Structure du l-2-(1,2:5,6-di-O-isopropylidène-α-d-allofuranos-3-yl)dibenzylglycinate de tert-butyle, C32H43NO8

The condensation reaction of the enolate of tert-butyl dibenzylaminoacetate with the carbonyl of 1,2:5,6-di-O-isopropylidene-α-D-ribo-hexofuranos-3-ulose is diastereoselective and leads to the title compound with absolute stereochemistry 2S,3'R. The furanose ring has a half-chair conformation. An intramolecular hydrogen bond links the hydroxyl group at C3' to the carboxyl O atom of the glycinate group