NPB 101 Lecture Notes - Lecture 6: Anomer, Glycosidic Bond, Fischer Projection
2 Oct 2018
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Document Summary
Fructose forms a furanose when carbon 5 attacks the carbonyl carbon, glucose forms a pyranose when carbon 5 attacks the carbonyl carbon, convert a fischer projection to haworth (cyclic) form. Oh groups that point left on fischer become up on haworth. Oh groups that point right on fischer become down on haworth. Oh group on anomeric carbon (fischer carbonyl) can be either up (beta) or. Down (alpha: the ch2oh group on absolute configuration carbon (carbon 5) points up for d, and down for l. Have a formula (ch2o)n, and typically contain three to seven carbon atoms: most oxygens in monosaccharides are found in hydroxyl (oh) groups, but one of them is part of a carbonyl (c=o) group. The position of the carbonyl (c=o) group can be used to categorize the sugars: If sugar has an aldehyde group, meaning that carbonyl c is last one in chain, it is known as an aldose.
