Consider the structure of sucrose with labeled carbon atoms. Structure of sucrose with labeled carbon atoms. The glucose moiety is labeled 1 through 6 clockwise, starting from the carbon that forms the glycosidic bond. The fructose moiety is labeled 1 prime through 6 prime counter clockwise starting with the carbon attached to the hydroxyl group and the 2 prime carbon that forms the glycosidic bond. Identify the anomeric carbon atoms of sucrose.