Homework Answers
A) sialic acid exists in both anomeric forms. Alpha and beta.
Anomers are the stereoisomers which have different configuration at anomeric carbon that is carbonyl carbon. B)There' mutarotation between both forms. Mainly exist in beta form.
C)Yes. It is a deoxy sugar. Deoxy sugars means there's only H present at a carbon not OH group. In this strycstru at 3rd carbon only H is present.
D)
5 chiral carbons. Chiral
carbons have 4 different groups. c-1to c-3 and c-9 are not chiral
carbons.
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2. Answer the following quetions about sialic acid: a. Is it an α or β anomeric...
Please use the bottom portion in bold to answer the questions and please explain your answer. Tha...
Please use the bottom portion in bold to answer the questions
and please explain your answer. Thank you
2. Classify each ring-form sugar D through F in the manner requested below NH olf a) D or L? b) Number of carbons? pentase c) Highest priority group? d) Type of Derivative? e) Ring Form? f) Type of Anomer (α or β)? Number of carbons choices: triose, tetrose, pentose, etc. Highest priority group choices: aldose or ketose. (er aldenic oeid f alb...
Post-lab questions (1) In a Michael reaction, an α carbon attacks the β carbon of an α,β-unsatura...
Post-lab questions (1) In a Michael reaction, an α carbon attacks the β carbon of an α,β-unsaturated carbonyl com pound to afford a 1,5-dicarbonyl compound. Ethyl acetoacetate has two a carbons: why does the a carbon sandwiched between the two carbonyls conduct the attack? Ph Ph 0 Ph Michael OCH2CH3 5 OCH2CH3 OCH2CH 0 This forms... ...not this: Why? (2) In a Robinson annulation, an α,β-unsaturated carbonyl compound reacts with a carbonyl compound to afford a (new) cyclic α,β-unsaturated ketone...
1. Draw glucose B-D-glucose in a chair form, and circle the anomeric carbon. Why is the...
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....
5 a) identify the anomeric carbon in the below molecule b) identify the thpe of ring...
5 a) identify the anomeric carbon in the below molecule
b) identify the thpe of ring pyranose or furanose
c) identify if it is a or b
6 a) identify the anomeric carbon in the below molecule
b) identify the thpe of ring pyranose or furanose
c) identify if it is a or b
7 The structure of 6-carbon ketose sugar is shown. Draw the
common cyclic structure of this structure (both a and b form)
8 Identify the relationship...
The general solution to the second-order differential equation d2ydt2−4dydt+7y=0 is in the form y(x)=eαx(c1cosβx+c2sinβx). Find the values of α and β, where β>0. Answer: α= and β=
The general solution to the second-order differential equation d2ydt2−4dydt+7y=0d2ydt2−4dydt+7y=0 is in the form y(x)=eαx(c1cosβx+c2sinβx).y(x)=eαx(c1cosβx+c2sinβx). Find the values of αα and β,β, where β>0.β>0.Answer: α=α= and β=β=
Which of the following are correct? Justify your answer. Note that in order to answer if α╞ β fin...
Which of the following are correct? Justify your answer. Note that in order to answer if α╞ β find the models M(α) in which α is true, similarly find the models M(β) in which β is true and then check whether M(α) is a subset of M(β) or not. (a) (A ^ B) ╞ (A⇔B) (b) (A⇔B) ╞ (A∨B) (c) (A⇔B) ╞ (¬A∨B)
Culhydrates 1. Complete th Complete the table by classifying each sugar sugar (A, B, C, D)...
Culhydrates 1. Complete th Complete the table by classifying each sugar sugar (A, B, C, D) below based on carbonyl group and number of carbons (c.8. aldohexose, ketotriose, etc.). Classify them as an antiomer. Indicate the number of chiral carbons for each sugar. Sugar Classification based on carbonyl group and number of carbons Lor D enantiomer Number of chiral carbons н-с-он HO-6-H. н-с-он ін,он CH,OH C=0 HO-C-H н-с-он HO-C-H. ён,он снон c=0 | HO-C-H ін,он H-C-OH CH, OH CD 2....
1a-h Chapters 21 and 22: 14 1. Consider the structure shown on the right and answer...
1a-h
Chapters 21 and 22: 14 1. Consider the structure shown on the right and answer the following (4 questions about it (fill in blanks or circle proper choice). a. Its molecular formula is C H O and so it fits the general formula for a carbohydrate, which is Ca b. Specifically, this structure is (a D/ an L) (aldo/keto) (pent/hex) (ase/ose). c. Will it be optically active?_ d. If the top carbon was converted to a CH,OH, would it...
Sugpone to et. Which of e following is true? ß are both tautologies ß and β and α ν β are both contradictions. β and α V β are both contingent. b, α None of the above. d. (s) Which of the followin...
Sugpone to et. Which of e following is true? ß are both tautologies ß and β and α ν β are both contradictions. β and α V β are both contingent. b, α None of the above. d. (s) Which of the following is equivalent to "The bad guys will win if and only if the good guys do nothing"? a. If the good guys do nothing, the bad guys will wiın b. The bad guys will win unless the...
39. The following compounds have 2 stereogenic carbons, therefore 4 stereoisomeric structures (3 if there is...
39. The following compounds have 2 stereogenic carbons, therefore 4 stereoisomeric structures (3 if there is a meso-form) These are not cyclic compounds. a) Draw the structure. b) Identify the stereogenic carbons. c) Assign the Cahn- Ingold-Prelog order of priority for the elements attached to each chiral center? d) Draw the all the stereosiomers for your compound. Assign the R and S configuration of each chiral carbon, label the enantiomeric pairs and indicate the diastereomeric relationships, and if any are...
Please use the bottom portion in bold to answer the questions
and please explain your answer. Thank you
2. Classify each ring-form sugar D through F in the manner requested below NH olf a) D or L? b) Number of carbons? pentase c) Highest priority group? d) Type of Derivative? e) Ring Form? f) Type of Anomer (α or β)? Number of carbons choices: triose, tetrose, pentose, etc. Highest priority group choices: aldose or ketose. (er aldenic oeid f alb...
Post-lab questions (1) In a Michael reaction, an α carbon attacks the β carbon of an α,β-unsaturated carbonyl com pound to afford a 1,5-dicarbonyl compound. Ethyl acetoacetate has two a carbons: why does the a carbon sandwiched between the two carbonyls conduct the attack? Ph Ph 0 Ph Michael OCH2CH3 5 OCH2CH3 OCH2CH 0 This forms... ...not this: Why? (2) In a Robinson annulation, an α,β-unsaturated carbonyl compound reacts with a carbonyl compound to afford a (new) cyclic α,β-unsaturated ketone...
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....
5 a) identify the anomeric carbon in the below molecule
b) identify the thpe of ring pyranose or furanose
c) identify if it is a or b
6 a) identify the anomeric carbon in the below molecule
b) identify the thpe of ring pyranose or furanose
c) identify if it is a or b
7 The structure of 6-carbon ketose sugar is shown. Draw the
common cyclic structure of this structure (both a and b form)
8 Identify the relationship...
Culhydrates 1. Complete th Complete the table by classifying each sugar sugar (A, B, C, D) below based on carbonyl group and number of carbons (c.8. aldohexose, ketotriose, etc.). Classify them as an antiomer. Indicate the number of chiral carbons for each sugar. Sugar Classification based on carbonyl group and number of carbons Lor D enantiomer Number of chiral carbons н-с-он HO-6-H. н-с-он ін,он CH,OH C=0 HO-C-H н-с-он HO-C-H. ён,он снон c=0 | HO-C-H ін,он H-C-OH CH, OH CD 2....
1a-h
Chapters 21 and 22: 14 1. Consider the structure shown on the right and answer the following (4 questions about it (fill in blanks or circle proper choice). a. Its molecular formula is C H O and so it fits the general formula for a carbohydrate, which is Ca b. Specifically, this structure is (a D/ an L) (aldo/keto) (pent/hex) (ase/ose). c. Will it be optically active?_ d. If the top carbon was converted to a CH,OH, would it...
Sugpone to et. Which of e following is true? ß are both tautologies ß and β and α ν β are both contradictions. β and α V β are both contingent. b, α None of the above. d. (s) Which of the following is equivalent to "The bad guys will win if and only if the good guys do nothing"? a. If the good guys do nothing, the bad guys will wiın b. The bad guys will win unless the...
39. The following compounds have 2 stereogenic carbons, therefore 4 stereoisomeric structures (3 if there is a meso-form) These are not cyclic compounds. a) Draw the structure. b) Identify the stereogenic carbons. c) Assign the Cahn- Ingold-Prelog order of priority for the elements attached to each chiral center? d) Draw the all the stereosiomers for your compound. Assign the R and S configuration of each chiral carbon, label the enantiomeric pairs and indicate the diastereomeric relationships, and if any are...
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