STRUCTURAL VARIATIONS ON N-ACETYLNEURAMINIC ACID .21. 2,3-DIDEHYDRO-2-DEOXYSIALIC ACIDS STRUCTURALLY VARIED AT C-5 AND THEIR BEHAVIOR TOWARDS THE SIALIDASE FROM VIBRIO-CHOLERAE

被引:0
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作者
SCHREINER, E
ZBIRAL, E
KLEINEIDAM, RG
SCHAUER, R
机构
[1] UNIV VIENNA,INST ORGAN CHEM,WAHRINGER STR 38,A-1090 VIENNA,AUSTRIA
[2] CHRISTIAN ALBRECHTS UNIV KIEL,INST BIOCHEM,W-2300 KIEL 1,GERMANY
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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
2,3-Didehydro-2-deoxy-N-trifluoroacetylneuraminic acid (5-trifluoroacetyl-Neu2en) (3) has been synthesised from Neu5Ac2en (1) by hydrazinolysis, to give Neu2en (2), followed by N-trifluoroacetylation. 2,3-Didehydro-2,3-dideoxy-D-glycero-D-galacto-2-nonulopyranosonic acid (Kdn2en, 8) and 5-azido-2,3-didehydro-2,3,5-trideoxy-D-glycero-D-galacto-2-nonulopyranosonic acid (5-azido-5-deoxy-Kdn2en, 9) have been prepared from the acetylated methyl esters of Kdn (4) and 5-azido-5-deoxy-Kdn (5) via Zemplen saponification. The behaviour of the above 2,3-didehydro-2-deoxysialic acids towards Vibrio cholerae sialidase has been investigated.
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页码:61 / 66
页数:6
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