1.

Disaccharides are of four types, namely 1,4'-glycosides, 1-6'-glycosides, 1,1'-glycosides are 1,5'-glycosides. Which of these will be reducing

Answer»

1.4'-
1,6'-
1,1'-
1,5'-

Solution :In 1,1'-glycosides, both the sugar units are linked through their anomeric (1 or 1') CARBON atoms, hence we GET acetals, not hemiacetals' and since acetals do not have -OH group at the anomeric carbon atom, they can't be CONVERTED into ALDEHYDES or ketones, hence these are non-reducing.


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