Answer:
Given that:
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-glucos...
3. a) Draw the structure of (2S,3S)-2,3-difluorobutane in an extended zig-zag line drawing using wedged and dashed bonds where appropriate. b) Is (2S,3S)-2,3-difluorobutane optically active? Explain
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 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
4) L-Idopyranose (L-idose) is the C-5 epimer of D-glucose (meaning only one stereocenter is changed). Using the proper chair configuration, show the structure of L-idose
Problem 4 (10 pts) D-allose is the C2-epimer of D-glucose. Draw the open form (Fischer Projection) structure of L-allose. Draw the structure of a-D-allopyranose Cellobiose is a disaccharide which contains two glucose units with a p(1-4) glycosidic linkage. Draw the structure of Cellobiose.
5. Draw the two chair conformer for each of the following cyclohexane's. Identify the one that is more stable by drawing a circle around i. a. 3-isopropyl-1-methylcyclohexane b. 2-butyl-1-isopropylcyclohexane c. 4-ethyl-1-cyclohexanol d. 4-chloro-1-propylcyclohexane
V. (6 pts) Draw the most stable chair conformer of trans-1-isopropyl-3-methylcyclohexane.
D-Allose is the C3-epimer of D-glucose. Which structure corresponds to methyl beta-D- allopyranoside? Select one: OCH, Оа. Но Он OCH ОН o b, НО ОН ОН OCH ОН О с. Но OCH ОН
plz follow the instruction (5) Write the structure of the major organic products of the following reactions in the zig-zag form (respect bond angles). Draw all bonds except C-H bonds, all lone pairs and all formal charges (where necessary). Do not use 'C' to label the carbons. Do not consider carbocation rearangements. (-12 Pts) (а) 1) NaNH2 (1 eq) 2) CH3CH2Br (1 eq) (b) 1) BHR2 2) H2О2, Он- (c) H2O, H2SO Hg2 (d) (5) Write the structure of the...
Which chair conformer (A D) represents the bond-line structure at left in its lowest energy state? D A-value Me 7.6 kJ/mol, A-value iPr 9.2 kJ /mol (a) (c) (d) (b)