Chin. J. Org. Chem. ›› 2017, Vol. 37 ›› Issue (11): 2929-2939.DOI: 10.6023/cjoc201706036 Previous Articles     Next Articles

Articles

固氮螺菌重复三糖片段的化学合成及其对植物生长的影响

许一仁a, 张建军a, 董燕红a, 谭伟明b   

  1. a 中国农业大学理学院 北京 100193;
    b 中国农业大学农学院 北京 100193
  • 收稿日期:2017-06-27 修回日期:2017-07-28 发布日期:2017-08-16
  • 通讯作者: 张建军, 谭伟明 E-mail:zhangjianjun@cau.edu.cn;tanwm@cau.edu.cn
  • 基金资助:

    国家科技支撑计划(No.2015BAK45B01)及国家自然科学基金(No.21172257)资助项目.

Synthesis of the Trisaccharide Repeating Unit from Azospirillum brasilense Type Strain Sp7 and Its Effect on Plant Growth

Xu Yirena, Zhang Jianjuna, Dong Yanhonga, Tan Weimingb   

  1. a School of Science, China Agricultural University, Beijing 100193;
    b College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193
  • Received:2017-06-27 Revised:2017-07-28 Published:2017-08-16
  • Contact: 10.6023/cjoc201706036 E-mail:zhangjianjun@cau.edu.cn;tanwm@cau.edu.cn
  • Supported by:

    Project supported by the National Science and Technology Pillar Program of China (No. 2015BAK45B01) and the National Natural Science Foundation of China (No. 21172257).

A natural trisaccharide α-D-rhamnopyanosyl-(1→3)-α-L-fucopyranosyl-(1→4)-β-D-xylopyranoside was synthesized from xylose glycoside donor, fucose glycoside donor and rhamnopyanosyl glycoside donor using α-D-xylopyranoside, β-L-fucopyranoside and α-D-rhamnopyranoside as the raw material respectively. This trisaccharide is a repeating-structure of the cell wall of the Azospirillum brasilense type strain Sp7. In the critical glycosylation reaction between rhamnopyanosyl glycoside donor and disaccharide receptor, full protected trisaccharide was regioselectivity builded. Streamlined the synthesis steps and the total yield of trisaccharide is 10% base on β-L-fucopyranoside. This route is suitable for mass preparation of target products. Preliminary determination of plant growth regulating activity of germination bed in sand culture showed that at 100 mg/L concen-tration, the trisaccharide raised the rate of emergence, the plant height and the leaf area by 11.0%, 13.1% and 87.8%, respectively. It was preliminarily concluded that this trisaccharide had certain plant growth regulating activity.

Key words: α-D-rhamnopyranoside, β-L-fucopyranoside, β-D-xylopyranoside, regioselective glycosylation reaction, Azospi-rillum brasilense