A Novel Approach to the Synthesis of Amino-Sugars. Routes To Selectively Protected 3-Amino-3-deoxy-aldopentoses Based on Pyridinium Salt Photochemistry
作者:Haiyan Lu、Zhuoyi Su、Ling Song、Patrick S. Mariano
DOI:10.1021/jo020038p
日期:2002.5.1
A new approach for the synthesis of selectively blocked 3-amino-3-deoxyaldopentoses is presented. The strategy is based on employment of a pyridinium salt photocyclization-aziridine ring-opening sequence to prepare stereochemically defined, enantiomerically enriched aminocyclopentendiol derivatives. Ring-opening reactions transform these substances into terminally differentiated aminopolyols, which
提出了一种合成新的选择性封闭的3-氨基-3-脱氧醛糖酶的方法。该策略基于使用吡啶鎓盐光环化-氮丙啶开环序列来制备立体化学定义的,对映异构体富集的氨基环戊二醇衍生物。开环反应将这些物质转化为最终分化的氨基多元醇,这些氨基多元醇用作目标氨基醛糖酶的前体。通过将该方法应用于潜在途径中的D-和L-3-氨基-3-脱氧木糖,L-3-氨基-3-脱氧阿拉伯糖和后期中间体的受保护衍生物的合成,证明了该策略的实用性。为N-乙酰神经氨酸。