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  • Title: Synthetic studies on glycosphingolipids from protostomia phyla: synthesis of neogala-series glycolipid analogues containing a mannose residue from the earthworm Pheretima hilgendorfi.
    Author: Hada N, Matsusaki A, Sugita M, Takeda T.
    Journal: Chem Pharm Bull (Tokyo); 1999 Sep; 47(9):1265-8. PubMed ID: 10517007.
    Abstract:
    Two kinds of glycosphingolipid analogues from the earthworm Pheretima hilgendorfi were synthesized as follows: the trisaccharide 2-(tetradecyl)hexadecyl alpha-D-mannopyranosyl-(1-->4)-beta-D-galactopyranosyl-(1-->6)-beta-D- galactopyranoside (13) and the tetrasaccharide 2-(tetradecyl) hexadecyl alpha-D-galactopyranosyl-(1-->6)-[alpha-D-mannopyranosyl-(1-->4)]-beta-D - galactopyranosyl-(1-->6)-beta-D-galactopyranoside (20) were synthesized by stepwise condensation of suitably protected monosaccharide units. A 2-(trimethylsilyl)ethyl 2,3,4-tri-O-benzoyl-beta-D-galactopyranoside derivative (5) was used as the glycosyl acceptor and thiophenyl derivatives of D-galactose and D-mannose were used as donors respectively.
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