Synthesis of Key Fragments of Amphidinolide Q — A Cytotoxic 12-membered Macrolide
作者:Kohei Kawa、Akihiro Hara、Yuichi Ishikawa、Shigeru Nishiyama
DOI:10.3390/molecules16075422
日期:——
β-Hydroxy aldehyde and alkyl ketone moieties were effectively synthesized as key intermediates of amphidinolide Q, a cytotoxic macrolide from the cultured dinoflagellate Amphidinium sp.. The asymmetric center of the former derivative was produced by Sharpless asymmetric epoxidation, followed by E-selective 1,4-addition to give the sp2 methyl group. Derivatization of the L-ascorbic acid derivative by
β-羟基醛和烷基酮部分被有效合成为amphidinolide Q的关键中间体,amphidinolide Q是一种来自培养的鞭毛藻Amphidinium sp.的细胞毒性大环内酯。前一种衍生物的不对称中心是通过Sharpless不对称环氧化产生的,然后是E-selective 1, 4-加成得到sp2甲基。通过 Evans 不对称烷基化和 Peterson 烯化对 L-抗坏血酸衍生物进行衍生化提供了后一种中间体。检查了片段的偶联反应。