Fill in the missing structures and add curved arrows to show the mechanism of glycoside formation below. Step 1: Oxonium ion formation НО НО НО ОН НО- HO OH D-glucose Step 2: Alcohol addition OH + H-OH2 HO H-OR or H-OR НО НО OH HO oxonium ion :ÖH2 :ÖH2 НО HO НО + H2O НО ОН HO a B-D-glycoside OH НО OR OR an a-D-glycoside

Fill in the missing structures and add curved arrows to show the mechanism of glycoside formation below. Step 1: Oxonium ion formation НО НО НО ОН НО- HO OH D-glucose Step 2: Alcohol addition OH + H-OH2 HO H-OR or H-OR НО НО OH HO oxonium ion :ÖH2 :ÖH2 НО HO НО + H2O НО ОН HO a B-D-glycoside OH НО OR OR an a-D-glycoside

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Liv
Which structure shown below contains a keto, an ester, an amino and a hydroxy function? Click on a letter A through D to answer. OH NH2 OH NH2 HO А. C. он он OH NH2 C. D.
CWhen the following triglyceride is hydrolyzed using a 2M solution of KOH, which of the following occurs? H₂C-(CH₂) H₂C- H₂C-(CH₂) O-CH₂ H H (CH₂)s Submit H ông CH (CH₂) H ₂0 (CH₂)7 - CHI Carboxylate ions and glycerol with fully deprotonated alcohol groups are formed. Carboxylic acids and glycerol are formed. Carboxylate lons and glycerol are formed. Carboxylic acids and glycerol with fully deprotonated alcohol groups are formed.
Which of the following is a reducing sugar? HO но OH но но HO" "OH HO" "OH Он но OH он HO A D A В C
Xylulose-5-phosphate is an intermediate product of metabolism with two stereogenic centers, as shown in the given skeletal structure. It has 1S, 2R configuration at its stereogenic centers. Redraw xylulose-5-phosphate, showing the correct configuration at each of the stereogenic centers. OH fex 2 OH OH OH OH Click and drag to start drawing a structure. X Ś è
Identify the type of glycosidic bond for each of the following sugars. Choose from a-(1-2), a- (1-3), a-(1-4), a-(1-5), a-(1-6), B-(1-2), ß-(1-3), ß-(1-4), ẞ-(1-5), ß-(1-6), or a,ẞ- (1+2) CH₂OH 0 HO H H OH H H H OH O a-(1-6) glycosidic bond OB-(1-5) glycosidic bond OB-(1-6) glycosidic bond Oa-(1-5) glycosidic bond CH₂ HO H H OH H H 0 H HP OH
The sugars can be classified as either aldoses or ketoses. Classify each structure with the correct name. НО НО H Н CHO —H -H -OH -OH CH₂OH НО НО Н CH₂OH c=0 H -н -OH CH₂OH НО НО н CHO ketose -H -Н OH CH₂OH Answer Bank aldose CHO H-C-OH CH₂OH НО Н CH₂OH c=0 -Н -OH CH₂OH " CH2OH O CH2OH
H-C -OH CH₂OPO₂²- 3-phosphoglycerate ATP ADP Arrow-pushing Instructions AC XT H-C-OH :O: CH₂OPO3²- =C² H-C-OH -O OPO3² Enz-SH 3 CH₂OPO3²- 1,3-bisphosphoglycerate ADP PO S-Enz H-C-OH CH₂OPO3²- One step in the gluconeogenesis pathway for the biosynthesis of glucose is the partial reduction of 3-phosphoglycerate to give glyceraldehyde 3-phosphate. The process occurs by phosphorylation with ATP to give 1,3-bisphosphoglycerate, reaction with a thiol group on the enzyme to give an enzyme-bound thioester, and reduction with NADH. Draw curved arrows to show the movement of electrons in this step of the reaction mechanism. [Enzyme-bound thioester] NADH/H* NAD*, Enz-SH H H-C-OH CH₂OPO3²- Glyceraldehyde 3-phosphate :Ö: H-C-OH CH₂OPO3²- ADP 29