Highly Regioselective Oxirane Ring-Opening of a Versatile Epoxypyrrolidine Precursor of New Imino-Sugar-Based Sphingolipid Mimics
作者:Arnaud Rives、Yves Génisson、Vanessa Faugeroux、Chantal Zedde、Christine Lepetit、Remi Chauvin、Nathalie Saffon、Nathalie Andrieu-Abadie、Sandra Colié、Thierry Levade、Michel Baltas
DOI:10.1002/ejoc.200900100
日期:2009.5
An in-depth study of the oxirane ring-opening reaction of a pivotal epoxypyrrolidine is reported. The introduction of various carbon- and heteroatom-centered nucleophiles at C4 has been achieved with high regiocontrol. The structures of the major products were assigned on the basis on an X-ray crystallographic study of six examples. A mechanistic study carried out at the B3LYP/6-31G** level of theory
报道了对关键环氧吡咯烷的环氧乙烷开环反应的深入研究。在 C4 处引入了各种以碳和杂原子为中心的亲核试剂,已经实现了高区域控制。主要产品的结构是根据六个实例的 X 射线晶体学研究确定的。在 B3LYP/6-31G** 理论水平上进行的机械研究表明,乙烯基取代基的空间控制是区域选择性的原因。最后,该方法用于设计和制备基于亚氨基糖的鞘脂模拟物。描述了一种高度细胞毒性的 C-辛基吡咯烷。该化合物被证明会干扰小鼠黑色素瘤细胞中鞘脂的代谢,尤其是抑制葡萄糖神经酰胺的产生。(© Wiley-VCH Verlag GmbH & Co. KGaA,