摘要:
Described are various compounds and methods for the treatment of flaviviral infections. In particular, alkaloids and imino sugars in arabinose and/or lyxose stereochemical configuration with antiflaviviral activity are described.
摘要:
Described are various compounds and methods for the treatment of disorders arising from aberrant protein folding, including in particular lysosomal storage diseases. In particular, polyhydroxylated alkaloids and imino sugars which are pharmacoperones of an enzyme and which do not bind to a catalytic site of said enzyme are described.
摘要:
A method for monitoring the quality of a herbal medicine comprising the steps of: (a) providing a sample of the herbal medicine (b) extracting the sample with a polar solvent to produce a polar extract (c) subjecting the polar extract to ion-exchange chromatography to produce an extract enriched in ionic compounds (d) chromatographically fractionating the enriched extract to yield one or more polar fractions (e) characterizing the polar fractions.
摘要:
Isolated immunomodulatory (e.g. immunostimulatory) polyhydroxlated pyrrolizidine compounds having the formula are disclosed. In these compounds R is selected from hydrogen, straight or branched, unsubstituted or substituted, saturated or unsaturated acyl, alkyl (e.g. cycloalkyl), alkenyl, alkynyl and aryl groups. The compounds are useful in therapy and prophylaxis, including increasing the Th1:Th2 response ratio, hemorestoration, alleviation of immunosuppression, cytokine stimulation, treatment of proliferative disorders (e.g. cancer), vaccination, stimulation of the innate immune response and boosting of the activity of endogenous NK cells.
摘要:
A system includes a plurality of distributed refrigeration units respectively coupled to discrete refrigeration circuits. Each refrigeration unit may include a variable compressor, a fixed compressor, a condensing unit, and a controller. The controller compares an operating condition of the refrigeration unit to a refrigeration circuit set point to select a compressor staging capable of achieving the refrigeration circuit set point.
摘要:
A process comprises the steps of: providing a natural (e.g. plant) material; extracting a first sample of the material with a polar solvent to produce a polar extract and a non-polar residue; subjecting the polar extract to ion-exchange chromatography to produce an extract enriched in ionic-compounds and a non-ionic residue; and chromatographically fractionating the enriched extract to yield one or more polar fractions comprising one or more ionic (phyto)chemical(s).