Synthesis, Binding Affinity at Glutamic Acid Receptors, Neuroprotective Effects, and Molecular Modeling Investigation of Novel Dihydroisoxazole Amino Acids
作者:Paola Conti、Marco De Amici、Giovanni Grazioso、Gabriella Roda、Andrea Pinto、Kasper Bø Hansen、Birgitte Nielsen、Ulf Madsen、Hans Bräuner-Osborne、Jan Egebjerg、Valentina Vestri、Domenico E. Pellegrini-Giampietro、Pauline Sibille、Francine C. Acher、Carlo De Micheli
DOI:10.1021/jm0504499
日期:2005.10.1
lic acid(+)-4, (-)-4, (+)-5, and (-)-5 were prepared by stereoselective synthesis of two pairs of enantiomers, which were subsequently resolved by enzymatic procedures. These four stereoisomers and the four stereoisomers of the bicyclic analogue 5-amino-4,5,6,6a-tetrahydro-3aH-cyclopenta[d]isoxazole-3,5-dicarboxylic acid (+)-2, (-)-2, (+)-3, and (-)-3 were tested at ionotropic and metabotropic glutamate
5-(2-氨基-2-羧乙基)-4,5-二氢异恶唑-3-羧酸(+)-4,(-)-4,(+)-5和(-)-5的四种立体异构体通过两对对映异构体的立体选择性合成制备了二甲基对苯二酚,随后通过酶促方法将其拆分。双环类似物5-氨基-4,5,6,6a-四氢-3aH-环戊[d]异恶唑-3,5-二羧酸(+)-2,(-)-2的这四个立体异构体和四个立体异构体,(+)-3和(-)-3在离子型和代谢型谷氨酸受体亚型中进行了测试。当在氧葡萄糖剥夺(OGD)细胞培养测试中进行测试时,最有效的NMDA受体拮抗剂[(+)-2,(-)-4和(+)-5]显示出显着的神经保护作用。使用表达含有NR1亚基和NR2A的克隆的大鼠NMDA受体的非洲爪蟾卵母细胞初步测定了相同的化合物,NR2B,NR2C或NR2D亚基。在该测定中,所有三种衍生物均表现出较高的拮抗剂效价,优先考虑NR2A和NR2B亚型,而衍生物(-)-4表现为最有效的