Carbocyclic analogues of lipid X and nor-lipid X (1 and 2) are synthesized respectively from amino-inososes 3 and 16a, readily prepared from exocyclic olefins by Ferrier rearrangement
Paulsen, Hans; Krogmann, Christof, Liebigs Annalen der Chemie, 1989, p. 1203 - 1214
作者:Paulsen, Hans、Krogmann, Christof
DOI:——
日期:——
Acyclic analogs of lipid A: synthesis and biological activities.
作者:Murty A. R. C. Bulusu、Peter Waldstaetten、Johannes Hildebrandt、Eberhard Schuetze、Gerhard Schulz
DOI:10.1021/jm00097a003
日期:1992.9
The synthesis of a series of novel acyclic analogues of lipid A, the lipophilic terminal of lipopolysaccharide (LPS), is reported. In these compounds, the reducing glucose unit of lipid A has been replaced by an acyclic analogue unit (abbreviated as AAU) consisting of a spacer (of varying length), an (R)-3-hydroxytetradecanamido moiety (of varying configuration at the carbon of attachment), and a CO2H group. The AAU has been attached to the anomeric carbon of the nonreducing glucose unit of lipid A, either through glycosidic linkage or through an acyl linkage. Further, amide isosteres of these acyclic analogues have been prepared using suitably protected 2,3-diamino-2,3-dideoxyglucose instead of 2-amino-2-deoxyglucose. All the compounds were well characterized and were tested for their ability to induce TNF-alpha in mouse bone marrow-derived macrophages, to enhance nonspecific resistance to infection in mice and to induce endotoxic shock in mice. The results showed a dramatic dependence, for the first time, on the length of the spacer and on the configuration of the carbon bearing the amido group in the AAU part of the analogues.
Synthesis of diamino acids - potential lipopolysaccharide antagonists
作者:Murty A.R.C. Bulusu、Peter Waldstätten
DOI:10.1016/s0040-4039(00)74161-x
日期:1992.3
1,4,6-Tri-O-acetyl-2,3-bis(tert-butyloxycarbonamido)-2,3-dideoxy-alpha-D-glucopyranose (8) was prepared through catalytic reduction and in situ tert-butyloxycorbonylation of 1,4,6-tri-O-acetyl-2-azido-2,3-dideoxy-3-nitro-alpha-D-glucopyra?? nose (5). Starting from 8, 4S,5S-bis(3R-hydroxytetradecanamido)octan-1,8-dioic acid (4) was synthesised in a series of steps.
PAULSEN, HANS;KROGMANN, CHRISTOF, LIEBIGS ANN. CHEM.,(1989) N2, C. 1203-1213