A New and Practical Procedure for the Preparation of the Glucohexatose Phytoalexin Elicitor  

作　　者：王海荣 李兆陇 宁君 孔繁祚 

机构地区：[1]Department of Chemistry,Tsinghua University, Beijing 100084,China [2]Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences,Beijing 100085, China

出　　处：《Chinese Journal of Chemistry》2003年第7期944-949,共6页中国化学（英文版）

基　　金：Project supported by the Beijing Natural Science Foundation(No.6021004)and the Ministry of Science and Technology(No.2001AA246014).

摘　　要：The phytoalexin elicitor β-(1→3)-branched β-(1→6)-linked glucohexatose has been regie- and stereospeciflcally synthesized by coupling of the 3, 6-branched gluco-trisaccharide Schmidt reagent 10 with a mixture of multiol 3,6-branched gluco-trisac-charides 13 which consists of free 5,6'-OH trisaccharide, free 5,2' ,6'-OH trisaccharide, free 5,3' ,6'-OH trisaccharide and so on. The compounds 10 and 13 were prepared from 1,2:5,6-di-O-isopropylidene-α-D-glucofuranose, 2, 3, 4, 6-tetra-O-ben-zoyl-α-D-glucopyranosyl trichloroacetimidate, and 2,3,4,6-te-tra-O-acetyl-α-D-glucopyranosyl trichloroacetimidate through re-gio- and stereoselective manners.The phytoalexin elicitor β-(1→3)-branched β-(1→6)-linked glucohexatose has been regie- and stereospeciflcally synthesized by coupling of the 3, 6-branched gluco-trisaccharide Schmidt reagent 10 with a mixture of multiol 3,6-branched gluco-trisac-charides 13 which consists of free 5,6'-OH trisaccharide, free 5,2' ,6'-OH trisaccharide, free 5,3' ,6'-OH trisaccharide and so on. The compounds 10 and 13 were prepared from 1,2:5,6-di-O-isopropylidene-α-D-glucofuranose, 2, 3, 4, 6-tetra-O-ben-zoyl-α-D-glucopyranosyl trichloroacetimidate, and 2,3,4,6-te-tra-O-acetyl-α-D-glucopyranosyl trichloroacetimidate through re-gio- and stereoselective manners.

关 键 词：OLIGOSACCHARIDE phytoalexin-elicitor regio- and stereoselective synthesis 

分 类 号：O629[理学—有机化学]