Results 11 to 20 of about 650,908 (266)
Advances in chitooligosaccharides chemical modifications [PDF]
Biopolymers, 2021 AbstractChitooligosaccharides (COS) differ from chitosan by their molar mass: those of COS are defined to be lower than 20 kg mol−1. Their functionalization is widely described in the literature and leads to the introduction of new properties that broaden their application fields.
Chapelle, Camille +4 more
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Chemical Modification of Glycosaminoglycan Polysaccharides [PDF]
Molecules, 2021 The linear anionic class of polysaccharides, glycosaminoglycans (GAGs), are critical throughout the animal kingdom for developmental processes and the maintenance of healthy tissues. They are also of interest as a means of influencing biochemical processes.
Lais C. G. F. Palhares +6 more
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Chemical Modification of Polysaccharides [PDF]
ISRN Organic Chemistry, 2013 This review covers methods for modifying the structures of polysaccharides. The introduction of hydrophobic, acidic, basic, or other functionality into polysaccharide structures can alter the properties of materials based on these substances. The development of chemical methods to achieve this aim is an ongoing area of research that is expected to ...
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Chemical Modification of Tylosin.
The Journal of Antibiotics, 1995 20-Homo tylosin, 20-nor tylosin, 20-deoxy-19,20-didehydro tylosin (6-vinyl tylosin) and 2",3"-didehydro-3"-deoxy tylosin were prepared by multi-step procedures. 20-Homo tylosin was about twice less active than tylosin while the other compounds exhibited very weak antibacterial activity.
S, Bobillot +6 more
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One-step floating conversion of biomass into highly graphitized and continuous carbon nanotube yarns
Green Energy & Environment, 2023 The rapid growth of the demand for carbon nanotubes (CNTs) has greatly promoted their large-scale synthesis and development. However, the continuous production of CNT fibers by floating catalyst chemical vapor deposition (FCCVD) requires a large amount ...
Gongxun Zhai +7 more
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Molecules, 2022 This study optimized the laminate structure of a composite cylinder under the constraint of minimum layup thickness. Based on the progressive damage theory, a finite element model of the cylinder was established, and the NOL ring tensile test was used to
Zhiqi Li +7 more
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Nano-Micro Letters, 2022 Catalysis has been regarded as an effective strategy to mitigate sluggish reaction kinetics and serious shuttle effect of Li–S batteries. Herein, a spherical structure consists of ultrathin layered Ti3C2T x -TiN heterostructures (MX-TiN) through in-situ ...
Hao Wang +6 more
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Bioactive Materials, 2022 Sonodynamic therapy (SDT) is one of the promising strategies for tumor therapy, but its application is usually hindered by fast clearance in blood-circulation, abnormal tumor microenvironment, and inefficient generation of reactive oxygen species.
Mei Wen +7 more
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Chemical modification of validamycin A.
Agricultural and Biological Chemistry, 1980 The chemical modification of validamycin A was examined. One of the synthetic validamycin analogs, N[(1S)-(1,4,6/5)-4,5,6-trihydroxy-3-hydroxymethyl-2-cyclohexenyl] [O-β-2-amino-2- deoxy-d-glucopyranosyl-(1-> 3)-(1S)-(1,2,4/3,5) -2,3,4- trihydroxy-5-hydroxymethyl-cyclohexy] amine monohydrochloride had almost the same activity against the sheath blight ...
HASEGAWA, Akira +3 more
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Chemical Modifications of Ribosomal RNA
, 2022 AbstractCellular RNAs in all three kingdoms of life are modified with diverse chemical modifications. These chemical modifications expand the topological repertoire of RNAs, and fine-tune their functions. Ribosomal RNA in yeast contains more than 100 chemically modified residues in the functionally crucial and evolutionary conserved regions.
Sunny, Sharma, Karl-Dieter, Entian
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