| abstract |
The invention relates to .beta.(16) glucosamine disaccharides having general formula (I) to a method for preparing these disaccharides, comprising the steps of: i) providing a starting material comprising lipid A moiety of lipopolysaccharide-comprising microorganisms; and ii) subjecting the starting material to an alkaline treatment such that lipid A moiety is O-deacylated at the 3-position and at the 3'-position, to pharmaceutical compositions comprising as an active ingredient these disaccharides, and to these disaccharides for use as an immunomodulating agent, anti-tumor agent, and vaccine component. |