Synthesis of Ring B Unsaturated Estriols. Confirming the Structure of a Diagnostic Analyte for Smith−Lemli−Opitz Syndrome
作者:Li-Wei Guo、Cedric H. L. Shackleton、William K. Wilson
DOI:10.1021/ol016224j
日期:2001.8.9
[structure: see text] Brief partial syntheses are described for ring B unsaturated estriols, which are candidate metabolites diagnostic for Smith-Lemli-Opitz syndrome prenatally. These steroids are also likely metabolites of the Premarin preparation used in estrogen replacement therapy. Equilin (8) was converted in three steps to 7-dehydroestriol, which was isomerized to 8-dehydroestriol. The simplicity
[结构:见正文]描述了B环不饱和雌激素的简要部分合成,这些B环是产前诊断Smith-Lemli-Opitz综合征的候选代谢物。这些类固醇也可能是用于雌激素替代疗法的Premarin制剂的代谢产物。分三步将Equilin(8)转化为7-脱氢雌三醇,将其异构化为8-脱氢雌三醇。转化的简单性掩盖了这些以前无法获得的代谢物及其合成前体的不稳定性。