FORMYLATION OF PRIMARY HYDROXYL-GROUPS IN SUGARS

被引:18
作者
GAN, LX
WHISTLER, RL
机构
[1] PURDUE UNIV,WHISTLER CTR CARBOHYDRATE RES,W LAFAYETTE,IN 47907
[2] PURDUE UNIV,DEPT BIOCHEM,W LAFAYETTE,IN 47907
关键词
D O I
10.1016/0008-6215(90)84006-G
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
Application of 99% formic acid at 25° formylates primary hydroxyl groups as shown by the easy formation of 6-O-formyl-d-glucopyranose and 6-O-formyl-d-fructofuranose, isolated as their tetra-acetates in yields of 77% and 31%, respectively. Likewise, d-glucitol gave the 2,3,4,5-tetra-O-acetyl-1,6-di-O-formyl derivative (84%) and methyl a-d-glucopyranoside gave the 6-formate (74%) characterized as the crystalline triacetate. On storage of the triacetate in methanol at 25°, the formyl group was lost and the 2,3,6-triacetate was formed, whereas the corresponding tribenzoate was deformylated in acidic methanol without migration of the benzoyl groups. © 1990.
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页码:65 / 69
页数:5
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