Show how you would prepare the following oligosaccharide. Fisher glycosylation is offlimits. Assume that you have commercial access only to the following monsoaccharides: D-glucose, D-galactose, D-mannose, L-fucose, L-rhamnose, D-glucosamine and D-galactosamine. You may use any other reagents you wish. Do not combine more than 3 reactions over a single arrow. Each reaction you use must give the indicated compound as the major product.
***please breakdown your answer into 3 parts: i) preparation of the monosaccharide building blocks; ii) coupling of the building blocks; iii) deprotection. Make it easy for me to follow your steps.