Add time:07/20/2019         Source:sciencedirect.com

We synthesized several candidates of 24(S)-hydroxycholesterol (24S-OHC) esters, which are involved in neuronal cell death, through catalysis with acyl-CoA:cholesterol acyltransferase-1 (ACAT-1). We studied the regioselectivity of the acylation of the secondary alcohol at the 3- or 24-position of 24S-OHC. The appropriate saturated and unsaturated long-chain fatty acids were esterified with the protected 24S-OHC and then de-protected to afford the desired esters at a satisfactory yield. We then confirmed by HPLC monitoring that the retention times of four esters of 24S-OHC, namely 3-oleate, 3-linoleate, 3-arachidonoate and 3-docosahexaenoate, were consistent with those of 24S-OHC esters observed in 24S-OHC-treated SH-SY5Y cells.

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