methyl 3-O-benzyl-4,6-O-benzylidene-2-O-(2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl)-α-D-mannopyranoside

对硝基苯-Alpha-D-吡喃甘露糖苷

phenyl neopentyl keton trimethylsilyl enol ether