Concept explainers
Interpretation:
The Haworth projections of α-D-mannopyranose and β-D-mannopyranose has to be drawn.
Concept Introduction:
The cyclic representation of monosaccharides is known as Haworth projection. The five membered ring is said to be Furanose and six membered ring is said to be Pyranose. The five or six membered cyclic hemiacetals which have planar structure will be lying perpendicular to the plane of the paper.
In monosaccharides, the alcohol and carbonyl groups both are present. The two groups react with each other to form cyclic hemiacetals.
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Organic Chemistry
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- Treatment of a 258 mg sample of amylopectin by the methylation and hydrolysis procedure described yielded 12.4 mg of 2,3‑di‑O‑methylglucose. Determine what percentage of the glucose residues in amylopectin contained an (α1→6) branch. (Assume that the average molecular weight of a glucose residue in amylopectin is 162 g/mol and the molecular weight of 2,3‑di‑O‑methylglucose is 208 g/mol.) ( α1→6) branched glucose residues: %arrow_forwardConvert these in Haworth forms and show alpha and beta formsarrow_forwardHow many asymmetric carbons and stereoisomers are there for an aldohexose? For aketohexose?arrow_forward
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