Synthesis and galectin-binding activities of mercaptododecyl glycosides containing a terminal β-galactosyl group
摘要:
Mercaptododecyl glycosides containing a terminal beta-galactosyl group were prepared from D-galactose or from D-lactose via hexa-O-acetyl-lactal (10) as a key intermediate. Interactions of these glycolipids (5 kinds) and galectins (beta-galactoside binding lectins, 6 species) were evaluated by surface plasmon resonance (SPR) method. High binding responses were observed for the lactoside, 2-deoxy-lactoside, and lactosaminide with some galectins (Gal-3, -4, -8), whereas the galactoside and 2,3-dideoxy-lactoside showed low binding activities. (C) 2010 Elsevier Ltd. All rights reserved.
Synthesis and galectin-binding activities of mercaptododecyl glycosides containing a terminal β-galactosyl group
摘要:
Mercaptododecyl glycosides containing a terminal beta-galactosyl group were prepared from D-galactose or from D-lactose via hexa-O-acetyl-lactal (10) as a key intermediate. Interactions of these glycolipids (5 kinds) and galectins (beta-galactoside binding lectins, 6 species) were evaluated by surface plasmon resonance (SPR) method. High binding responses were observed for the lactoside, 2-deoxy-lactoside, and lactosaminide with some galectins (Gal-3, -4, -8), whereas the galactoside and 2,3-dideoxy-lactoside showed low binding activities. (C) 2010 Elsevier Ltd. All rights reserved.
A regio- and stereo-controlled, one-pot amidoglycosylation of alcohols has been achieved using O-acetylated glycals, trichloroethoxysulfonamide, and iodosobenzene in the presence of a rhodium(ii) catalyst.
of alcohols has been developed using O-acetylated glycals, trichloroethoxysulfonamide, and iodosobenzene. This one-pot amidoglycosylation was applied to a variety of primary and secondaryalcohols to afford the beta-O-glycosides with acceptable yields up to 84%. The reaction would proceed via stereoselective intermolecular aziridination of the glycal from the alpha-face followed by SN2 reaction with
Mercaptododecyl glycosides containing a terminal beta-galactosyl group were prepared from D-galactose or from D-lactose via hexa-O-acetyl-lactal (10) as a key intermediate. Interactions of these glycolipids (5 kinds) and galectins (beta-galactoside binding lectins, 6 species) were evaluated by surface plasmon resonance (SPR) method. High binding responses were observed for the lactoside, 2-deoxy-lactoside, and lactosaminide with some galectins (Gal-3, -4, -8), whereas the galactoside and 2,3-dideoxy-lactoside showed low binding activities. (C) 2010 Elsevier Ltd. All rights reserved.