Analogues of Carbacholine: Synthesis and Relationship between Structure and Affinity for Muscarinic and Nicotinic Acetylcholine Receptors
作者:Birgitte Søkilde、Ivan Mikkelsen、Tine B. Stensbøl、Birgit Andersen、Søren Ebdrup、Povl Krogsgaard-Larsen、Erik Falch
DOI:10.1002/ardp.19963290207
日期:——
highest nicotinic receptor affinity. The tertiary amine, 17k showed much higher nicotinic receptor affinity than the acyclic analogue, 4 (IC50 = 5.7 μM), and the N/M selectivity factor determined for 17k (150) is an order of magnitude lower than that of nicotine (1400). The N/M selectivity factors for MCC (2) and DMCC (3), previously reported to be highly selective nicotinic receptor ligands, were shown
以 N-甲基胆碱 (MCC, 2)、N, N-二甲基胆碱 (DMCC, 3) 和相应的叔胺 (4) 为先导合成了一系列胆碱 (1) 的无环和杂环类似物。而烟碱乙酰胆碱受体亲和力是使用 [3H] 尼古丁作为放射性配体来确定的,[3H] oxotremorine-M ([3H] Oxo-M) 和 [3H] 奎宁环苯甲酸 ([3H] QNB),在某些情况下补充 [3H] QNB 3H] 哌仑西平 ([3H] PZ) 被用作大鼠脑膜上毒蕈碱乙酰胆碱受体的放射性配体。根据受体结合数据,确定烟碱/毒蕈碱(N/M)选择性因子,并估计毒蕈碱受体功效(M激动剂指数)和M1选择性(M2/M1指数)。在大多数情况下,季铵化类似物比相应的叔胺对毒蕈碱和,特别是烟碱受体位点。在新化合物中,N,N-二乙基氨基甲胆碱(9e)(IC50=0.046 μM),(S)-1-甲基-2-(N,N-二乙基-氨基羰基氧甲基)吡咯烷(17k)(IC50=0