Molecular design of potent tyrosinase inhibitors having the bibenzyl skeleton
作者:Hiromi Oozeki、Reiko Tajima、Ken-ichi Nihei
DOI:10.1016/j.bmcl.2008.08.053
日期:2008.10
In order to develop water soluble tyrosinase inhibitors, bibenzyl xyloside 1 isolated from Chlorophytum arundinaceum (liliaceae), and its derivatives 2 and 3 were synthesized by using Wittig reaction and trichloroimidate glycosylation procedure as key steps. Xylosides 1-3 showed potent tyrosinase inhibitory activity with IC(50)s of 1.6, 0.43, and 0.73 mu M, respectively, although each NMR data of synthetic bibenzyls was not identical to that of naturally occurring xyloside 1. (C) 2008 Elsevier Ltd. All rights reserved.
Synthesis and evaluation of bibenzyl glycosides as potent tyrosinase inhibitors
Bibenzyl glycosides 1–6 were synthesized from 2,4-dihydoxybenzaldehyde and xylose, glucose, cellobiose or maltose. The key steps in the synthesis were the Wittig reaction and trichloroacetimidate glycosylation. Tests for tyrosinase inhibitory activity showed that all were significantly active, indicating that they are unique hydrophilic tyrosinase inhibitors. Bibenzyl xyloside 2 is a particularly potent