Synthesis and Pharmacology of Benzoxazines as Highly Selective Antagonists at M<sub>4</sub> Muscarinic Receptors
作者:Thomas M. Böhme、Corinne E. Augelli-Szafran、Hussein Hallak、Thomas Pugsley、Kevin Serpa、Roy D. Schwarz
DOI:10.1021/jm011116o
日期:2002.7.1
102807 (41) as being the most selective synthetic M(4) muscarinic antagonist identified to date. Synthesized analogues of 41 showed no improvement in affinity and selectivity at that time. However, several newly synthesized compounds exhibit a 7-fold higher affinity at M(4) receptors and demonstrate a selectivity of at least 100-fold over all other muscarinic receptor subtypes. For example, compound
以前,我们在PD 102807(41)上报道其为迄今为止鉴定出的最具选择性的合成M(4)毒蕈碱拮抗剂。当时合成的41类似物没有显示亲和力和选择性的改善。但是,几种新合成的化合物在M(4)受体上显示出7倍更高的亲和力,并且比所有其他毒蕈碱受体亚型表现出至少100倍的选择性。例如,化合物28对M(4)受体显示pK(i)= 9.00的亲和力,对M(1)/ M(4)= 13183-fold,M(2)/ M(4)= 339倍,M(3)/ M(4)= 151倍和M(5)/ M(4)= 11220倍。尚未针对任何合成毒蕈碱拮抗剂或天然M(4)拮抗剂如M(4)选择性东部绿曼巴蛇毒MT3(M(4)pK(b)= 8.7)报道过这种高选择性和高亲和力。 ,M(1)/ M(4)= 40倍,M(2)/ M(4)>或= 500倍,M(3)/ M(4)>或= 500倍,以及M(5)/ M(4)>或= 500倍)。衍生物