for rapid assembly of a γ‐naphthopyrone monomeric precursor to the bis‐naphthoquinone natural product aurofusarin. Dimerization was achieved through PdII‐catalyzed dehydrogenative coupling. Further studies employing asymmetric nucleophilic epoxidation indicate that the atropisomers of aurofusarin and derivatives are not configurationally stable at ambient temperature.
开发了一种涉及醌中
吡喃酮加成和 Dieckmann 缩合的高效环化,用于快速组装双
萘醌
天然产物 aurofusarin 的 γ-
萘醌单体前体。二聚化是通过 PdII 催化的脱氢偶联实现的。采用不对称亲核环氧化的进一步研究表明,大熊油素及其衍
生物的异构体在环境温度下构型不稳定。