The carboalkoxyallylsilane terminator for biomimetic polyene cyclizations. A route to 21-hydroxyprogesterone types
作者:William S. Johnson、Clive Newton、Stephen D. Lindell
DOI:10.1016/s0040-4039(00)85389-7
日期:——
Polyene 3 containing a carboalkoxyallylsilane terminator was cyclized to give pro-steroid 6 in 68–75% yield. Unequivocal proof for the structure of 6 was obtained by conversion to the racemic form of the natural cortical hormone 17-desoxycorticosterone (15).
含有碳烷氧基烯丙基硅烷终止剂的多烯3被环化,以68-75%的产率得到类固醇6。通过转化为天然皮质激素17-脱氧皮质酮(15)的外消旋形式,获得了6结构的明确证据。