Methyl 4-O-benzoyl-2,3-O-isopropylidene-α-L-rhamnopyranoside

Methyl 4-O-benzyl-α-l-rhamno-pyrano-side

In the title compound, C14H20O5, an inter-mediate in the synthesis of oligosaccharides, the glycosidic [H-C-O-C(H3)] torsion angle ϕH is 52.3° and the exo-cyclic [H-C-O-C(H2)] torsion angle θH is -11.7°. The hexa-pyran-ose ring has a chair conformation. In the crystal, mol-ecules are linked by O-H⋯O hydrogen bonds, forming chains propagating along [010]. Enclosed within the chains are R 3 (3)(12) ring motifs involving three mol-ecules. The chains are linked via C-H⋯π inter-actions, forming a three-dimensional network.