Successive Michael Reaction-Sigmatropic Rearrangement of Naphthodiquinone with O-Silylated Ketene Acetals Leading to Synthesis of Cycloshikonin and Structure-Reactivity Relationship for Side Chain of Naphthazarins.
作者:Mariko ASO、Ken KANEMATSU
DOI:10.1248/cpb.41.1549
日期:——
Synthesis of cycloshikonin via successive Michael reaction-sigmatropic rearrangement of naphthodiquinone with O-silylated ketene acetals is described. The structure dependence of the reactivity of the side chain of intermediary naphthazarin derivatives has also been investigated.
该研究描述了通过萘醌与 O-硅烷化酮乙缩醛的连续迈克尔反应-对位重排合成环紫草素的过程。此外,还研究了中间萘甲萘醌衍生物侧链反应活性的结构依赖性。