Synthesis of the C<sub>1</sub>-C<sub>21</sub>Southern Hemisphere of the Originally Proposed Structure of Spirastrellolide A
作者:Ian Paterson、Edward A. Anderson、Stephen M. Dalby
DOI:10.1055/s-2005-918449
日期:——
A stereocontrolled synthesis of the C1-C21 [6,6]-spiroacetal-containing domain of the originally assigned structure of spirastrellolide A is reported, exploiting asymmetric boron aldol methodology and an alkyne addition to a C17 aldehyde. Comparison of the 1H NMR data obtained for this synthetic fragment with that for the corresponding region of spirastrellolide suggested some stereochemical reassignment was required.
报告利用不对称硼醛方法和 C17 醛的炔加成法,立体控制合成了螺旋藻内酯 A 最初指定结构的 C1-C21 [6,6]-spiroacetal 含域。将该合成片段获得的 1H NMR 数据与螺旋藻内酯相应区域的 1H NMR 数据进行比较,发现需要进行一些立体化学重新配置。