作者:Douglass F. Taber、Peiming Gu、Rui Li
DOI:10.1021/jo900767x
日期:2009.8.7
stereodivergent total synthesis of the Δ13-9-isofurans has been developed. The four core substituted tetrahydrofurans were prepared by the Sharpless asymmetric epoxidation and Sharpless asymmetric dihydroxylation followed by cascade cyclization. The relative configuration at C-8 was inverted by oxidation followed by immediate L-Selectride reduction. The relative configuration of the C-15 diastereomers was
已经开发了 Δ 13 -9-异呋喃的立体发散全合成。四个核心取代的四氢呋喃是通过 Sharpless 不对称环氧化和 Sharpless 不对称二羟基化随后级联环化制备的。C-8 处的相对构型通过氧化被反转,然后立即 L-Selectride 还原。C-15 非对映体的相对构型由相应烯酮的 ( S )-Binol/LAH/EtOH 还原指定。Δ 13 -9-异呋喃的这种合成将为进一步研究它们的生物活性提供足够的材料。