Question
The correct statement about the following disaccharide
The correct statement about the following disaccharide
A.
ring (i) is pyranose with $$\alpha {\text{ - }}$$glycosidic linkage
B.
ring (i) is furanose with $$\alpha {\text{ - }}$$glycosidic linkage
C.
ring (ii) is pyranose with $$\alpha {\text{ - }}$$glycosidic linkage
D.
ring (ii) is pyranose with $$\beta {\text{ - }}$$glycosidic linkage
Answer :
ring (i) is pyranose with $$\alpha {\text{ - }}$$glycosidic linkage
Solution :
The disaccharide is sucrose, with ring (i) having 6-members and hence is a pyranose and ring (ii) has 5-members and hence is a furanose. $$C{\text{ - }}1$$ of ring (i) and $$C{\text{ - 2}}$$ of ring (ii) has an $$\alpha {\text{ - }}$$ glycosidic linkage.
The disaccharide is sucrose, with ring (i) having 6-members and hence is a pyranose and ring (ii) has 5-members and hence is a furanose. $$C{\text{ - }}1$$ of ring (i) and $$C{\text{ - 2}}$$ of ring (ii) has an $$\alpha {\text{ - }}$$ glycosidic linkage.
