作者:Raymond C. F. Jones、Claire E. Dawson、Mary J. O'Mahony
DOI:10.1055/s-1999-3091
日期:——
The 1,3-dipolar cycloaddition of α-aminonitrile oxides, formed from α-amino-acids, to enamines of β-ketoesters affords 3-(1-aminoalkyl)isoxazole-4-carboxylic esters that are converted via pyrrolo[3,4-c]isoxazol-4-ones into 5-substituted 3-acetyltetramic acids.
α-氨基腈氧化物与β-酮酯的寡肽烯烃发生1,3-偶极环加成反应,生成3-(1-氨基烷基)异噁唑-4-羧酸酯,随后通过吡咯并[3,4-c]异噁唑-4-酮转化为5-取代的3-乙酰基四氨酸。