Rearrangements Changing the Structure of a Sugar Skeleton

This chapter shows selected examples of the rearrangement of the sugar skeleton leading to the open-chain derivatives. 

FIGURE 10.13 Unexpected rearrangement of pyranopyrans that open a route to pentenyl  

This observation opened a route to so-called pentenyl glycoside methodology [32, 33], which is now one of the most important methods of the creation of the glycosidic bond. 

FIGURE 10.14 Preparation of unsaturated sugars by Vasella procedure. 

FIGURE 10.15 Synthesis of complex polyhydroxylated products utilizing the VaseUa 

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