New Synthesis of (±)-5-hydroxymarmesin, biogenetic precursor of the skin photosensitizing agent bergapten (5-MOP)
作者:P. Rodighiero、P. Manzini、G. Pastorini、A. Guiotto
DOI:10.1002/jhet.5570180301
日期:1981.5
A convenient synthesis is described of (±)-5-hydroxymarmesin, 4-hydroxy-2-(1-hydroxy-1-methylethyl)-2,3-dihydro-7H-furo[3,2-g][1]benzopyran-7-one, a physiological intermediate in the biogenetic pathway of 5-O-alkylfurocoumarins. The synthesis was achieved by a regiospecific 6-C isoprenylation of 5,7-diacetoxy-coumarin; the 6-C isoprenylated derivative is then submitted to an oxidative cyclization obtaining
描述了一种方便的合成方法,包括(±)-5-羟基油菜素,4-羟基-2-(1-羟基-1-甲基乙基)-2,3-二氢-7 H-呋喃[3,2- g ] [1]苯并吡喃-7-一,5-O-烷基呋喃香豆素生物发生途径中的生理中间体。通过5,7-二乙酰氧基-香豆素的区域特异性6-C异戊烯基化来完成合成。然后将6-C异戊二烯基化衍生物进行氧化环化,主要得到标题化合物及其角异构体。