Question 5: a) Provide all missing intermediates and products in the reaction schemes below. НО. HO HO O OH "O- Reagent A O=2-0 H₂O, H+ O™ O™ UDP-Gal HO OH NH Reagent B HO но... + HO Product A ""OH NHAdc GlcNAc B-1,3-Galactosyl transferase H+ + Product B Disaccharide product

Organic Chemistry
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ISBN:9781305080485
Author:John E. McMurry
Publisher:John E. McMurry
Chapter26: Biomolecules: Amino Acids, Peptides, And Proteins
Section26.SE: Something Extra
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Question 5: a) Provide all missing intermediates and products in the reaction schemes below.
end
H
HO
HO
HO
он
Reagent A
O
H₂O, H+
+
N
UDP-Gal HO OH
NH
Reagent B
OH
HO
HO,,.
+ HO
Jean
Nucleophilic addition occurred
form Re / Si face
O
NHAdc
GlcNAc
H+
Product A
"OH
B-1,3-Galactosyl
transferase
H+
+
b) Complete the following scheme and circle the appropriate stereochemical descriptors
(Re or Si and R or S).
Product B
Disaccharide product
Hemiacetal
Hemicetal carbon has
R/S configuratrion
Transcribed Image Text:Question 5: a) Provide all missing intermediates and products in the reaction schemes below. end H HO HO HO он Reagent A O H₂O, H+ + N UDP-Gal HO OH NH Reagent B OH HO HO,,. + HO Jean Nucleophilic addition occurred form Re / Si face O NHAdc GlcNAc H+ Product A "OH B-1,3-Galactosyl transferase H+ + b) Complete the following scheme and circle the appropriate stereochemical descriptors (Re or Si and R or S). Product B Disaccharide product Hemiacetal Hemicetal carbon has R/S configuratrion
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