for optimal muscarinic activity. Substitution at C6 gave
描述了基于吡嗪的新型激动剂的合成和皮质毒蕈碱活性。通过锂化吡嗪与氮杂双环酮的反应,然后氯化和还原,或通过氮杂双环酯的烯醇锂与2-氯吡嗪的反应,然后酯水解和脱羧,来制备喹喔啶和金刚烷硼烷衍生物。已经研究了杂芳环的所有三个位置上的取代。对于金刚烷烷系列中未取代的吡嗪,观察到最佳的毒蕈碱激动剂活性。exo-1-azanorbornaneane 18a是已知的最有效和最有效的中枢活性毒蕈碱激动剂之一。对3-取代衍生物的研究提供了这些配体对于最佳毒蕈碱活性的优选构象的证据。在C6处取代使配体具有增加的亲和力和降低的功效。移动二嗪环氮的位置以得到嘧啶和哒嗪衍生物导致毒蕈碱活性的显着损失。