poisoning in the Caribbean Sea and the Northeast Atlantic areas, is described in detail. Key to the synthesis are a [2,3]-sigmatropic rearrangement to construct a seven-membered α-hydroxy exo-enol ether, stereoselective construction of an angular tetrasubstituted stereogenic center on the seven-membered M-ring by a hydrogen atom transfer-based reductive olefin coupling, Suzuki–Miyaura coupling of the KLMN-ring
详细描述了加勒比雪茄毒素C-CTX-1的JKLMN环片段的合成,C-CTX-1是加勒比海和东北大西洋地区雪茄鱼中毒的致病毒素。合成的关键是[2,3]σ重排以构建七元α-羟基exo-烯醇醚,通过氢原子转移基还原性烯烃偶联,KLMN-环
磷酸烯醇酯与高度拥挤的M环的Suzuki-Miyaura偶联,在七元M环上立体选择性地在七元M环上形成有角四取代的立体中心。和
硅胶介导的环氧开环形成J环。将合成片段与
天然产物的核磁共振光谱数据进行比较,为先前指定的C-CTX-1右端N环结构提供了支持。