Using Molecular Iodine in Direct Oxidative Condensation of Aldoses with Diamines: An Improved Synthesis of Aldo-benzimidazoles and Aldo-naphthimidazoles for Carbohydrate Analysis
作者:Chunchi Lin、Po-Ting Lai、Sylvain Kuo-Shiang Liao、Wei-Ting Hung、Wen-Bin Yang、Jim-Min Fang
DOI:10.1021/jo800234x
日期:2008.5.1
practical method has been developed for conversion of unprotected and unmodified aldoses to aldo-benzimidazoles and aldo-naphthimidazoles. Using iodine as an oxidant or promoter in acetic acid solution, a series of mono-, di-, and trialdoses, including those containing carboxyl and acetamido groups, undergo an oxidative condensation reaction with o-phenylenediamine or 2,3-naphthalenediamine at room
已经开发了一种实用的方法,用于将未保护的和未修饰的醛糖转化为醛基-苯并咪唑和醛基-萘并咪唑。使用碘作为乙酸溶液中的氧化剂或助催化剂,在室温下,一系列单,双和三官能团(包括含有羧基和乙酰胺基的那些)与邻苯二胺或2,3-萘二胺发生氧化缩合反应以高收率得到醛-苯并咪唑和醛-萘并咪唑产物。在这种温和的反应条件下,没有发生糖苷键的切割。糖的组成分析通过荧光萘并咪唑衍生物的HPLC分析来实现。