A novel strategy for site-specific fluorescent labeling on naringenin (1) was established by a new direct Mannich reaction in combination with a Huisgen [3+2]-cycloaddition reaction. High regioselectivity was observed for direct Mannich reactions on naringenin and several other flavonones using a variety of amines and aldehydes.
建立了一种针对奈林素(1)的特定位置荧光标记的新策略,该策略结合了新的直接曼尼希反应和霍伊斯根 [3+2] 加成反应。通过多种胺和醛,对奈林素及其他几种
黄酮类化合物的直接曼尼希反应观察到了很高的区域选择性。