Add time:08/20/2019         Source:sciencedirect.com

The thiomannoside is a key intermediate in the synthesis of polymannosaccharide. But its crystallographic study has not been reported. X-ray crystal structure analysis shows that the crystal of phenyl 2,3,4,6-tetra-O-acetyl-1-thio-α-d-mannopyranoside is in orthorhombic system, has P212121 space group. Its unit cell dimensions are a=9.1731(11), b=11.574(2), and c=21.199(3) Å, α=β=γ=90.00°, Z=4, V=2250.6(6) Å3, Dc=1.300 g/cm3. The crystallographic study reveals that the thiomannoside is an α-anomer. Most interestingly, the structure provides an evidence of existing C–H⋯O and C–H⋯S intramolecular and intermolecular hydrogen bonds.

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