1,6-Anhydro-2,3-O-isopropylidene-b-D-mannopyranose - CAS 14440-51-8
Category: Carbohydrates
Molecular Formula:
C9H14O5
Molecular Weight:
202.2
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Structure:
Monosaccharides
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1.Chemical synthesis of a comb-shaped, branched stereoregular polysaccharide, 4-O-alpha-D-mannopyranosyl-(1-->6)-alpha-D-mannopyranan.
Kobayashi K1, Nomura K, Okada M. Carbohydr Res. 1993 Apr 7;242:161-6.
4-O-alpha-D-Mannopyranosyl-(1-->6)-alpha-D-mannopyranan (7) was prepared via ring-opening polymerization of 1,6-anhydro-2,3-di-O-benzyl-4-O-(2,3,4,6-tetra-O-benzyl-alpha-D- mannopyranosyl)-beta-D-mannopyranose (5) using phosphorus pentafluoride as initiator in dichloromethane at -60 degrees C, followed by debenzylation. Compound 5 was obtained via glycosidation of 1,6-anhydro-2,3-O- isopropylidene-beta-D-mannopyranose (1) with 2,3,4,6-tetra-O-benzyl-1-O-trichloroacetimidoyl-alpha-D-mannopyran ose (2) using p-toluenesulfonic acid as catalyst and subsequent transformation of the protecting groups of the resulting 1,6-anhydro-4-O-(2,3,4,6-tetra-O-benzyl-alpha-D-mannopyranosyl)-2,3- O-isopropylidene-beta-D-mannopyranose (3).
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CAS 14440-51-8 1,6-Anhydro-2,3-O-isopropylidene-b-D-mannopyranose

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