作者:Mario A. Tan、Patrik Peter Züger、Silvio Roggo
DOI:10.1016/j.tetlet.2018.11.055
日期:2019.1
established by spectroscopic methods, however, its absolute configuration remained undefined. This study dealt on the total synthesis of diaportheone A (1) utilizing the cyclization and in situ thermal syn-elimination of a β-ketosulfoxide. The C-1R absolute configuration of the natural product was established by X-ray crystallography of the synthetic diaportheone A (1) (>99% ee) and comparison with the
Diaportheone A(1)是一种色酮天然产物,先前已从内生真菌Diaporthe sp。中分离出来。P 133.它的结构是通过光谱学方法确定的,但是其绝对构型仍然不确定。本研究涉及上diaportheone A的总合成(1利用环化)和原位热合成的β型ketosulfoxide的β-消除。天然产物的C-1 R绝对构型是通过合成双泛酮A(1)(> 99%ee)的X射线晶体学确定的,并与旋光度进行比较。