Synthesis and structure-activity relationships of dynorphin A-(1-8) amide analogs
作者:Hiroshi Yoshino、Takahiro Nakazawa、Yoshihiro Arakawa、Takeru Kaneko、Yutaka Tsuchiya、Manabu Matsunaga、Shin Araki、Masuhiro Ikeda、Kiyomi Yamatsu、Shinro Tachibana
DOI:10.1021/jm00163a034
日期:1990.1
In order to study the structure-activity relationships of dynorphin A-(1-8) amide [Dyn(1-8)-NH2], 20 analogues were synthesized by the solution method. Their biological activities were determined in the three bioassays [guinea pig ileum (GPI), mouse vas deferens (MVD), and rabbit vas deferens (RVD)] and in the mouse tail-pinch test after intravenous administration. Some analogues that showed interesting
为了研究强啡肽A-(1-8)酰胺[Dyn(1-8)-NH2]的构效关系,采用溶液法合成了20种类似物。在三种生物测定法[豚鼠回肠(GPI),小鼠输精管(MVD)和兔输精管(RVD)]中以及静脉内给药后的小鼠尾巴捏夹试验中确定了它们的生物学活性。在生物测定和/或镇痛试验中显示出有趣活性的一些类似物在mu-,delta和kappa代表性结合试验中得到了进一步表征。获得的数据表明,严格限制脑啡肽片段的修饰以提供对kappa受体具有高亲和力和选择性的代谢稳定的类似物,并且在7位引入MeArg可保护Arg6-Arg-7键免于酶降解,而不会降低药效和阿片受体选择性的变化。[MeTyr1,MeArg7,D-Leu8] Dyn(1-8)-NHEt(18)[IC50(nM)= 0.3(GPI),7.4(MVD)和2.6(RVD);尾巴ED50(mg / kg)= 0.75]在三种生物测定中显示出与强啡肽A相