4-alkoxycarbonyloxazoles as β-hydroxy-α-amino acid synthons: efficient stereoselective syntheses of 3-amino-2,3,6-trideoxyhexoses and a hydroxy amino acid moiety of Al-77-B
4-alkoxycarbonyloxazoles as β-hydroxy-α-amino acid synthons: efficient stereoselective syntheses of 3-amino-2,3,6-trideoxyhexoses and a hydroxy amino acid moiety of Al-77-B
A derivative of D-ristosamine, the enantiomer of a carbohydrate component of the antibiotics ristomycin, has been prepared from ethyl L-lactate in a stereoselective manner using the Mitsunobu reaction as a key step.