Enantioselective Synthesis of (S)-2-Amino-3-(3-Hydroxy-5-methylisoxazol-4-yl)propanoic Acid (S)-AMPA
作者:Raffaella Amici、Paolo Pevarello、Maristella Colombo、Mario Varasi
DOI:10.1055/s-1996-4357
日期:1996.10
(S)-AMPA (11) is an isoxazole containing α-amino acid used for selectively labeling the homonymous excitatory amino acid (EAA) receptor. Until now only enzymatic methods have been devised for its preparation. An asymmetric synthesis of (S)-AMPA is reported which exploits the formation of 3-bromo-4-hydroxymethyl-5-methylisoxazole intermediate 3 in a potassium fluoride promoted 1,3-dipolar cycloaddition and the application of the bislactim ether methodology for introducing the chiral α-amino acid center.
(S)-AMPA(11)是一种含有δ-氨基酸的异噁唑,用于选择性标记同名兴奋性氨基酸(EAA)受体。迄今为止,只有酶法可以制备这种物质。本报告介绍了一种 (S)-AMPA 的不对称合成方法,该方法利用氟化钾促进的 1,3-二极环化反应中形成的 3-溴-4-羟甲基-5-甲基异噁唑中间体 3,并应用双内酯醚法引入手性 δ- 氨基酸中心。