186581-53-3
重氮甲烷
+
6763-46-8
[(2R,3S,4S,5R)-2,3,4,5-tetraacetyloxy-6-oxohexyl] acetate
→
5456-68-8
penta-O-acetyl-keto-D-galacto-1,2-dideoxy- [3]octulose