Synthesis and Pharmacology of <i>N</i>-Substituted Piperazine-2,3-dicarboxylic Acid Derivatives Acting as NMDA Receptor Antagonists
作者:Richard M. Morley、Heong-Wai Tse、Bihua Feng、Jacqueline C. Miller、Daniel T. Monaghan、David E. Jane
DOI:10.1021/jm0492498
日期:2005.4.1
The binding site for competitive NMDA receptor antagonists is on the NR2 subunit, of which there are four types (NR2A-D). Typical antagonists such as (R)-AP5 have a subunit selectivity of NR2A > NR2B > NR2C > NR2D. The competitive NMDA receptor antagonist (2R,3S)-(1-biphenylyl-4-carbonyl)piperazine-2,3-dicarboxylic acid (PBPD, 16b) displays an unusual selectivity with improved relative affinity for
竞争性NMDA受体拮抗剂的结合位点位于NR2亚基上,其中有四种类型(NR2A-D)。典型的拮抗剂,例如(R)-AP5,具有亚单位选择性为NR2A> NR2B> NR2C> NR2D。竞争性NMDA受体拮抗剂(2R,3S)-(1-联苯基-4-羰基)哌嗪-2,3-二羧酸(PBPD,16b)与NR2A和NR2B相比,对NR2C和NR2D的相对亲和力增强,显示出非同寻常的选择性。合成了16b的带有芳基或芳基取代基的哌啶-2,3-二羧酸的N(1)连接基团的类似物,以探讨NR2C / NR2D选择性的结构要求。菲-2-羰基类似物16e对NR2C和NR2D的亲和力高> 60倍,对NR2C / NR2D的选择性是NR2A / NR2B的3-5倍。菲-3-羰基类似物(16f)的效力较低,但选择性更高,分别对NR2D的选择性是NR2A和NR2B的5倍和7倍。因此,带有大量疏水残基的拮抗剂具有与典型拮抗剂不同的NR2亚基选择性。