Organic Chemistry

Learn the toughest concepts covered in Organic Chemistry with step-by-step video tutorials and practice problems by world-class tutors.

24. Carbohydrates

Disaccharide

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By now you guys should be pro's at monosaccharides, but let's take it a step further and explore what a disaccharide is. In its simplest terms, a disaccharide is two monosaccharides bound by an O-glycosidic linkage (α or β). Below we will take a look at some important ones to remember.

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Important Disaccharides:

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Problem

Identify the following disaccharides as reducing sugars (RS) or non-reducing sugars (NS)

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Problem

Identify the following disaccharides as reducing sugars (RS) or non-reducing sugars (NS)

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Problem

Draw a theoretical acid-catalyzed Fischer Glycosidation mechanism for the condensation of D-Glucose into cellubiose. (Note:This reaction would lead to very poor yields of cellubiose- can you hypothesize why?)