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Showing 1 to 8 of 8 for “"Furanose"”.
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Molecular studies of organometallic carbohydrates and related compounds.
… were studied (three pyranose and two furanose compounds). l,2;3,4-di-O-isopropylidene-6-O-triphenylstannylmethyl-alpha-D-galactopyranose shows the tin in a distorted tetrahedral environment and the pyranose ring in a twist-boat conformation. Only slight changes in conformation between …
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Methods for the Study of Galactofuranose in Mycobacteria
… the energy costs associated with deploying furanose sugars over their more stable pyranose counterparts, galactofuranose is prevalent across nature from commensals to human pathogens. However, it is conspicuously absent from human cells, thus establishing its biosynthetic pathways as …
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Development of an alternative synthesis of 2-acetamido-2-deoxy-L-altruronic acid: an unusual sugar found in the O-specific polysaccharide of Shigella sonnei
… -2-acetamido-O-acetyl-2-deoxy-3-O-benzyl-α-D-glucofuranose, was isolated. While this was also a potentially useful intermediate, having only the 5-OH unprotected, it proved not possible to find conditions for optimizing this product. Inversion of configuration at C-5 in the 6-O-silylated …
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Synthesis of Non-Natural Cyclic Di-Nucleotides for the Investigation of Bacterial Signaling Pathways
… or deletions at the 2'-position on the ribofuranose ring. However, these analogs have not been water soluble, limiting them to in vitro investigations only. We propose that by replacing the phosphate linkage entirely we can increase water solubility and have pursued a divergent total …
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Defining D-Arabinose Metabolism in <i>Leishmania major</i> and <i>Crithidia fasciculata</i>
… Arabinose exists naturally in both pyranose and furanose conformations and D- and L- configurations. The most abundant form of arabinose is L-arabinose which is present in the arabinogalactans of plants. D-arabinofuranose (D-Araf) is found mainly in the arabinomannans, arabinogalactans, …
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Applications of supercritical fluid technologies to the analysis of food components
… if the structure contained a pyranose or furanose ring. Changes in chemical composition of vegetable oils due to processing were observed employing SFC/FT-IR. Refined soybean oil and soybean oil that was hydrogenated with a NI or a Ni-S catalyst were analyzed. SFC/FT-IR provided an …
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Developing methods to construct ring pucker free energy hypersurfaces applied to the analysis of glycosidase enzyme catalytic mechanisms
… usually various 5- and 6-membered cycles (furanoses and pyranoses) which can twist, bend or flip into a variety of conformers that differ in strain - this is ring puckering. These puckers notably the strained puckering conformers are observed during enzymatically assisted bond formation or …