Abstract:
Triaryl rhamnose carbamate insecticides are prepared from triaryl acyl azides and tetrahydropyran-2-ols in good yield without the use of a hydride base.
Abstract:
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.
Abstract:
The invention relates to dendritic compounds, the use of these compounds as pharmaceuticals, pharmaceutical compositions containing the compounds, processes for preparing the compounds, and methods of treating diseases or conditions in which it is desirable to inhibit β-secretase.
Abstract:
The invention provides, inter alia, immunoinhibitory glycosphingolipids and immunoinhibitory alpha-galactosylceamides and compositions and preparations thereof, and methods of use thereof including in the treatment of conditions characterized by increased iNKT cells and/or activity.
Abstract:
Novel method and reagents for generating reversibly tagged saccharides, aldehydes, carboxyl acids, or orthoacetates useful in analytical and diagnostic applications are disclosed. Saccharides are coupled at the reducing end to tagging moieties comprising a reagent selected from a ortho-diaminobenzoic (DAB)-peptide, an aldo-imidazole or N-methylated aldo-imidazole, or an ortho-phenyldiamine (OPD) or substituted OPD. The tagged saccharide further comprising detectable or functional groups coupled to the tagging moiety are provided. Kits and reagents for chromatography and mass spectrometry are disclosed.
Abstract:
There is provided a novel gelator containing a sugar derivative. A gelator including a compound of Formula (1) or Formula (2): wherein each of R1 and R3 is independently a linear or branched alkyl group having a carbon atom number of 1 to 20, a cyclic C3-20 alkyl group, or a linear or branched alkenyl group having a carbon atom number of 2 to 20, n is 0 or an integer of 1 to 4, R2 is a hydrogen atom, a linear or branched alkyl group having a carbon atom number of 1 to 10, or an aryl group optionally having a substituent, and R4 and R5 are each a hydroxy group.
Abstract:
The present invention relates to an improved synthesis of a trisaccharide of the formula, novel intermediates used in the synthesis and the preparation of the intermediates.
Abstract:
The immunogenicity of vaccines is enhanced by co-administering a synthetic glycolipid, designated PBS-57, with the vaccine. PBS-57 has the ability to stimulate both a cell-mediated and humoral immune response. Co-administration of PBS-57 with a vaccine may be used in methods to stimulate one or more of a humoral immune response, a CD4+ T cell response, and a CD8+ cytotoxic T cell response.
Abstract:
Glycolipids of branched chain alkyl oligosaccharides include a primary alcohol branched in the 2-position and an oligosaccharide, covalently bond to the alcohol in either α- or β-linkage (shown in Formula I and Formula II). These compounds show phase behavior not found for the corresponding straight chain counterparts. The properties involve an ambient temperature liquid crystalline appearance and thermotropic liquid crystal phase polymorphism. The formation of cubic phases is considered most interesting with respect to life science applications, e.g. liposomes for drug delivery. Depending on the choice of sugar head group and alkyl tail, various levels of water miscibility may be adjusted to meet applications requirements (complete solubility for emulsifier applications, e.g. cosmetic creams, to limited water swelling only, e.g. for the preparation of artificial membranes). The closed structural relationship to natural lipids also makes branched chain alkyl oligosaccharides valuable subjects for biochemical investigations, e.g. membrane studies.