Durability of Cellulose Mixed-Ester Lacquers

1937 ◽  
Vol 29 (6) ◽  
pp. 690-696 ◽  
Author(s):  
W. E. Gloor
Keyword(s):  
Mixed Ester

Synthesis of Galactomannan Sulfate-Citrate

2022 ◽  
Vol 1049 ◽  
pp. 218-223
Author(s):  
Aleksandr S. Kazachenko ◽  
Yuriy N. Malyar ◽  
Anna S. Kazachenko
Keyword(s):  
Biological Activity ◽  
Ftir Spectroscopy ◽  
X Ray Diffraction ◽  
Absorption Bands ◽  
X Ray ◽  
Mixed Ester ◽  
First Time ◽  
Derivatives Of

Sulfated derivatives of polysaccharides have anticoagulant, hypolipedimic and other biological activity. In this work, a complex mixed ester of galactomannan, its sulfate-citrate, was obtained for the first time. The introduction of citrate and sulfate groups was proved by FTIR spectroscopy by the appearance of corresponding absorption bands. It was shown by X-ray diffraction that the introduction of the citrate group leads to the amorphization of the galactomannan structure.

Sodium-selective polymeric membrane electrodes based on calix(4)aryl mixed ester-type derivatives.

1994 ◽  
Vol 43 (4) ◽  
pp. 333-338 ◽  
Author(s):  
Yasuhiko SHIBUTANI ◽  
Hideo YOSHINAGA ◽  
Kenji YAKABE ◽  
Toshiyuki SHONO
Keyword(s):  
Polymeric Membrane ◽  
Membrane Electrodes ◽  
Mixed Ester

Starch Acetate-Maleate Mixed Ester Synthesis and Characterization

2005 ◽  
Vol 82 (3) ◽  
pp. 336-340 ◽  
Author(s):  
Yixiang Xu ◽  
Vesselin Miladinov ◽  
Milford A. Hanna
Keyword(s):  
Synthesis And Characterization ◽  
Ester Synthesis ◽  
Starch Acetate ◽  
Mixed Ester

Studies in Mixed Ester Condensations. IV. Acylations with Methyl Dimethoxyacetate1

1956 ◽  
Vol 78 (16) ◽  
pp. 4161-4164 ◽  
Author(s):  
E. Earl Royals ◽  
A. G. Robinson
Keyword(s):  
Mixed Ester

Indistinguishability and distinguishability between amide and ester moieties in the construction and properties of M6L8 octahedral nanocages

2015 ◽  
Vol 44 (2) ◽  
pp. 787-794 ◽  
Author(s):  
Tae Hwan Noh ◽  
Woosik Hong ◽  
Haeri Lee ◽  
Ok-Sang Jung
Keyword(s):  
Mixed Ester

A series of octahedral nanocages with ester, amide, and mixed ester/amide spacers in construction and valuable functions have been investigated.

Synthetic Hydrophilic Porphyrins. Preparations and Spectra of Alkoxycarbonylmethyl and Carboxymethyl Pyridinium Porphyrins

1989 ◽  
Vol 42 (12) ◽  
pp. 2265 ◽  
Author(s):  
DP Arnold
Keyword(s):  
Aqueous Solution ◽  
Spectroscopic Properties ◽  
High Yield ◽  
Mixed Ester ◽  
Intermolecular Association ◽  
Show Evidence

The preparation and spectroscopic properties of a quaternary pyridinium porphyrin containing ethoxycarbonylmethyl groups are described. Partial saponification of the ester groups yields a series of mixed ester/carboxylate salts which show evidence of strong intermolecular association in aqueous solution. The fully saponified tetracarboxylate inner salt was prepared in high yield and has properties which conflict with a previous report.

scholarly journals Enzyme Inhibitory Kinetics and Molecular Docking Studies of Halo-Substituted Mixed Ester/Amide-Based Derivatives as Jack Bean Urease Inhibitors

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Muhammad Rashid ◽  
Hummera Rafique ◽  
Sadia Roshan ◽  
Shazia Shamas ◽  
Zafar Iqbal ◽  
...  
Keyword(s):  
Docking Studies ◽  
Binding Energies ◽  
Urease Inhibitor ◽  
Jack Bean Urease ◽  
Substituted Anilines ◽  
Jack Bean ◽  
Chemical Structures ◽  
Mixed Ester ◽  
Urease Enzyme ◽  
Better Than

A series of halo-substituted mixed ester/amide-based analogues 4a-l have been prepared as jack bean urease inhibitor, which showed good to excellent inhibition of enzyme activity. The role of halo-substituted benzoyl moieties and alkyl substituted anilines in urease inhibitory kinetics was also investigated. The alkyl-substituted anilines 1a–b reacted with chloroacetyl chloride to afford intermediates 2a-b, which were then reacted with different halo-substituted benzoic acids 3a–f to prepare the title compounds 4a-l. The chemical structures of final products 4a-l were ascertained by FTIR, 1H NMR, 13C NMR, and mass spectra. The compound 4b showed remarkable activity with IC50 1.6 ± 0.2  nM, better than the standard thiourea having IC50 472.1 ± 135.1  nM. The 2-chloro-substituted phenyl ring on one side of compound 4b and 4-isopropyl-substituted benzene on the other side play an essential role in inhibition of urease activity. Lineweaver–Burk plots (kinetics study) indicated about 4b derivative as a mixed type of inhibitor. The virtual screening performed against urease enzyme (PDBID 4H9M) showed that compounds 4b and 4e have binding energies of −7.8 and −7.9 Kcal/mol, respectively. Based upon our results, it was found that derivative 4b is a highly potent urease inhibitor, better than the standard thiourea.

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