2-N-Benzyl-2,6-dide­oxy-2,6-imino-3,4-O-isopropyl­idene-3-C-methyl-D-allono­nitrile

X-ray crystallography firmly established the relative stereochemistry of the title compound, C₁₇H₂₂N₂O₃. The absolute configuration was determined by use of 2-C-methyl-D-ribonolactone as the starting material. The compound exists as O—H...N hydrogen-bonded chains of mol­ecules running parallel to the a-axis.