Synthetic studies of yessotoxin, a polycyclic ether implicated in diarrhetic shellfish poisoning: convergent synthesis of the BCDE ring system via an alkyne intermediate
作者:Yuji Mori、Hisafumi Hayashi
DOI:10.1016/s0040-4020(02)00038-8
日期:2002.3
A convergent synthetic route to the BCDE ring system of yessotoxin, a polycyclic ether marine toxin related to diarrhetic shellfish poisoning, has been developed. The key feature of the present synthesis is the alkylation of acetylene with the B and E ring units, which were prepared from a common intermediate. The alkyne functionality was directly converted to a 1,2-diketone by ruthenium oxidation
已经开发了一条聚合的合成路线,即BCSE环的耶索毒素(一种与腹泻性贝类中毒有关的多环醚海洋毒素)。本合成的关键特征是乙炔与B和E环单元的烷基化,这是由一种常见的中间体制备的。炔烃官能度通过钌氧化直接转化为1,2-二酮。二酮的酸处理导致形成四环二半缩酮结构。二半缩酮的羟基的O-甲基化和还原醚化完成了耶司毒素的BCDE环系统的合成。