Synthesis of lipid A analogues containing glucose instead of glucosamine and their LPS-antagonistic activities
作者:Masao Shiozaki、Yukiko Watanabe、Yuji Iwano、Toshio Kaneko、Hiromi Doi、Daisuke Tanaka、Takaichi Shimozato、Shin-ichi Kurakata
DOI:10.1016/j.tet.2005.03.034
日期:2005.5
Lipid A analogues containing glucose in substitution for glucosamine on the reducing end were synthesized, and the inhibitory activities on LPS-induced TNF alpha production (LPS-antagonistic activity) in vitro using human whole blood cells were measured. The IC50 values (nM) of these ten compounds, 8, 14, 21, 31, 40, 51, 57, 62, 67 and 72, were 11.2, 15.4, 2.7, 0.1, 0.4, 1.3, 3.2, 3.2, 1.4 and 14.4, respectively. And also inhibitory activities (ID50) on TNF alpha production toward galactosamine loaded C3H/HeN mice in vivo of compounds 21, 31, 57, 62 and 67 were measured. The values of these compounds were 0.29, 0.50, 0.61, not dose-dependent and 0.33 mg/kg, respectively. (c) 2005 Elsevier Ltd. All rights reserved.