Biology 1201A Lecture Notes - Lecture 13: Disaccharide, Polysaccharide, Anomer
2 Oct 2016
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When the highest functional group (with saccharides, that"d be the oh group) is on the right side, it is an d- configuration. When this happens, it gets a minus - distinction. Thus is true of all similar categories, like the l-ketohexoses has 4 chiral centers, which means there are 24 (=16) stereoisomers. Half of those are d and half are l. so 16/2 gives us 8. " s think this through: each aldohexose: let, epimers: two sugars that differ only in the configuration around 1 c atom, ex: d-mannose and d-galactose are epimers of d-glucose, differing only at. C-2 and c-4: five most common monosaccharides: D-mannose d-glucose d-galactose d-fructose d-ribose ( is the ketose of glucose ) ( ribose is all- right" ) Those on the right side in a fischer projection will point down when cyclic: if the hydroxyl group of the anomer carbon is on the same side as c-6, it is cis ( )anomer.
