Synthesis and Biological Evaluation of 1,2,3,4-Tetrahydroisoquinoline Derivatives as Potent and Selective M2 Muscarinic Receptor Antagonists.
作者:Toshihiro WATANABE、Isao KINOYAMA、Kenji TAKIZAWA、Seiko HIRANO、Tadao SHIBANUMA
DOI:10.1248/cpb.47.672
日期:——
11-dihydro-6H-pyrido[2,3-b][1,4]benzodiazepin-6-one skeleton were prepared and evaluated for their in vitro binding affinities to muscarinic receptors and for antagonism of bradycardia in vivo. Among them, compound 3f had the highest affinity for M2 muscarinic receptors in the heart (pKi = 9.1) with low affinity for M3 muscarinic receptors in the submandibular gland. A structure-activity relationship (SAR) study
制备了一系列1,2,3,4-四氢异喹啉衍生物,它们含有5,11-二氢-6H-吡啶并[2,3-b] [1,4]苯并二氮杂-6-骨架,并在体外进行了评估与毒蕈碱受体的结合亲和力和体内心动过缓的拮抗作用。其中,化合物3f对心脏中M2毒蕈碱受体的亲和力最高(pKi = 9.1),对下颌下腺M3毒蕈碱受体的亲和力低。结构-活性关系(SAR)研究表明,苯环稠合的哌啶和烷基接头链长对于提高M2亲和力至关重要。