2-Substituted (2<i>SR</i>)-2-Amino-2-((1<i>SR</i>,2<i>SR</i>)-2-carboxycycloprop-1-yl)glycines as Potent and Selective Antagonists of Group II Metabotropic Glutamate Receptors. 2. Effects of Aromatic Substitution, Pharmacological Characterization, and Bioavailability
作者:Paul L. Ornstein、Thomas J. Bleisch、M. Brian Arnold、Joseph H. Kennedy、Rebecca A. Wright、Bryan G. Johnson、Joseph P. Tizzano、David R. Helton、Mary Jeanne Kallman、Darryle D. Schoepp、Marc Hérin
DOI:10.1021/jm970498o
日期:1998.1.1
5-fold increases in affinity. Substitution with p-fluorine, as in 97 (IC50 = 0.022 +/- 0.002), was the exception. Here, a greater increase in affinity was realized than for either the ortho- or meta-substituted analogues; 97 was the most potent compound resulting from monosubstitution of the aromatic. At best, only modest increases in affinity were realized for certain compounds bearing either two chlorines
在本文中,我们描述了一系列有效的和选择性的II型代谢型谷氨酸受体(mGluR)激动剂(1S,1'S,2'S)-羧基环丙基甘氨酸(2,L-CCG 1)的一系列α-取代类似物的合成。在氨基酸碳上引入取代基将激动剂2转化为拮抗剂。所有化合物均已制备并测试为一系列四个异构体,即两个外消旋非对映异构体。基于对α-苯乙基类似物3亲和力的改善,在本文中,我们探讨了取代对芳环的影响,作为增加与这些化合物对II型mGluRs的亲和力的策略。II组mGluRs的亲和力是使用[3H]谷氨酸(Glu)在大鼠前脑膜中的结合来测量的。通过测量它们在人类mGluR2和mGluR3转染的RGT细胞中拮抗(1S,3R)-1-氨基环戊烷-1,3-二羧酸诱导的福司柯林刺激的环-AMP抑制作用的能力,证实了它们的拮抗活性。3的芳香环上的间位取代基由各种取代基提供,这些取代基分别是给电子(例如甲基,羟基,氨基,甲氧基,苯基,苯氧基