2-Azido-3,4;6,7-di-O-isopropyl­idene-α-d-glycero-d-talo-heptopyran­ose

In the title compound, C13H21N3O6, the six-membered ring adopts a twist-boat conformation with the azide group in the bowsprit position. The azide group is disordered over two sets of sites in a 0.642 (10):0.358 (10) ratio. The crystal structure consists of O—H⋯O hydrogen-bonded trimer units. The absolute configuration was determined from the use of d-mannose as the starting material

N-Benzyl-1,3-dide­oxy-1,3-imino-l-xylitol

The structure determination confirms the stereochemistry of the title compound, C12H17NO3, which contains a four-membered azetidine ring system. The absolute configuration was determined by the use of d-glucose as the starting material. In the crystal, O—H⋯O and O—H⋯N hydrogen bonds link the mol­ecules into layers in the ab plane

Azetidine Iminosugars from the Cyclization of 3,5-Di-<i>O</i>-triflates of α-Furanosides and of 2,4-Di-<i>O</i>-triflates of β-Pyranosides Derived from Glucose

Primary amines with either 3,5-di-<i>O</i>-ditriflates of α-furanosides or 2,4-di-<i>O</i>-triflates of β-pyranosides form bicyclic azetidines in high yield

Eight Stereoisomers of Homonojirimycin from d-Mannose

Although there are 32 6-azidoheptitols, there are only 16 homonojirimycin (HNJ) stereoisomers. Two epimeric azidoalditols derived from d-mannose allow the synthesis in water of eight stereoisomers of HNJ