The O-propargyl derivative of a sugar aldehyde derived from d-glucose undergoes smooth intramolecular domino Knoevenagel–hetero-Diels–Alder reactions with 1,3-diketones in the presence of CuI/Et3N system in refluxing methanol to afford a novel class of carbohydrate analogues, furopyranopyrans in good yields. 1-Aryl-pyrazol-5-ones also undergo smooth coupling with O-propargyl tethered sugar aldehyde
d-葡萄糖衍生的糖醛的O-炔丙基衍生物在CuI / Et 3 N系统存在下于回流甲醇中与1,3-二酮进行平滑的分子内多米诺Knoevenagel-杂Diels - Alder反应碳水化合物类似物呋喃并吡喃类化合物的收成良好。在类似条件下,1-芳基吡唑-5-酮还可以与O-炔丙基束缚的糖醛进行平滑偶联,以提供吡唑环化的呋喃并吡喃。通过各种NMR实验确定产物的立体化学。