Abstract
The galactomannan from Antrodia cinnamomea (AC) is characterized as one of the important bioactive components that exhibits potential immunostimulatory propriety. The biological function of its corresponding oligosaccharide fragments has not been revealed yet. In this study, we reported the first chemical synthesis of the series of oligosaccharide fragments related to AC galactomannan via the convergent glycosylation strategy. The preliminary immunological evaluation of these synthesized AC oligosaccharides disclosed that the backbone tetrasaccharide 1d showed the best immunomodulatory ability on enhancing proliferation, phagocytosis and cytokines secretion of Raw264.7 macrophages in vitro, indicating its immense potential as an immunostimulant candidate.
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