Synthesis of linear coumarins via para-Claisen rearrangement of coumarate ester derivatives: total synthesis of suberosin, demethylsuberosin, and ostruthin
作者:Nicholas Cairns、Laurence M. Harwood、David P. Astles
DOI:10.1039/c39860001264
日期:——
Heating 2′-O-prenylated derivatives of 4′-O-benzyl methyl coumarates (3) furnishes the corresponding linear prenylated umbelliferones (1) directly via sequential para-Claisen rearrangement and relactonisation.
加热4'- O-苄基香豆酸酯(3)的2'- O-烯丙基化衍生物(3),直接通过连续的对-克莱森重排和再内酯化作用提供相应的线性烯丙基化伞形酮(1)。