Total syntheses of the angucyclinone antibiotics (+)-emycin A and (+)-ochromycinone
作者:David S. Larsen、Michael D. O'Shea、Sally Brooker
DOI:10.1039/cc9960000203
日期:——
The first asymmetric synthesis of the angucyclinone antibiotics, emycin A and ochromycinone, is achieved via a short, efficient sequence from 5-hydroxy-1,4-naphthoquinone with the key step being an effective kinetic resolution of a racemic diene in a Diels–Alder reaction promoted by a chiral Lewis acid derived from (S)-3,3′-diphenyl-1,1′-biaphthalene-2,2′-diol.
安古环酮类抗生素、艾米霉素 A 和奥铬霉素的首次不对称合成是通过 5-羟基-1,4-萘醌的短而高效的序列实现的,关键步骤是在 Diels-Alder 反应器中有效动力学拆分外消旋二烯由(S)-3,3'-二苯基-1,1'-联苯-2,2'-二醇衍生的手性路易斯酸促进反应。