a) Draw the C-3 epimer of a-methyl-(D-glucopyranoside b) Write out the name of this sugar completely...
Question 2. As this is an open book test, you have the 8 aldohexose structures available to you. (9 marks) a) Draw the C-3 epimer of a-methyl-(D)-glucopyranoside b) Write out the name of this sugar completely c) What is the name of the C-5 epimer of (D)-mannose
Question 3 Hint: D-glucose, D-mannose and D-galactose are aldohexoses D-mannose is a C-2 epimer of D-glucose D-galactose is a C-4 epimer of D-glucose a) Draw the structures of D-mannose and a-D-mannose. b) Draw the structures of D-galactose and B-D-galactose
CH,OH b. Is the ketopentose a reducing sugar? c. Is the ketopentose a deoxy sugar? d. Is the ketopentose an amino sugar? e. Draw the L-2-ketopentose that also gives the alcohol sugar above, when treated with H, and Pt. 10.59 a. 10.60 a 10.47 Draw the alcohol sugar, aldonic acid, and uronic acid that can be formed from each monosaccharide. a. D-2-deoxyribose b. L-2-deoxyribose C. the C-3 epimer of D-2-deoxyribose 10.61 10.62 10.48 Draw the alcohol sugar, aldonic acid, and...
6). Draw the zig-zag structure of C-2 epimer and C-3 epimer of D-glucose. Draw one possible chair conformer of C-2 epimer. 6). Draw the zig-zag structure of C-2 epimer and C-3 epimer of D-glucose. Draw one possible chair conformer of C-2 epimer.
Draw the structure of lactose give Blucopyranose. (D-galactose is a C-4 epimer of D-glucose) is: B-D-galactopyranosyl-(1,4)-a-D-
Question 5 [1.5 pts] What sugar is the C-5 epimer of L-tagatose? You will be provided with a list from which you will select your answer.
3. Draw by hand and name the following monosaccharides a. anomer of a-D-altrose b. enantiomer of D-altrose c. The pyranose and furanose forms of D-altrose d. The epimer of D-altrose e. A diasteroisomer of D-altrose f. What is the relationship between the following: - i. D-psicose and D-fructose - ii. D-fructose and D-sorbose - iii. glucose and sucrose - iv. a-D-glucopyranose and a-D-glucofuranoseType
2. (20 points) a-D-Mannose is a sweet-tasting sugar, whereas B-D-mannose tastes bitter. A pure solution of a-D-mannose loses its sweet taste with time as it is converted to the Banomer. CH,OH i. Draw the structure of the anomer of D-mannose. Конной AUTOH -D-Mannose ii. Draw the mechanism of the acid-catalyzed epimerization of a-D-mannose to form the Banomer. Please use curved arrows when you draw the mechanism.
will rate, thanks When a certain trisaccharide is completely methylated (i.e. all of the free OH groups have been converted to OCH3 groups) and then hydrolyzed (i.e. all of the glycosidic linkages have been broken) equal molar amounts of 2, 3, 4, 6-tetra-O-methyl-D-galactose, 2, 3, 4-tri-O-methyl-D-mannose, and 1, 2, 4, 6-tetra-O- methyl-D-glucose are obtained. When this same trisaccaride is treated with B-galactosidase (an enzyme that hydrolyzes the indicated glycosidic bond indicated by its name) it yields D-galactose and a disaccharide....
Draw the structure for 3-isobutyl-4-methylhexane. What is the correct IUPAC name for this structure? a. 3-methyl-4-isobutylhexane b. 2,3-diethyl-5-methylhexane c. 4-ethyl-2,5-dimethylheptane d. 2-methyl-4-isobutylhexane e. 1,1-dimethyl-3-ethylhexane