Adenosine A1 antagonists. 3. Structure-activity relationships on amelioration against scopolamine- or N6-[(R)-phenylisopropyl]adenosine-induced cognitive disturbance
作者:Fumio Suzuki、Junichi Shimada、Shizuo Shiozaki、Shunji Ichikawa、Akio Ishii、Joji Nakamura、Hiromi Nonaka、Hiroyuki Kobayashi、Eiichi Fuse
DOI:10.1021/jm00069a009
日期:1993.8
The effects of a variety of adenosine A1 and A2 antagonists on N6-((R)-phenylisopropyl)adenosine (R-PIA)- and scopolamine-induced amnesias were investigated in rodents in order to clarify the role of adenosine receptors in learning and memory. Some of the selective adenosine A1 antagonists exhibited antiamnesic activities at several doses where they did not induce an increase of spontaneous locomotion
在啮齿动物中研究了各种腺苷A1和A2拮抗剂对N6-((R)-苯基异丙基)腺苷(R-PIA)-和东pol碱诱导的健忘症的作用,以阐明腺苷受体在学习和记忆中的作用。一些选择性腺苷A1拮抗剂在几种剂量下均表现出抗记忆删除功能,在这些剂量下它们不会诱导自发运动的增加。这些结果表明,在学习和记忆中,A1受体的阻断比A2受体的阻断更为重要。在两个健忘症模型中对腺苷A1拮抗剂的构效关系的详细研究表明,存在三种类型的腺苷A1拮抗剂:(A)化合物3-5(8-取代的1,3-二丙基黄嘌呤)改善了两个模型中缩短的潜伏期。(B)化合物7-11(8-取代的1,3-二烷基黄嘌呤)和19-21(咪唑并[2,1-i]嘌呤-5(4H)-一衍生物)改善了(R)-PIA引起的健忘症模型中潜伏期的缩短,但在东pol碱引起的健忘症中却没有改善。模型。(C)在东-16碱模型中化合物14-16改善了缩短的潜伏期,但在(R)-PIA模型中