Novel functional M1 selective muscarinic agonists. Synthesis and structure-activity relationships of 3-(1,2,5-thiadiazolyl)-1,2,5,6-tetrahydro-1-methylpyridines
作者:Per Sauerberg、Preben H. Olesen、Susanne Nielsen、Svend Treppendahl、Malcolm J. Sheardown、Tage Honore、Charles H. Mitch、John S. Ward、Andrew J. Pike
DOI:10.1021/jm00090a019
日期:1992.6
novel 3-(3-substituted-1,2,5-thiadiazol-4-yl)-1,2,5,6-tetrahydro- 1-methylpyridines (substituted-TZTP; 5a-l, 7a-h, 8, 9c-n, 11, 13j) were synthesized and tested for central muscarinic cholinergic receptor affinity by using [3H]-oxotremorine-M (Oxo-M) and [3H]-pirenzepine (Pz) as ligands. The potency and efficacy of the compounds for the pharmacological defined M1 and M2 muscarinic receptors were determined
一系列新颖的3-(3-取代-1,2,5-噻二唑-4-基)-1,2,5,6-四氢-1-甲基吡啶(取代的TZTP; 5a-1,7a-h,合成了8、9c-n,11、13j),并通过使用[3H]-氧代remorine-M(Oxo-M)和[3H]-哌仑西平(Pz)作为配体测试了中央毒蕈碱胆碱能受体亲和力。在分离的电刺激兔输精管和自发跳动的豚鼠心房上分别测定化合物对药理定义的M1和M2毒蕈碱受体的效力和功效。还测试了所选化合物在分离的豚鼠回肠中的M3活性。C1-8烷氧基-TZTP 5a-1类似物均以低纳摩尔亲和力取代了[3H] -Oxo-M和[3H] -Pz。描述针对Oxo-M结合和针对Pz结合的链长,直链C1-8烷氧基-TZTP(5a-h)衍生物产生U形曲线,其中丁氧基(5d)和(戊氧基)-TZTP(5e)为最佳链长度。在化合物5a-h抑制输精管制剂中的抽搐高度的能力中也看到了该U形曲线。(戊氧基)