摘要:
A method of extracting at least one rhamnolipid compound from a rhamnolipid fermentation mixture, the method comprising the steps of: (a) admixing an inert adsorbing support with a rhamnolipid fermentation mixture; (b) dissolving the mixture in an organic solvent at a temperature higher than 31° C. and at a pressure higher than 73 bars; (c) separating at least one fatty compound; (d) adding a co-solvent to said organic solvent; (e) modifying temperature and/or pressure; (f) separating a first rhamnolipid compound; and (g) separating a second rhamnolipid compound.
摘要:
This invention relates to sphingoglycolipid analogs, compositions comprising these compounds, processes for preparing the compounds, and methods of treating or preventing diseases or conditions using the compounds, such as diseases or conditions relating to infection, atopic disorders, autoimmune disease, diabetes or cancer.
摘要:
The invention provides a compound represented by the formula (I) wherein R1 is a hydrogen atom or a hydroxyl group; two R2 are the same or different and each is a hydrogen atom or a hydroxyl group; R3 is a hydrocarbon group having 8-14 carbon atoms, which optionally has substituent(s); and R4 is a hydrocarbon group having 18-24 carbon atoms, which optionally has substituent(s), or a salt thereof. The invention also provides a method of treating an autoimmune disease or suppressing immunity by administering the aforementioned compound or a salt thereof to a patient in need thereof.
摘要:
The invention provides a compound effective as an antitumor active agent or vaccine adjuvant and an intermediate useful for the synthesis of the compound, as well as production methods thereof, and a medicament containing the novel compound. The compound is a carbamate glycolipid represented by the formula (I) wherein each symbol is as defined herein. The invention also provides a dendritic cell pulsed with the glycolipid.
摘要:
A method of preparing a compound of formula (I): wherein: a first group selected from R1, R2 and R3 is an amino- or N-acylamino monosaccharide moiety, the acyl group having 1 to 6 carbon atoms, or an oligosaccharide chain comprising 2 to 4 monosaccharide moieties, at least one of which is an amino- or N-acylamino monosaccharide moiety; a second group selected from R1, R2 and R3 is a alkanoyl and alkenoyl acyl group having 3 to 40 carbon atoms; and a third group selected from R1, R2 and R3 is hydrogen, the method comprising contacting a monoacylglycerol, the acyl moiety thereof being a saturated or unsaturated acyl group having 3 to 40 carbon atoms, or an activated derivative thereof, with a source of amino- or N-acylamino monosaccharide moiety, or an activated derivative thereof, and, if required, a source of unsubstituted monosaccharide moiety, or an activated derivative thereof, optionally in the presence of a suitable catalyst or activating agent, is described.
摘要:
Archaeal lipid adjuvants are synthesized by chemically coupling various carbohydrates or anionic polar groups to the free hydroxyl(s) of archaeal lipid cores. Chemically stable lipid cores such as saturated archaeol and caldarchaeol are obtained from appropriate Archaea. Archaeosome lipid vesicles are formulated from the synthetic lipids selected to serve as antigen carriers that target antigen-presenting cells and promote an appropriate immune response to the antigen.
摘要:
Provided herein are compositions comprising eicosapentaenoic acid (EPA) and polar lipids (e.g., glycolipids and phospholipids), and which do not contain any docosahexaenoic acid (DHA) or esterified fatty acids.
摘要:
The present invention provides a novel glyceroglycolipid produced by Mycoplasma pneumoniae. The glyceroglycolipid can be used as a diagnostic marker for a disease caused by Mycoplasma pneumoniae.
摘要:
Methods for synthesis and preparation of alpha-glycosphingolipids are provided. Methods for synthesis of α-galactosyl ceramide, and pharmaceutically active analogs and variants thereof are provided. Novel alpha-glycosphingolipids are provided, wherein the compounds are immunogenic compounds which serve as ligands for NKT (natural killer T) cells.
摘要:
The invention relates to α-galactoceramide analogs, their methods of manufacture, intermediate compounds useful in these methods. It also relates to pharmaceutical compositions containing the α-galactoceramide analogs. The methods of manufacture of the invention involve the use of unsaturated intermediate compounds which enable to synthesize α-galactoceramide analogs by a mere metathesis reaction. The α-galactoceramide analogs of the invention are useful as active ingredients of pharmaceutical compositions, particularly in pharmaceutical compositions having anti-cancerous properties.