SYNTHESIS OF THE TETRASACCHARIDE REPEATING UNIT OF THE ANTIGEN FROM KLEBSIELLA TYPE-2

被引:0
|
作者
MISRA, AK [1 ]
ROY, N [1 ]
机构
[1] INDIAN ASSOC CULTIVAT SCI,DEPT BIOL CHEM,CALCUTTA 700032,W BENGAL,INDIA
关键词
OLIGOSACCHARIDE; SYNTHESIS; TETRASACCHARIDE REPEATING UNIT; KLEBSIELLA TYPE 2;
D O I
暂无
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The disaccharide ethyl 2,4,6-tri-O-acetyl-3-O-(2,3,4,6-tetra-O-benzyl-alpha-D-glucopyranosyl)-1-thio-beta-D-glucopyranoside (6) and methyl 2,6-di-O-benzyl-3-O-(methyl 2,3,4-tri-O-benzyl-alpha-D-glucopyranosyluronate)-beta-D-mannopyranoside (21) have been synthesized and condensed in the presence of methyl triflate to afford a tetrasaccharide derivative. Removal of protecting groups methyl 3-O-(methyl alpha-D-glucopyranosyluronate)-4-O-(3-O-alpha-D-glucopyranosyl-beta-D-glucopyranosyl)-beta-D-mannopyranoside (23), the repeating unit of the antigen from Klebsiella type 2, in the form of its methyl ester methyl glycoside.
引用
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页码:103 / 111
页数:9
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