Question

1. Draw glucose B-D-glucose in a chair form, and circle the anomeric carbon. Why is the anomeric carbon significant? 2. Why is cyclization of sugars important? What does the concept of mutarotation indicate to us about dual roles of monosaccharides? Two part question: 3. Why are monosaccharides most commonly found in pyran and furan ring forms, rather than: A) other ring motifs -(think along the lines of: why NOT 3,4, or 7 membered rings)? B) in their linear form? 4. Draw the ringed form of D-glucose with the following modifications: A) Convert to sugar acid at C-6. Name this one!

Answer 1

We have to draw the chair form of PD - glucose, which is shown below 01 HONO fig-B.Dogumnose We have to circle the anomenis courbon, the a cambon is known as a anomenic Cambon, le OH OH " Anomenic Carrobon. Anomenic carbon is important because the carbohydrates molecules are reacts with their anomeric carbon. For example the oxidation of B-D-gluose by Bry/H2O is 250 times forster than that of the x-D- -glucose. Also other reduction reactions ocur on it. That's why it is very importante