Acta Chim. Sinica ›› 2015, Vol. 73 ›› Issue (7): 699-704.DOI: 10.6023/A15030205 Previous Articles     Next Articles



汪学彬a, 王晓丽a, 胡静b, 王兆亚a, Pimpalpalle Tukaram Mc, Linker Torstenc, 尹健a   

  1. a 江南大学生物工程学院糖化学与生物技术教育部重点实验室 无锡 214122;
    b 江南大学无锡医学院 无锡 214122;
    c Department of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
  • 投稿日期:2015-03-25 发布日期:2015-05-25
  • 通讯作者: 尹健
  • 基金资助:

    项目受国家自然科学基金(No. 21302068)、江苏省自然科学基金(No. BK20130127)、高等学校博士学科点专项科研基金(No. 20120093120002)和中央高校基本科研业务费专项资金资助(No. JUSRP51319B, JUSRP51411B).

Study on the Synthesis of Novel Sugar Amino Acids

Wang Xuebina, Wang Xiaolia, Hu Jingb, Wang Zhaoyaa, Pimpalpalle Tukaram Mc, Linker Torstenc, Yin Jiana   

  1. a Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, 214122;
    b Wuxi Medical School, Jiangnan University, Lihu Avenue1800, 214122;
    c Department of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
  • Received:2015-03-25 Published:2015-05-25
  • Supported by:

    Supporting information for this article is available free of charge via the Internet at supported by the National Science Foundation for Young Scientists of China (No. 21302068), the Natural Science Foundation of Jiangsu Province, China (No. BK20130127), the specialized Research Fund for the Doctoral Program of Higher Education (No. 20120093120002) and the Fundamental Research Funds for the Central Universities (No. JUSRP51319B, JUSRP51411B).

Sugar amino acids (SAAs) are carbohydrate derivatives bearing both amino and carboxylic acid functional groups. SAAs represent an important class of multifunctional building blocks, which are amenable to serve as glycomimetics or peptidomimetics with well-defined structures and useful properties. Because SAAs exist in nature in many forms with various biological activities, recently, many unnatural SAAs, as the demand for finding new molecules to discover new drugs and new materials, have been designed and synthesized by a number of research groups. In this paper, we have developed a convenient method for the synthesis of novel SAAs gluco-7 and galacto-7 for the first time. The structure of gluco-7 was similar to the natural SAA glucosaminuronic acid that was a component of many typical bacterial cell walls and could be used for the preparation of type D flu vaccine; while galacto-7 was similar to the natural SAA galactosaminuronic acid that was one of bacterial Vi-antigen components of Escherichia coli. Starting from unexpensive and commercially available 3,4,6-tri-O-acetyl-D-glucal and 3,4,6-tri-O-acetyl-D-galactal, two novel SAAs gluco-7 and galacto-7 were achieved in the linear 6 steps with 34% overall yield and 19% overall yield, respectively. The key reactions included radical addition, decarboxylation, iodine generation reaction, azide reaction and reductive amination reaction. The crucial step was the synthesis of the target compound gluco-7 from gluco-6. By using method A, the target compound gluco-7 was obtained in 4 steps with 63% overall yield. To optimize the transformation from gluco-6 to gluco-7, method B was developed to generate gluco-7 by using one-pot reaction successfully with 76% yield only in one step. It proved that method B was superior to method A with shorter steps and higher yields. All the new compounds were characterized by IR, 1H NMR, 13C NMR and HRMS data. Study on the synthesis and biological evaluation of linear and cyclic oligomers derived from gluco-7 and galacto-7 are currently in progress.

Key words: sugar amino acids, glycal, radical addition, one-pot reaction, synthesis