草酸

2,3,4,6-四-O-苄基-D-吡喃半乳糖三氯乙亚氨酸酯

benzyl 2,3-di-O-benzyl-4,6-O-benzylidene-α-D-mannopyranoside

1,2,3,4-tetra-O-benzoyl-6-O-trityl-D-mannopyranose

α-D-Mannopyranosyl azide