M1 agonists. Only the propargyl derivative (4d) retained substantial agonist activity (120 +/- 14% at 100 microM) in this series. On the basis of the activity of the 5-(alkoxycarbonyl)-1,4,5,6- tetrahydropyrimidines (1a and 1d) and the 2-amino-5-(alkoxycarbonyl)-3,4,5,6-tetrahydropyridines, the corresponding cyclic guanidine derivatives were synthesized and tested. 2-Amino-5-(methoxycarbonyl)-1,4,5,
合成了2-
氨基-(甲氧基羰基)-3,4,5,6-四氢
吡啶(2a-5a)的四种区域异构体,作为外消旋体,以评估环外am在开发新型M1毒蕈碱受体激动剂中的效用。在这四种区域异构体中,只有外消旋的2-
氨基-5-(甲氧羰基)-3,4,5,6-四氢
吡啶(4a;
CDD-0075-A)显示出高亲和力(IC50 = 10 +/- 3.0 microM)和活性毒蕈碱受体与大鼠皮层中的
PI代谢耦合(在100 microM的基础
水平上刺激260 +/- 4.5%)。然后合成一系列2-
氨基-5-(烷氧基羰基)-3,4,5,6-四氢
吡啶作为M1激动剂用于进一步评估。在该系列中,仅炔丙基衍
生物(4d)保留了显着的激动剂活性(在100 microM时为120 +/- 14%)。根据5-(烷氧羰基)-1,4,5的活性,合成并测试了6-四氢
嘧啶(1a和1d)和2-
氨基-5-(烷氧羰基)-3,4,5,6-四氢
吡啶,相应的环