Synthesis of α-L-fucopyranosyl disaccharides with thioglycosidic linkages and characterization of α-L-fucosidases from bovine kidney and epididymis by their inhibitory activities
摘要:
Sulfur-linked disaccharide analogs of three alpha-L-fucopyranosyl 2-acetamido-2-deoxy-beta-D-glucopyranosides and one alpha-L-fucopyranosyl beta-D-galactopyranoside were synthesized by substitution reactions of sulfonates and ring-opening reactions of aziridine as well as oxirane derivatives using 1-thio-alpha-L-fucopyranose as nucleophile. Fucosidases from bovine kidney and epididymis were inhibited by all of these disaccharide analogs and their Ki values range from 0.65 to 4.9 mM.