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Showing 1 to 13 of 13 for “"Amino sugars"”.
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I. The Microbiological Incorporation of Labeled Intermediates Into The Neomycin Antibiotics. Ii. Mass Spectral Studies of N-Acetyl Derivatives of Amino Sugars and Related Compounds
Made available in DSpace on 2014-12-09T17:35:30Z (GMT). No. of bitstreams: 1 6607808.pdf: 7514068 bytes, checksum: c98beedc0ddfdad401dd8a05410d2b4b (MD5) Previous issue date: 1966
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Synthesis of Deoxysugars through Manganese-promoted Redox Isomerization
Deoxysugars feature prominently in many bioactive natural products and pharmaceutical compounds. Many synthetic routes towards deoxysugars rely on protecting groups to achieve selective outcomes. Here we report a concise synthetic strategy to access a diverse set of 2- and 4-deoxysugars using a …
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Sources and Biochemical Composition of Detrital Organic Matter In theSea
… for organic carbon, organic nitrogen, D- and L-amino acids, neutral sugars and amino sugars. A high-throughput microwave-assisted vapor-phase hydrolysis method was developed to measure D- and L-amino acids in seawater samples. Bacterial detritus was a major component of particulate organic …
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Investigation of copper(II) complexes: I Copper(II) complexes of tryptophan and its analogues as postcolumn interaction components for indirect fluorescence detection of amino-containing analytes II High-performance liquid chromatographic separation of copper(II) azamacrocyclic complexes
… HPLC detection for detecting specific mono-amino sugars, glucosamine, galactosamine, and mannosamine. Two tryptophan analogues, 5-hydroxy-L-tryptophan and DL-5-methoxytryptophan were evaluated as potential alternatives to L-tryptophan for the detection of these mono-amino sugars. This …
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The use of aminoglycoside antibiotic therapy in neutropaenic patients with haematological disease
The use of aminoglycosides in the treatment of the febrile neutropaenic patient with haematological disease is difficult and often suboptimal. This study reviews the available literature to establish therapeutic guidelines in this population and then reports the use of a Bayesian statistics based …
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The synthesis of methyl-2-acetamido-3,4,6-0-triacetyl alpha-D-talosaminide
<p>Amongst the very many different kinds of amino sugars, theones that have aroused the most interest are the 2-amino 2-deoxy hexoses which are found in such well known antibiotics as streptomycin and neomycine (2). There are so far about forty-three antibiotics which are known to contain different …
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Mode of Action of Abscisic Acid in Barley Aleurone Layers: Induction of Proteins by Abscisic Acid
… against a barley lectin specific for free amino sugars. The most abundant induced protein, p29, can be greatly enriched by a combination of low pH, low concentrations of isopropanol, high temperature, and reducing conditions. Phaseic acis (PA), the first stable metabolite of ABA, is …
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Derivatives of benzyl n-benzoyl-a-d-glucosaminide
… the past few decades, interest in the field of aminosugar chemistry has been stimulated to a remarkable degree and the discovery and syntheses of a wide range of new aminosugars of differing types, for example of two monoamino-tetroses (12,19), nineteen monoamino-pentoses, two diamino-pentoses, …
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Buried Surface Horizons in Saskatchewan Croplands Provide Insight into Microbial Soil Carbon Cycling and Development of Persistent Organic Matter
… and concentrations of microbial necromass (amino sugars) remained in the Ahb vs. Ah horizon but were strongly correlated with clay only in the Ahb horizons (Rho = 0.77, p < 0.001). Further, microbial communities in Ahb horizons were more thermodynamically efficient at utilizing added glucose …
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High molecular weight (HMW) dissolved organic matter (DOM) in seawater : chemical structure, sources and cycling
… galactose; and additionally contains Nacetylated amino sugars as seen by Nuclear Magnetic Resonance Spectroscopy (NMR). This family of compounds, consisting of a specifically linked polysaccharide backbone that is acylated at several positions, has been termed acylated polysaccharides (APS) by our …
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High molecular weight (HMW) dissolved organic matter (DOM) in seawater : chemical structure, dources and cycling
… galactose; and additionally contains Nacetylated amino sugars as seen by Nuclear Magnetic Resonance Spectroscopy (NMR). This family of compounds, consisting of a specifically linked polysaccharide backbone that is acylated at several positions, has been termed acylated polysaccharides (APS) by our …
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Catalytic C-H oxidation reactions for the synthesis and diversification of hydroxyamino acid motifs
Hydroxyamino acid motifs are well-represented structures in natural products and pharmaceuticals, and are widely employed as synthetic building blocks in organic synthesis. In nature, such compounds are often synthesized via enzymatic C-H oxidation of simple amino acid precursors. Inspired by such …
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Metabolic Pathways of Amino Acids, Monosaccharides and Organic Acids in Soils assessed by Position-Specific Labeling
… the three main LMWOS classes were applied: two amino acids (alanine and glutamate), two monosaccharides (glucose and ribose) and two organic acids (acetate and palmitate). C-13 remaining in soil and that incorporated into microbial biomass and specific microbial cellular compounds (phospholipid …