7) Label the following monosaccharides as D and L in the boxes below. H. H O H H. O H. O H-OH H-OH H-OH H-OH HO- -H H -OH HO -H H- -OH H-OH HOH H- -OH H- -OH H- -OH HO -H HO H HO- H H-OH H- -OH HO -H H -OH CH₂OH CH2OH CH₂OH CH₂OH CH₂OH i) ii) iii) iv) v)

Draw the left and right saccharide formed when the disaccharide is hydrolyzed?

10. Classify each monosaccharide based on functional group and number of carbons OH HO–CH,C-CH-CH-CH-CH, OH a. HO-CH2C-CH2OH b. OH OH

Which compounds are d-monosaccharides? Which are l-monosaccharides?

Which monosaccharide is a-glucose? CH,OH CH,OH CH;OH CH,OH H. H. OH H. OH HO. H. OH H. H. H. HO. H. OH H. H. H. OH H. H. H. OH H. H. H. H. H. C OD O B O C OA A,

SuanswEred Which structure on the right represents the B-anomer of the monosaccharideshown below on the left? H. CHOH H-C-O HO- H--COH HO- HO A) HO. H-C-OH CHOH H C-OH HO- CH,OH B) IN

Disaccharides Disaccharides are carbohydrates composed of two monosaccharide units that are joined by a carbon-oxygen-carbon linkage known as a glycosidic linkage. Circle the disaccharide linkage in each of these disaccharides below. OH glucose OH HO HO OH HO HO HO но OH HO- HO OH OHO- HO OH HO glucose OH OH glucose OH OH OH glucose galactose -OH OH fructose maltose lactose sucrose There are different types of glycosidic linkages. They are characterized by the numbering of the alcohols that are linked in the ether. And the anomer of the sugar. For the maltose shown here, the sugars are [a/ẞ] anomers. Circle one. • Which alcohols are linked? Numbering proceeds around the ring starting with the anomeric carbon. OH HO HO HO 6 4 5 OH OHO- glucose 3 OH OH glucose Thus, this is alpha-1,4-maltose. Draw ẞ-1,4-maltose, where the glucose on the right has isomerized. 3 5 60

For each monosaccharide: [1] determine all acetal and hemiacetal carbons; [2] select the anomeric carbon; [3] designate the compound as an a or ß anomer, 6 CH2OH 5. H H CH2OH O 1CH2OH OH OH H a. 4 b. H H 12 OH ÓH Но H ÓH ÓH a. Carbon 1 is the hemiacetal carbon. Carbon 2 is the v acetal carbon. Carbon 4 is the v anomeric carbon. The compound is B b. Carbon 2 is the hemiacetal carbon. There is not an v acetal carbon. Carbon 4 is the v anomeric carbon. The compound is a v I-

Which monosaccharide is a-glucose? CH,OH CH,OH CH,OH CH,OH H. OH O. H. H. OH OH H. H. H. H. OH H. OH OH H. OH H. H H. H. H. B C OD OB OC OA

Identify the following monosaccharides as the D- or the L-isomer.