Abstract
In this study, O-glycosides of cholesterol derivatives Δ7-cholestenol and Δ8(14)-cholestenol were prepared by Schmidt glycosylation with various glycosyl imidates. In addition, 1,2,3-triazole-linked N-glycosides of Δ8(14)-cholestenol were prepared via the “click” reaction of proparzylic Δ8(14)-cholestenol with glycosyl azides. The anti-inflammatory activities of these molecules were investigated for inhibitory mRNA expression activity of CCL17 and CCL22, which are important biomarkers of atopic dermatitis. Both the O- and N-glycosides Δ7-cholestenol and Δ8(14)-cholestenol were observed to exhibit good anti-inflammatory activity in vitro. In particular, the 1,2,3-triazole-linked N-glycoside of Δ8(14)-cholestenol exhibited anti-inflammatory activity similar to that of O-glycoside in vitro and is expected to be more potent in vivo due to better stability.
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