Design and synthesis of alkyl 7,7-dihalo-3-methyl-5-(nitrophenyl)-2-azabicyclo[4.1.0]hept-3-ene-4-carboxylates with calcium channel antagonist activity
作者:Javid S. Mojarrad、Dean Vo、Carlos Velázquez、Edward E. Knaus
DOI:10.1016/j.bmc.2005.03.047
日期:2005.6
A group of alkyl 7,7-dihalo-3-methyl-5-(2- or 3-nitrophenyl)-2-azabicyclo[4.1.0]hept-3-ene-4-carboxylates were prepared by reaction of dihalocarbenes (:CX(2), X=Br, Cl) with alkyl 2-methyl-4-(2- or 3-nitrophenyl)-1,4-dihydropyridine-3-carboxylates. In vitro calcium channel antagonist activities were determined using a guinea pig ileum longitudinal smooth muscle assay. The title compounds exhibited
通过二卤卡宾的反应制备一组烷基7,7-二卤-3-甲基-5-(2-或3-硝基苯基)-2-氮杂双环[4.1.0]庚-3-烯-4-羧酸酯(: CX(2),X = Br,Cl)具有2-甲基-4-(2-或3-硝基苯基)-1,4-二氢吡啶-3-羧酸烷基酯。使用豚鼠回肠纵向平滑肌测定法测定体外钙通道拮抗剂活性。标题化合物表现出比参考药物硝苯地平(1.4 x 10(-8)M)弱的CC拮抗剂活性(10(-5)至10(-7)M范围)。构效关系表明,C-5苯环上硝基取代基的位置(邻位或间位),大小(Br和Cl的范德华半径分别为1.95和1.80A)和/或电负性( C-7双键卤素原子的Cl> Br)似乎对CC拮抗剂活性没有显着影响。相反,当具有Me或Et烷基酯基的化合物相对于参考药物硝苯地平(IC( 50)= 1.40 x 10(-8)M)。用生物等位性双峰-二卤代环丙基取代硝苯地平中存在的2-甲基-3-甲氧基羰