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(2 pts) Draw the following compounds: 1. a-, and B anomers of D-galactose (show your work...
Ch. 15 Carbohydrates 1) How many stereocenters are in: a) Glucose b) Fructose c) Galactose 2)...
Ch. 15 Carbohydrates 1) How many stereocenters are in: a) Glucose b) Fructose c) Galactose 2) Area-D-glucose and B-D-glucose anomers? Are they enantiomers? Explain 3) Draw Haworth structure of B-D-galactose and B-D-fructose. 4) Convert each Haworth projection to a Fisher projection
CH,OH b. Is the ketopentose a reducing sugar? c. Is the ketopentose a deoxy sugar? d....
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...
1) Monosaccharide Structures r str s, show the carbon atom numbers. A. Fisher projection of D-glucose...
1) Monosaccharide Structures r str s, show the carbon atom numbers. A. Fisher projection of D-glucose B. Haworth projection of β-D glucose C. chair representation of β-D glucose in its most favorable conformation | D. Fisher projection of D-Fructose E. Fisher projection of C3 epimer of D F. Haworth Projection of C3 epimer of D- glucose glucose
I. (12 pts) Give name: a. он b. d. Il. (4 pts) Write the following in...
I. (12 pts) Give name: a. он b. d. Il. (4 pts) Write the following in a Fisher projection. HS он NH2 III. (15 pts) Write structure of D-fructose in Fisher projection. Then write Haworth structure of a-D-fructose. Is a-D-glucose a reducing sugar?
1. Which of the following is an aldohexose? 2. Which of the following is a cetopentose? 3. Which of the following best d...
1.
Which of the following is an aldohexose?
2. Which of the following is a cetopentose?
3. Which of the following best describes the relationship
between D-glucose and D-fructose?
4. Which of the following is (are) L-alfohexose(s)?
5. Which of the following aldohexose(s) is (are)
dextrorotatory?
6. How many stereoisomers are possible for L-galactose? Draw
or look for its structure.
7. Which of the following conpounds is a pair of
enantiomers?
8. Draw the fisher projection for L-sedoheptulose and also...
1. (2 points each) Draw the chemical structures of the following two compounds. iodoform 71-butanal 2....
1. (2 points each) Draw the chemical structures of the following two compounds. iodoform 71-butanal 2. (2 points) Circle the compound that will give a positive result in the iodoform test. (a) acetophenone b) cyclopentanone c) isobutanol d) n-heptanal 3. (3 points) Convert the following molecule to a Fisher projection. OH | H Convert to a Fisher Projection H DH 1 OHHH HAH HEBH 4. (2 points) Circle the correct name of the following structure. ph a) (meso)-hydrobenzoin H -OH...
b) Write the structure of the following compounds (Fischer projection): (D)-serine, (S)-methionine c) Write the structure...
b) Write the structure of the following compounds (Fischer projection): (D)-serine, (S)-methionine c) Write the structure of the following tripeptide: H-Ala-Pro-Phe-OH 2. Determine the N-terminal amino acid of the above tripeptide (H-Ala-Pro-Phe-OH) using the Sanger method (chemical equation). 3. Starting from alanine and glycine synthetize the glycyl-alanine (H-Ala-Gly-OH) dipeptide using mixed anhydride coupling method with Boc (amino) and Bn (carboxyl) protecting groups (reagents, reaction conditions, chemical equations). 4. Starting from the appropriate aldehyde synthetize alanine using the Strecker synthesis (reactions,...
What is the amino acid sequence of bradykinin? (5 pts) 2. Given four D-aldopentoses A, B,...
What is the amino acid sequence of bradykinin? (5 pts) 2. Given four D-aldopentoses A, B, C and D. Bis epimeric with A at Cz. If B is subjected to the Kiliani-Fischer synthesis, two aldohexoses are produced - aldohexose E and D-glucose. If E is subjected to Ruff degradation, a D- aldopentose is obtained which is epimeric with Dat C. When C is reacted with HNO, the resulting aldaric acid is optically inactive. Draw the Fischer structures of A, B,...
Analyze each pair of compounds structures represent. Your cho cach pair of compounds below. Identify which...
Analyze each pair of compounds structures represent. Your cho cach pair of compounds below. Identify which class of isomers each pair of s represent. Your choices are: (i) constitutional, (ii) conformational, (iii) omers, (iv) diastereomer or (v) identical (non-isomers). Only one label for each pair should be used. For each case show work (drawings, (R)/(S), rotation of bonds, chair- "ps, etc) which led you to each answer for the pairs below. Any differences of answers between you and your peers...
Draw the structures of the following compounds 1. Draw the structures of the following compounds (in...
Draw the structures of the following compounds
1. Draw the structures of the following compounds (in your final exam, you will be asked to recognize 10 of these compounds- mix and match): hexachlorobenzene DDT hexachlorinated cyclohexane- Lindane biphenyl a hexachlorinated biphenyl a hexabrominated biphenyl pentachlorobenzene general formula for type A, B, C of organophosphate 2,4- dichlorophenoxyacetic acid (2,4-D) 2,3,7,8-tetrachlorodibenzo-p-dioxin 1,4-dioxin furan pentachlorophenol MTBE ВТЕХ perfluorooctane sulfonate (PFOS) bisphenol A nonylphenol atrazine а РАН
1. Draw the structures of the following...
Ch. 15 Carbohydrates 1) How many stereocenters are in: a) Glucose b) Fructose c) Galactose 2) Area-D-glucose and B-D-glucose anomers? Are they enantiomers? Explain 3) Draw Haworth structure of B-D-galactose and B-D-fructose. 4) Convert each Haworth projection to a Fisher projection
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...
1) Monosaccharide Structures r str s, show the carbon atom numbers. A. Fisher projection of D-glucose B. Haworth projection of β-D glucose C. chair representation of β-D glucose in its most favorable conformation | D. Fisher projection of D-Fructose E. Fisher projection of C3 epimer of D F. Haworth Projection of C3 epimer of D- glucose glucose
I. (12 pts) Give name: a. он b. d. Il. (4 pts) Write the following in a Fisher projection. HS он NH2 III. (15 pts) Write structure of D-fructose in Fisher projection. Then write Haworth structure of a-D-fructose. Is a-D-glucose a reducing sugar?
1.
Which of the following is an aldohexose?
2. Which of the following is a cetopentose?
3. Which of the following best describes the relationship
between D-glucose and D-fructose?
4. Which of the following is (are) L-alfohexose(s)?
5. Which of the following aldohexose(s) is (are)
dextrorotatory?
6. How many stereoisomers are possible for L-galactose? Draw
or look for its structure.
7. Which of the following conpounds is a pair of
enantiomers?
8. Draw the fisher projection for L-sedoheptulose and also...
1. (2 points each) Draw the chemical structures of the following two compounds. iodoform 71-butanal 2. (2 points) Circle the compound that will give a positive result in the iodoform test. (a) acetophenone b) cyclopentanone c) isobutanol d) n-heptanal 3. (3 points) Convert the following molecule to a Fisher projection. OH | H Convert to a Fisher Projection H DH 1 OHHH HAH HEBH 4. (2 points) Circle the correct name of the following structure. ph a) (meso)-hydrobenzoin H -OH...
b) Write the structure of the following compounds (Fischer projection): (D)-serine, (S)-methionine c) Write the structure of the following tripeptide: H-Ala-Pro-Phe-OH 2. Determine the N-terminal amino acid of the above tripeptide (H-Ala-Pro-Phe-OH) using the Sanger method (chemical equation). 3. Starting from alanine and glycine synthetize the glycyl-alanine (H-Ala-Gly-OH) dipeptide using mixed anhydride coupling method with Boc (amino) and Bn (carboxyl) protecting groups (reagents, reaction conditions, chemical equations). 4. Starting from the appropriate aldehyde synthetize alanine using the Strecker synthesis (reactions,...
What is the amino acid sequence of bradykinin? (5 pts) 2. Given four D-aldopentoses A, B, C and D. Bis epimeric with A at Cz. If B is subjected to the Kiliani-Fischer synthesis, two aldohexoses are produced - aldohexose E and D-glucose. If E is subjected to Ruff degradation, a D- aldopentose is obtained which is epimeric with Dat C. When C is reacted with HNO, the resulting aldaric acid is optically inactive. Draw the Fischer structures of A, B,...
Analyze each pair of compounds structures represent. Your cho cach pair of compounds below. Identify which class of isomers each pair of s represent. Your choices are: (i) constitutional, (ii) conformational, (iii) omers, (iv) diastereomer or (v) identical (non-isomers). Only one label for each pair should be used. For each case show work (drawings, (R)/(S), rotation of bonds, chair- "ps, etc) which led you to each answer for the pairs below. Any differences of answers between you and your peers...
Draw the structures of the following compounds
1. Draw the structures of the following compounds (in your final exam, you will be asked to recognize 10 of these compounds- mix and match): hexachlorobenzene DDT hexachlorinated cyclohexane- Lindane biphenyl a hexachlorinated biphenyl a hexabrominated biphenyl pentachlorobenzene general formula for type A, B, C of organophosphate 2,4- dichlorophenoxyacetic acid (2,4-D) 2,3,7,8-tetrachlorodibenzo-p-dioxin 1,4-dioxin furan pentachlorophenol MTBE ВТЕХ perfluorooctane sulfonate (PFOS) bisphenol A nonylphenol atrazine а РАН
1. Draw the structures of the following...
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