A novel urea-linked glucosamine dimer was obtained through a modification of the standard oxazolidinone closure reaction on a 2,3-amino alcohol monomer and fully characterized by NMR spectroscopy and by molecular mechanics and dynamics techniques. A mechanism was proposed for the dimerization reaction that was based on the formation of a 2,3-bis[(p-nitrophenoxy)carbonyl] intermediate. Chemoselective
通过对 2,3-氨基醇单体的标准恶唑烷酮闭合反应的修改,获得了一种新型的脲连接葡糖胺二聚体,并通过 NMR 光谱和分子力学和动力学技术进行了充分表征。提出了一种基于形成 2,3-双[(对硝基苯氧基)羰基] 中间体的二聚反应机制。对二聚体正交保护基团模式的化学选择性操作——尤其是在其前所未有的恶唑烷酮-脲-恶唑烷酮系统上——提供了一种醇结构单元,可用于获得更高的线性和环状新糖。新型氨基甲酸酯连接的新二糖大环的构象特征和 3D 表征是通过分子力学和动力学计算完成的。