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Reactions of monosaccharides with beta-ketonic

REACTIONS OF MONOSACCHARIDES WITH BETA-KETONIC ESTERS 101... [Pg.101]

Garcia Gonzalez, F Reactions of Monosaccharides with beta-Ketonic Esters and Related Substances, 11, 97-143... [Pg.386]

Monosaccharides normally exist as cyclic hemiacetals rather than as open-chain aldehydes or ketones. The hemiacetal linkage results from reaction of the carbonyl group with an OH group three or four carbon atoms away. A five-membered cyclic hemiacetal is called a furanose, and a six-membered cyclic hemiacetal is called a pyranose. Cyclization leads to the formation of a new chirality center called the anomeric center and the production of two diastereomeric hemiacetals called alpha (a) and beta (fi) anomers. [Pg.1035]



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Reaction with ketone

Reactions of Monosaccharides

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