Crystal structure of (−)-(2R,3S,4R,5R)-5-(1,3-di­thian-2-yl)-3-methyl-1-(triiso­propyl­sil­yloxy)hexane-2,4-diol

The title compound, C(20)H(42)O(3)S(2)Si, crystallized with two independent mol­ecules (A and B) in the asymmetric unit. They consist of syn,anti,anti-stereo­tetrads with a 1,3-di­thiane motif and a primary alcohol protected as the triisopropyl silyl ether. The 1,3-di­thiane ring adopts a chair conformation, while the rest of each mol­ecule displays a common zigzag conformation. There is an intra­molecular O—H⋯O hydrogen bond in each mol­ecule. In the crystal, the A and B mol­ecules are linked via O—H⋯O hydrogen bonds, forming –A–B–A--B-- chains along [010]. The absolute structure was determined by resonant scattering (anomalous scattering) [Flack parameter = 0.035 (8)].