(+)-Grandifloracin was synthesized from sodium benzoate by means of a dearomatizing dihydroxylation that proceeds with unusual regloselectivity. Iron diene complexes formed from the arene oxidation product permit the use of otherwise Inaccessible transformations. The synthetic material was shown to be antipodal to the natural product, thus determining the absolute configuration of grandifloracin for the first time.
通过采用一种具有非同寻常区域选择性的去芳香化二羟基化反应,从
苯甲酸钠出发合成了(+)-grandifloracin。由芳香化合物氧化产物形成的
铁烯烃配合物,使得一些原本无法实现的转化成为可能。合成材料被证明与
天然产物呈对映异构,从而首次确定了grandifloracin的绝对构型。