Asymmetric synthesis and structure-activity studies of the fungal metabolites colletorin A, colletochlorin A and their halogenates analogues
作者:Giulia Marsico、Barbara A. Pignataro、Marco Masi、Antonio Evidente、Francesca Casella、Maria Chiara Zonno、Jun-Hyung Tak、Jeffrey R. Bloomquist、Stefano Superchi、Patrizia Scafato
DOI:10.1016/j.tet.2018.05.077
日期:2018.7
The first asymmetric total synthesis of both enantiomers of the natural products colletorin A and colletochlorin A is presented. The proposed methodology is based on the coupling reaction between highly substituted aromatic Gilman cuprates and optically active allyl bromides, in turn obtained by Sharpless asymmetric dihydroxylation. The latter ensured a high degree of regio- and stereocontrol in the
介绍了天然产物colletorin A和colletochlorin A的两种对映异构体的首次不对称全合成。所提出的方法是基于高度取代的芳族吉尔曼铜酸盐和旋光的烯丙基溴之间的偶联反应,而后者又通过Sharpless不对称二羟基化反应获得。后者在合成的对映选择性步骤中确保了高度的区域和立体控制。相同的合成策略也已用于制备高对映体纯度的不同氯代氯霉素A的卤代合成类似物。colletorin A和colletochlorin A的对映选择性合成可以可靠地分配其绝对构型。