Isoprop­yl 2,5-anhydro-3,4-di-O-tert-butyl­diphenyl­sil­yl-L-ribonate

Determination of the crystal structure of the title compound, C₄₀H₅₀O₅Si₂, firmly established its relative configuration and hence that of some related tetra­hydro­furan carboxyl­ates. The material crystallizes with Z' = 2. Except for the chiral centres, the two independent mol­ecules are related by a pseudo-centre of symmetry.