devarshi-dt-logo

Question:

The correct statement about the following disaccharide is: ring (a) is furanonse with α- glycosidic link; ring (b) is furanonse with α- glycosidic link; ring (a) is pyranonse with α- glycosidic link; ring (b) is pyranonse with β- glycosidic link

ring (b) is pyranonse with β- glycosidic link

ring (a) is pyranonse with α- glycosidic link

ring (a) is furanonse with α- glycosidic link

ring (b) is furanonse with α- glycosidic link

Solution:

Ring (a) is pyranose (six membered ring) whose anomeric C1 atom and α (below the plane) is joined with groups at C2 of ring (b) (furanose ring i.e., five membered ring)