A highly enantioselective synthesis of (−)- and (+)-juglomycin A through Dötz annulation and asymmetric dihydroxylation
作者:Rodney A. Fernandes、Vijay P. Chavan
DOI:10.1016/j.tetlet.2008.04.059
日期:2008.6
A highly enantioselective synthesis of (−)- and (+)-juglomycin A, a quinone antibiotic is described. The synthesis is completed in eight steps, and 19% overall yield and in a high enantioselectivity of 99.5% [for (−)-juglomycin A] and 98.5% [for (+)-juglomycin A]. The synthetic strategy features an efficient combination of the Dötz annulation reaction and asymmetric dihydroxylation as the keys steps
描述了对-抗生素-(-)-和(+)-珠霉素A的高度对映选择性合成。合成完成了八个步骤,总产率为19%,对映体选择性高(对(-)-珠红霉素A为99.5%[对(+)-珠红霉素A]为98.5%)。合成策略的关键步骤是有效结合Dötz环化反应和不对称二羟基化反应。