Divergent Synthesis of Bioactive Resorcinols Isolated from the Fruiting Bodies of <i>Hericium erinaceum</i>: Total Syntheses of Hericenones A, B, and I, Hericenols B–D, and Erinacerins A and B
作者:Shoji Kobayashi、Hidetsugu Tamanoi、Yuichi Hasegawa、Yusuke Segawa、Araki Masuyama
DOI:10.1021/jo500795z
日期:2014.6.6
series of natural products by divergent functional group manipulations. The crucial C5′-oxygen functionality was installed at the initial stage by alkylation by an α-cyano ethoxyethyl ether. From a common synthetic intermediate, eight total syntheses including hericenones A, B, and I, hericenols B–D, and erinacerins A and B were achieved (hericenol B and erinacerin B were synthesized as racemates). The structure
的5'-和全合成7'-氧化从子实体中分离香叶resorcylates猴头erinaceum和的浸没培养韧物种得以实现。我们的合成方法是将适当官能化的5'-氧化香叶基邻苯二甲酸酯(作为普通中间体)衍生化,该中间体是通过在邻苯二甲酸酯核与侧链之间进行Stille偶联而通过不同的官能团操作将其衍生为一系列天然产物的。关键的C5'-氧官能度在初始阶段通过α-氰基乙氧基乙基醚的烷基化进行安装。从一个常见的合成中间体中,总共获得了8种合成,包括Hericenones A,B和I,hericenols B–D以及erinacerins A和B(hericenol B和erinacerin B被合成为外消旋体)。隔离纸中确定的hericenone B的结构被明确修饰为内酰胺部分的羰基区域异构体。