(a) Heating d altrose with dilute acid produces a nonreducing anhydro sugar (C6H10O5) Methylation of the anhydro sugar followed by acid hydrolysis yields 2, 3, 4 tri O methyl D altrose The formation of the anhydro sugar takes place through a chair conformation of D altropyranose in which the CH2OH group is axial What is the structure of the anhydro sugar, and how is it formed (b) D Glucose also forms an anhydro sugar but the conditions required are much more drastic than for the corresponding reaction of D altrose Explain

Question: (a) Heating d-altrose with dilute acid produces a nonreducing anhydro sugar (C6H10O5). Methylation of the anhydro sugar followed by acid hydrolysis yields 2, 3, 4-tri-O-methyl-

(a) Heating d-altrose with dilute acid produces a nonreducing anhydro sugar (C6H10O5). Methylation of the anhydro sugar followed by acid hydrolysis yields 2, 3, 4-tri-O-methyl- D-altrose. The formation of the anhydro sugar takes place through a chair conformation of β-D-altropyranose in which the --CH2OH group is axial. What is the structure of the anhydro sugar, and how is it formed?
(b) D-Glucose also forms an anhydro sugar but the conditions required are much more drastic than for the corresponding reaction of D-altrose. Explain.

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