Concept explainers
(a)
Interpretation: The given Haworth projection is to be converted into three-dimensional representation by the use of chair pyranose ring.
Concept introduction: The structural representation of sugar molecule in cyclic form is known as Haworth projection. Sugar molecule that has six-membered-ring is known as pyranose and a sugar molecule that has five-membered-ring is called furanose.
(b)
Interpretation: The given Haworth projection is to be converted into three-dimensional representation by the use of chair pyranose ring.
Concept introduction: The structural representation of sugar molecule in cyclic form is known as Haworth projection. Sugar molecule that has six-membered-ring is known as pyranose and a sugar molecule that has five-membered-ring is called furanose.
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Organic Chemistry - With Access (Custom)
- Label attached Haworth projection as an α or β anomer, and convert the Haworth projection to a six-membered ring with wedges and dashed wedges.arrow_forwardDraw a Haworth projection for each compound using the structures. α-D-tagatofuranosearrow_forwardExplain the method to separate enantiomers ?arrow_forward
- Draw the Fischer projections (D-isomer) of Arabinose and Mannose. Draw the Haworth projections of α-Arabinose and β-Mannose. Draw the structure of β-D-mannopyranosyl-(2→4)-α-D-arabinofuranoside.arrow_forwardConvert each aldohexose to the indicated anomer using a Haworth projection.arrow_forwardWithout referring to the chapter, draw the chair conformations of(a) b-d-mannopyranose (the C2 epimer of glucose).(b) a-d-allopyranose (the C3 epimer of glucose).(c) b-d-galactopyranose (the C4 epimer of glucose)arrow_forward
- Consider alanine a. How many chiral centers? b. How many stereoisomers? c. Draw the fischer projection for each stereoisomer and determine the absolute configuration for each chiral center.arrow_forwardDraw the α-d-tagatopyranose sugars using Haworth projections:arrow_forwardLabel the attached stereogenic center as R or Sarrow_forward
- For D-lyxose i. Draw an epimer at C3. ii. Draw a diastereomer that is not an epimer. iii. Draw the anomers of -D-lyxofuranose and -D-lyxopyranose. iv. Draw the product as Haworth projection when reacted with methanol catalysed by acid.arrow_forwardAs a fischer projection is the compound R or S and which group is the highest priority ?arrow_forwardDraw a Haworth projection for each compound using the structures. α-D-galactopyranosearrow_forward