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You searched for: Publication year rev 7981-2019 Remove constraint Publication year rev: 7981-2019 Subject term acylation Remove constraint Subject term: acylation
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1. A Unified Synthetic Approach to Optically Pure Curvularin-Type Metabolites

Author:
Srinivasa Rao Allu; Sreenivas Banne; Jia Jiang; Na Qi; Jian Guo; Yun He
Source:
Journal of organic chemistry 2019 v.84 no.11 pp. 7227-7237
ISSN:
1520-6904
Subject:
acylation; chemical structure; esterification; metabolites; organic chemistry; organic compounds
Abstract:
... A unified and concise approach to the synthesis of nine curvularin-type metabolites and two analogues has been developed with few steps and high yields. Among them, sumalactones A–D were synthesized for the first time. The key steps in this approach included esterification, Friedel–Crafts acylation, and ring-closing metathesis (or cross metathesis). ...
DOI:
10.1021/acs.joc.9b00776

2. Acylation of Alkenes with the Aid of AlCl₃ and 2,6-Dibromopyridine

Author:
Shinya Tanaka; Tsukasa Kunisawa; Yuji Yoshii; Tetsutaro Hattori
Source:
Organic letters 2019 v.21 no.21 pp. 8509-8513
ISSN:
1523-7052
Subject:
acylation; alkenes; aluminum chloride; chemical structure; hydrogen; organochlorine compounds; pyridines
Abstract:
... Friedel–Crafts-type acylation of alkenes with acyl chlorides has been successfully conducted with a wide substrate scope by the combined use of AlCl₃ and 2,6-dibromopyridine. Trisubstituted alkenes afford allylketones or vinylketones depending on the presence or absence of hydrogen atom(s) at the β-position to the acylation site, while monosubstituted alkenes exclusively afford vinylketones. ...
DOI:
10.1021/acs.orglett.9b02688

3. Acylsugar diversity in the resin glycosides from Ipomoea tricolor seeds as chemosensitizers in breast cancer cells

Author:
Jhon Castañeda-Gómez; Pedro Lavias-Hernández; Mabel Fragoso-Serrano; Argelia Lorence; Rogelio Pereda-Miranda
Source:
Phytochemistry letters 2019 v.32 pp. 77-82
ISSN:
1874-3900
Subject:
Ipomoea tricolor; acylation; breast neoplasms; esterification; glycosides; high performance liquid chromatography; humans; ions; mass spectrometry; moieties; multiple drug resistance; neoplasm cells; nuclear magnetic resonance spectroscopy; ornamental plants; seeds; sodium; sugars; vinblastine
Abstract:
... Mexican morning glory, Ipomoea tricolor Cav., is native to America and widely cultivated as an ornamental plant. High performance liquid chromatography profiling coupled with off-line electrospray mass spectrometry detection was applied to identify novel acylsugar from the CHCl3-soluble resin glycoside from seeds. Dereplication of known tricolorins A-J included the recording of mass values for ion ...
DOI:
10.1016/j.phytol.2019.05.004

4. An Aliphatic Bischler–Napieralski Reaction: Dihydropyridones by Cyclocarbonylation of 3-Allylimidazolidin-4-ones

Author:
Mostafa M. Amer; Olatz Olaizola; Jennifer Carter; Hossay Abas; Jonathan Clayden
Source:
Organic letters 2019 v.22 no.1 pp. 253-256
ISSN:
1523-7052
Subject:
acylation; alanine; enantiomers; hydrolysis; moieties; organochlorine compounds; pipecolic acid; potassium iodide
Abstract:
... The N-chloroformylimidazolidinone derivative of enantiopure l-alanine was deprotonated to form an enolate and functionalized with a series of allylic halides. Treatment of the resulting carbamoyl chlorides with potassium iodide led to cyclization of the allylic substituent onto the carbonyl group in an intramolecular aliphatic Friedel–Crafts-type acylation that corresponds to an aliphatic Bischler ...
DOI:
10.1021/acs.orglett.9b04250

5. Antioxidant capacity and hepatoprotective activity of myristic acid acylated derivative of phloridzin

Author:
Chunli Liu; Chunlong Yuan; Hosahalli S. Ramaswamy; Yamei Ren; Xiaolin Ren
Source:
Heliyon 2019 v.5 no.5 pp. e01761
ISSN:
2405-8440
Subject:
2,2-diphenyl-1-picrylhydrazyl; acylation; antioxidant activity; antioxidants; blood serum; carbon tetrachloride; glutathione; hepatoprotective effect; hepatotoxicity; interleukin-6; liver; liver diseases; liver regeneration; malondialdehyde; moieties; myristic acid; phloridzin
Abstract:
... The antioxidant activities in vitro and hepatoprotective effects against carbon tetrachloride (CCl₄) induced acute liver injury in vivo of myristic acid acylated derivative of phloridzin (PZM) were investigated. The PZM was obtained by enzymatic acylation of myristic acid and phloridzin (PZ). The antioxidant capability of PZM in vitro was evaluated by the ferric reducing antioxidant power assay (F ...
DOI:
10.1016/j.heliyon.2019.e01761
PubMed:
31193831
PubMed Central:
PMC6543077

6. Atropselective Synthesis of N,C-Bis(diphenylphosphanes) from Bridged 2-Arylindoles Based on Effective Point-to-Axial Asymmetric Inductions after an Unusual Dilithiation⊥

Author:
Felix Bäuerle; Reinhard Brückner
Source:
Organic letters 2019 v.21 no.24 pp. 9970-9975
ISSN:
1523-7052
Subject:
acylation; anhydrides; carboxylic acids; diastereomers; indoles; lactones; methanolysis; stereospecificity
Abstract:
... An asymmetric methanolysis of glutaric anhydride and 6 ensuing steps gave veratrol-annulated dimethylcyclo-heptenone diastereomers with 99% ee; ring closures occurred by Friedel–Crafts acylations of carboxylic acids obtained by stereospecific hydrogenolyses of a pair of diastereomeric δ-lactones. The mentioned cycloheptenones and Ph−NH−NH₂ underwent Fischer indole syntheses providing the tetracycl ...
DOI:
10.1021/acs.orglett.9b03896

7. Avermectin loaded nanosphere prepared from acylated alkali lignin showed anti-photolysis property and controlled release performance

Author:
Mingsong Zhou; Dongping Wang; Dongjie Yang; Xueqing Qiu; Yingxin Li
Source:
Industrial crops and products 2019 v.137 pp. 453-459
ISSN:
0926-6690
Subject:
acylation; avermectins; encapsulation; hydrophobicity; lignin; nanospheres; organochlorine compounds; pesticides; photosensitivity; ultraviolet radiation
Abstract:
... Acetylated lignin (ACAL) and benzoylated lignin (BZAL) were obtained from the chemical modification of alkali lignin with acetyl chloride and benzoyl chloride, respectively. The results showed that the introduction of alkyl chain can increase the hydrophobicity of AL evidently. The ACAL and BZAL were used as shell materials for the preparation of nanospheres to encapsulate photosensitive pesticide ...
DOI:
10.1016/j.indcrop.2019.04.037

8. Base-Mediated One-pot Synthesis of Oxygen-Based Heterocycles from 2-Hydroxyphenyl-Substituted para-Quinone Methides

Author:
Gurdeep Singh; Suresh Kumar; Arjun Chowdhury; Ramasamy Vijaya Anand
Source:
Journal of organic chemistry 2019 v.84 no.24 pp. 15978-15989
ISSN:
1520-6904
Subject:
acylation; alkylation; chemical structure; coumarin; furans; organic chemistry; oxidation; quinones; synthesis
Abstract:
... One-pot synthesis of oxygen-containing heterocycles has been achieved through alkylation/acylation of 2-hydroxyphenyl-substituted para-quinone methides followed by an intramolecular 1,6-conjugate addition/cyclization and oxidation sequence. This protocol provides access to a wide range of oxygen-based heterocycles, such as 2,3-disubstituted benzo[b]furans, 2,3-dihydrobenzofurans and diaryl-substit ...
DOI:
10.1021/acs.joc.9b02455

9. Binary mixtures of ionic liquids-DMSO as solvents for the dissolution and derivatization of cellulose: Effects of alkyl and alkoxy side chains

Author:
Daniela C. Ferreira; Mayara L. Oliveira; Thais A. Bioni; Haq Nawaz; Alistair W.T. King; Ilkka Kilpeläinen; Michael Hummel; Herbert Sixta; Omar A. El Seoud
Source:
Carbohydrate polymers 2019 v.212 pp. 206-214
ISSN:
0144-8617
Subject:
acetates; acylation; biopolymers; cellobiose; cellulose; derivatization; dimethyl sulfoxide; hydrogen bonding; imidazoles; ionic liquids; nuclear magnetic resonance spectroscopy; oxygen; rheology
Abstract:
... The efficiency of mixtures of ionic liquids (ILs) and molecular solvents in cellulose dissolution and derivatization depends on the structures of both components. We investigated the ILs 1-(1-butyl)-3-methylimidazolium acetate (C4MeImAc) and 1-(2-methoxyethyl)-3-methylimidazolium acetate (C3OMeImAc) and their solutions in dimethyl sulfoxide, DMSO, to assess the effect of presence of an ether linka ...
DOI:
10.1016/j.carbpol.2019.02.024

10. Bioactive compounds from the seeds of Amomum tsaoko Crevost et Lemaire, a Chinese spice as inhibitors of sphingosine kinases, SPHK1/2

Author:
Seulah Lee; Joo Chan Lee; Lalita Subedi; Kyo Hee Cho; Sun Yeou Kim; Hyun-Ju Park; Ki Hyun Kim
Source:
RSC advances 2019 v.9 no.58 pp. 33957-33968
ISSN:
2046-2069
Subject:
Amomum tsao-ko; Oriental traditional medicine; acylation; bioactive compounds; bioactive properties; enantioselectivity; enzyme activity; ethanol; fatty acids; models; nuclear magnetic resonance spectroscopy; phenolic compounds; phosphotransferases (kinases); seeds; spectral analysis; sphingosine; spices; terpenoids
Abstract:
... Amomum tsaoko Crevost et Lemaire (Zingiberaceae), a traditional Chinese spice also known as “Caoguo” or “tsao-ko,” has been considered to have many health benefits. As part of our continuous efforts to screen natural resources exhibiting potential bioactivity, we examined the seeds of A. tsaoko and found that its EtOH extract inhibited sphingosine kinases 1 and 2 (SPHK1/2). Bioactivity-based analy ...
DOI:
10.1039/c9ra07988b

11. Biocatalytic Synthesis of Lipophilic Baicalin Derivatives as Antimicrobial Agents

Author:
Xuan Xin; Mengmeng Zhang; Xiao-Feng Li; Guanglei Zhao
Source:
Journal of agricultural and food chemistry 2019 v.67 no.42 pp. 11684-11693
ISSN:
1520-5118
Subject:
acylation; anti-infective agents; antimicrobial properties; baicalin; catalytic activity; esterification; fatty acids; fatty alcohols; glycosides; lipophilicity; moieties
Abstract:
... Enzymatic acylation is commonly used to increase the lipophilicity of flavonoids. However, the absence of primary hydroxyl groups makes it challenging to acylate baicalin using traditional acylation methods. In this study, an enzymatic esterification strategy was developed to introduce fatty-acid chains into baicalin at its carboxyl group, hence successfully synthesizing a new series of baicalin e ...
DOI:
10.1021/acs.jafc.9b04667

12. Biodegradation mechanism of polyesters by hydrolase from Rhodopseudomonas palustris: An in silico approach

Author:
Xiaodan Wang; Jinfeng Chen; Xiaowen Tang; Junjie Wang; Ledong Zhu; Weixin Zhang; Hui Wang; Yanwei Li; Qingzhu Zhang
Source:
Chemosphere 2019 v.231 pp. 126-133
ISSN:
0045-6535
Subject:
Rhodopseudomonas palustris; acetates; active sites; acylation; amino acids; biodegradation; catalytic activity; formates; hydrolases; hydrolysis; molecular dynamics; mutation; physicochemical properties; plastics; polyesters; polylactic acid; quantum mechanics; simulation models; surface area
Abstract:
... Massively used plastics have caused worldwide environmental concerns. Polyesters like polylactic acid (PLA) are one of the mostly used plastics due to its excellent physical and chemical properties and low-cost advantages. It is critical to develop the elimination and recycle techniques for polyesters. Experimental studies have shown that a hydrolase RPA1511 isolated from Rhodopseudomonas palustri ...
DOI:
10.1016/j.chemosphere.2019.05.112

13. Boron trifluoride etherate promoted microwave-assisted synthesis of antimalarial acridones

Author:
Papireddy Kancharla; Rozalia A. Dodean; Yuexin Li; Jane X. Kelly
Source:
RSC advances 2019 v.9 no.72 pp. 42284-42293
ISSN:
2046-2069
Subject:
acylation; antimalarials; boron; microwave treatment; multiple drug resistance; parasites
Abstract:
... A microwave-assisted, rapid and efficient method using boron trifluoride etherate (BF₃.Et₂O) for the synthesis of acridones, via an intramolecular acylation of N-phenylanthranilic acid derivatives, has been developed. The reaction proceeds under solvent-free conditions, tolerates a wide range of functional groups, and provides rapid access to a range of acridones in good to excellent yields. Sever ...
DOI:
10.1039/c9ra09478d

14. Both the mono- and di-anions of ellagic acid are effective inhibitors of the serine β-lactamase CTX-M-15

Author:
Nathan Talbot; Nicholas T. Powles; Michael I. Page
Source:
RSC advances 2019 v.9 no.53 pp. 30637-30640
ISSN:
2046-2069
Subject:
active sites; acylation; anions; beta-lactamase; ellagic acid; enzyme inhibitors; lactones; serine
Abstract:
... Ellagic acid, a δ-lactone with ionisable phenolic residues, is an efficient time-dependent inhibitor of the serine β-lactamase enzyme CTX-M-15. The pH-dependence of the rate of inhibition shows that both the mono- and di-anionic species of ellagic acid are effective inhibitors, both with second order rate constants of ∼1.5 × 10⁴ M⁻¹ s⁻¹. The structurally similar δ-lactone urolithin A, which lacks ...
DOI:
10.1039/c9ra05835d

15. Carrot anthocyanins: nutrition, diversity and genetics

Author:
P. F. Cavagnaro; F. Bannoud; M. lorizzo; D. Senalik; S. L. Ellison; P. W. Simon
Source:
Acta horticulturae 2019 v. no.1264 pp. 101-106
ISSN:
0567-7572
Subject:
acylation; anthocyanins; anti-inflammatory activity; antioxidants; biosynthesis; breeding programs; carrots; chemical structure; dietary supplements; food colorants; germplasm; glycosylation; health promotion; new variety; phytonutrients; pigmentation; plant breeding; tissues; water solubility
Abstract:
... Purple carrots represent an excellent dietary source of anthocyanins. The consumption of these water-soluble flavonoid pigments is associated with various health benefits, attributed mainly to their antioxidant and anti-inflammatory properties. Anthocyanin pigmentation varies broadly among organs and tissues of the carrot plant and among carrot genetic stocks. The chemical structure of anthocyanin ...
DOI:
10.17660/ActaHortic.2019.1264.11

16. Catalytic Activation of Cis-Vicinal Diols by Boronic Acids: Site-Selective Acylation of Carbohydrates

Author:
Naoyuki Shimada; Yuki Nakamura; Takayuki Ochiai; Kazuishi Makino
Source:
Organic letters 2019 v.21 no.10 pp. 3789-3794
ISSN:
1523-7052
Subject:
Lewis bases; acylation; boronic acids; carbohydrates; catalysts; catalytic activity; glycols; moieties
Abstract:
... Site-selective acylation of unprotected carbohydrates by using stable, storable, and easily handled imidazole-containing organoboronic acid catalysts is described. This catalytic process with low catalyst loading enables the introduction of a wide variety of acyl functional groups into the equatorial position of cis-vicinal diols in unprotected hexapyranosides with excellent site selectivity. This ...
DOI:
10.1021/acs.orglett.9b01231

17. Chemoenzymatic Synthesis of a Chiral Ozanimod Key Intermediate Starting from Naphthalene as Cheap Petrochemical Feedstock

Author:
Florian Uthoff; Jana Löwe; Christina Harms; Kai Donsbach; Harald Gröger
Source:
Journal of organic chemistry 2019 v.84 no.8 pp. 4856-4866
ISSN:
1520-6904
Subject:
active pharmaceutical ingredients; acylation; amination; carboxylic ester hydrolases; chemical bonding; chemical reduction; chemical structure; drugs; feedstocks; manufacturing; naphthalene; optical isomerism; organic chemistry; sclerosis
Abstract:
... Ozanimod represents a recently developed, promising active pharmaceutical ingredient (API) molecule in combating multiple sclerosis. Addressing the goal of a scalable, economically attractive, and technically feasible process for the manufacture of this drug, a novel alternative synthetic approach toward (S)-4-cyano-1-aminoindane as a chiral key intermediate for ozanimod has been developed. The to ...
DOI:
10.1021/acs.joc.8b03290

18. Chemoenzymatic synthesis of hydroxytyrosol monoesters and their suppression effect on nitric oxide production stimulated by lipopolysaccharides

Author:
Ayaka Sakakura; Martin Pauze; Atsuhiro Namiki; Megumi Funakoshi-Tago; Hiroomi Tamura; Kengo Hanaya; Shuhei Higashibayashi; Takeshi Sugai
Source:
Bioscience, biotechnology, and biochemistry 2019 v.83 no.2 pp. 185-191
ISSN:
1347-6947
Subject:
Pseudozyma antarctica; acylation; biotechnology; butyrates; carboxylic ester hydrolases; chemoselectivity; fatty acids; hydroxylation; lipopolysaccharides; nitric oxide
Abstract:
... Fatty acid monoesters of hydroxytyrosol [2-(3,4-dihydroxyphenyl)ethanol] were synthesized in two steps from tyrosol (4-hydroxyphenylethanol) by successive Candida antarctica lipase B-catalyzed chemoselective acylation on the primary aliphatic hydroxy group over phenolic hydroxy group in tyrosol, and 2-iodoxybenzoic acid (IBX)-mediated hydroxylation adjacent to the remaining free phenolic hydroxy g ...
DOI:
10.1080/09168451.2018.1530970

19. Chemoproteomics Using Nucleotide Acyl Phosphates Reveals an ATP Binding Site at the Dimer Interface of Procaspase-6

Author:
Eric S. Okerberg; Kevin B. Dagbay; Jennifer L. Green; Ishankumar Soni; Arwin Aban; Tyzoon K. Nomanbhoy; Sergey N. Savinov; Jeanne A. Hardy; John W. Kozarich
Source:
Biochemistry 2019 v.58 no.52 pp. 5320-5328
ISSN:
1520-4995
Subject:
acylation; adenine; binding sites; caspase-6; in vitro studies; ligands; moieties; mutation; nucleotides; phosphates; proteins; proteolysis
Abstract:
... Acyl phosphates of ATP (ATPAc) and related nucleotides have proven to be useful for the interrogation of known nucleotide binding sites via specific acylation of conserved lysines (K). In addition, occasional K acylations are identified in proteins without such known sites. Here we present a robust and specific acylation of procaspase-6 by ATPAc at K133 in Jurkat cell lysates. The K133 acylation i ...
DOI:
10.1021/acs.biochem.9b00290
PubMed:
31095371
PubMed Central:
PMC6874883

20. Continuous Flow Synthesis of Isoxazoles via Vinyl Azides from Friedel–Crafts Acylation of Alkynes: A Modulated Troubleshooting Optimization Approach

Author:
Hyungmo Koo; Hun Young Kim; Kyungsoo Oh
Source:
Organic letters 2019 v.21 no.24 pp. 10063-10068
ISSN:
1523-7052
Subject:
acylation; alkynes; azides; chemical structure; ketones
Abstract:
... The synthesis of isoxazoles has been achieved in a continuous flow system composed of two reaction units: the Friedel–Crafts acylation of alkynes and the azide conjugate addition to the resulting β-chlorovinyl ketones followed by a photochemical–thermal reaction sequence. The salient feature of the current flow system includes the safe handling of potentially explosive organic azide species as wel ...
DOI:
10.1021/acs.orglett.9b04010

21. Continuous enantiomer‐selective acylation reaction of 1‐phenylethanamine in a magnetic fluidized bed reactor system (MFBRS)

Author:
Zhimin Ou; Jiaying Pan; Lan Tang; Hanbing Shi
Source:
Journal of chemical technology and biotechnology 2019 v.94 no.6 pp. 1951-1957
ISSN:
0268-2575
Subject:
acylation; catalysts; fluidized beds; immobilized enzymes; kinetics; magnetic fields; mixers; nanoparticles; triacylglycerol lipase
Abstract:
... BACKGROUND: Magnetic nanoparticle immobilized enzymes are attractive owing to their potential applications in many biological fields. When an alternating magnetic field is applied, the magnetic moments of the magnetic nanoparticles are apt to align in the direction of the field, and the magnetic nanoparticles experience force in the direction of the field. Thus, the magnetic nanoparticles behave l ...
DOI:
10.1002/jctb.5978

22. Convergent synthesis of diptoindonesin G

Author:
Dileep Kumar Singh; Ikyon Kim
Source:
Tetrahedron letters 2019 v.60 no.3 pp. 300-301
ISSN:
0040-4039
Subject:
Suzuki reaction; acylation; chemical structure; organic compounds
Abstract:
... A convergent and scalable synthetic route to a tetracyclic oligostilbenoid natural product, diptoindonesin G, is described where Suzuki-Miyaura cross-coupling and intramolecular Friedel-Crafts acylation were employed to construct the central C ring of diptoindonesin G. Two fragments for cross-coupling reaction were readily synthesized with similar efficiency. ...
DOI:
10.1016/j.tetlet.2018.12.036

23. Cyanobacterial peptides as a tour de force in the chemical space of antiparasitic agents

Author:
Luis Rivas; Verónica Rojas
Source:
Archives of biochemistry and biophysics 2019 v.664 pp. 24-39
ISSN:
0003-9861
Subject:
acylation; amino acid sequences; amino acids; antimicrobial peptides; antiparasitic agents; biosynthesis; cell membranes; eukaryotic cells; heterocyclic compounds; innate immunity; invertebrates; lipids; parasites; pathogens; permeability; post-translational modification; vertebrates
Abstract:
... Parasites are scarcely addressed target for antimicrobial peptides despite their big impact in health and global economy. The notion of antimicrobial peptides is frequently associated to the innate immune defense of vertebrates and invertebrate vectors, as the ultimate recipients of the parasite infection. These antiparasite peptides are produced by ribosomal synthesis, with few post-translational ...
DOI:
10.1016/j.abb.2019.01.030

24. Decanoic acid functionalized chitosan: Synthesis, characterization, and evaluation as potential wound dressing material

Author:
Qifeng Dang; Qianqian Zhang; Chengsheng Liu; Jingquan Yan; Guozhu Chang; Ying Xin; Xiaoyu Cheng; Yachan Cao; Hong Gao; Yan Liu
Source:
International journal of biological macromolecules 2019 v.139 pp. 1046-1053
ISSN:
0141-8130
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; acylation; biocompatibility; cell viability; chitosan; crystal structure; decanoic acid; hemolysis; models; moieties; nuclear magnetic resonance spectroscopy; tissue repair; titration; toxicity testing; water solubility
Abstract:
... Skin wound dressing materials, which can accelerate wound healing and have the synthetic advantages of simplicity, environmental safety, and resource abundance, are becoming a hot topic of research now. Following such a research trend, we prepared novel decanoic acid functionalized chitosan (CSDA) with good solubility by acylation via a facile one-step method. FTIR, ¹H NMR, and UV–Vis results demo ...
DOI:
10.1016/j.ijbiomac.2019.08.083

25. Degradable cellulose‐based polymer brushes with controlled grafting densities

Author:
Mateusz Olszewski; Lingchun Li; Guojun Xie; Andrew Keith; Sergei S. Sheiko; Krzysztof Matyjaszewski
Source:
Journal of polymer science 2019 v.57 no.24 pp. 2426-2435
ISSN:
0887-624X
Subject:
acylation; cellulose; cellulose acetate; esterification; glucose; lithium chloride; organobromine compounds; polymers; solvents
Abstract:
... Cellulose‐based polymer brushes with variable grafting densities and low dispersity were synthesized by grafting poly(n‐butyl acrylate) (PBA) side chains from cellulose‐derived backbones via ATRP. Esterification of commercially available cellulose acetate with 2‐bromoisobutyryl bromide (2‐BiBB) in NMP provided cellulose‐based macroinitiators averaging one initiation site per double glucose unit. A ...
DOI:
10.1002/pola.29481

26. Detection of Phenylketonuria Markers Using a ZIF-67 Encapsulated PtPd Alloy Nanoparticle (PtPd@ZIF-67)-Based Disposable Electrochemical Microsensor

Author:
Xinyue Xu; Dongqing Ji; Yuan Zhang; Xinghua Gao; Pengcheng Xu; Xinxin Li; Chung-Chiun Liu; Weijia Wen
Source:
ACS applied materials & interfaces 2019 v.11 no.23 pp. 20734-20742
ISSN:
1944-8252
Subject:
Fourier transform infrared spectroscopy; acylation; alloy nanoparticles; amino acid derivatives; amino acid metabolism; behavior disorders; behavior problems; congenital abnormalities; crystals; electrochemistry; electron transfer; encapsulation; imidazole; metabolites; nanocomposites; phenylacetic acid; phenylketonuria; phenylpyruvic acid; point-of-care systems; screening; seizures
Abstract:
... Phenylketonuria (PKU) is a common disease in congenital disorder of amino acid metabolism, which can lead to intellectual disability, seizures, behavioral problems, and mental disorders. We report herein a facile method to screen for PKU by the measurements of its metabolites (markers). In this work, a disposable electrochemical microsensor modified with a ZIF (zeolitic imidazolate framework)-base ...
DOI:
10.1021/acsami.9b05431

27. Differential occurrence of lysine 2-hydroxyisobutyrylation in psoriasis skin lesions

Author:
Huiyao Ge; Bao Li; Weiwei Chen; Qiongqiong Xu; Shirui Chen; Hui Zhang; Jing Wu; Qi Zhen; Yuwei Li; Liang Yong; Yafen Yu; Jiaqi Hong; Wenjun Wang; Jinping Gao; Huayang Tang; Xianfa Tang; Sen Yang; Liangdan Sun
Source:
Journal of proteomics 2019 v.205 pp. 103420
ISSN:
1874-3919
Subject:
acylation; bioinformatics; gene expression regulation; loci; lysine; patients; post-translational modification; proteins; proteome; psoriasis; signal transduction; skin lesions; tissues
Abstract:
... Lysine 2-hydroxyisobutyrylation is a newly discovered posttranslational modification. Although this modification is an important type of protein acylation, its role in psoriasis remains unstudied. We compared lesional and nonlesional psoriasis skin samples from 45 psoriasis patients. The result showed that this highly conserved modification was found in large quantities in both normal and diseased ...
DOI:
10.1016/j.jprot.2019.103420

28. Dihydromyricetin: A review on identification and quantification methods, biological activities, chemical stability, metabolism and approaches to enhance its bioavailability

Author:
Dan Liu; Yiqin Mao; Lijun Ding; Xin-An Zeng
Source:
Trends in food science & technology 2019 v.91 pp. 586-597
ISSN:
0924-2244
Subject:
acylation; antioxidants; bioavailability; chromatography; cyclodextrins; dietary supplements; encapsulation; flavonoids; heat; humans; laboratory animals; membrane permeability; metal ions; methylation; neuroprotective effect; pH; pharmacokinetics; phospholipids; solubility; United States
Abstract:
... Dihydromyricetin (DMY) is an important plant flavonoid, which has received great attention due to its health-benefiting activities, including antioxidant, antimicrobial, anti-inflammatory, anticancer, antidiabetic and neuroprotective activities. DMY capsules have been sold in US as a nutraceutical supplement to prevent alcoholic hangovers. The major disadvantage associated with DMY is its chemical ...
DOI:
10.1016/j.tifs.2019.07.038
PubMed:
32288229
PubMed Central:
PMC7127391

29. Direct conversion of shrimp shells to O-acylated chitin with antibacterial and anti-tumor effects by natural deep eutectic solvents

Author:
Mi Feng; Xingmei Lu; Jie Zhang; Yi Li; Chunyan Shi; Lingling Lu; Suojiang Zhang
Source:
Green chemistry 2019 v.21 no.1 pp. 87-98
ISSN:
1463-9270
Subject:
acidity; acids; acylation; alkalis; amino acids; antineoplastic activity; calcium carbonate; catalysts; chitin; choline; green chemistry; hydrogen bonding; protons; shrimp shells; solvents; spectroscopy; temperature
Abstract:
... To obtain O-acylated chitin from shrimp shells directly, the used solvent should have multiple functions to remove calcium carbonate, protein, and acylated chitin. Herein, we use the acidic natural deep eutectic solvents (NADESs) with the ability to release H⁺ and various hydrogen bonding sites to achieve the above goal. The involved NADESs with three abilities of decalcification, deproteinization ...
DOI:
10.1039/c8gc02506a

30. Diversity in flower colorations of Ranunculus asiaticus L. revealed by anthocyanin biosynthesis pathway in view of gene composition, gene expression patterns, and color phenotype

Author:
Yanfang Liu; Jianhua Zhang; Xiaohong Yang; Jiangmin Wang; Yangang Li; Peng Zhang; Jin Mao; Qingmei Huang; Hao Tang
Source:
Environmental science and pollution research international 2019 v.26 no.14 pp. 13785-13794
ISSN:
0944-1344
Subject:
Ranunculus asiaticus; acylation; anthocyanins; biosynthesis; color; cyanidin; delphinidin; flowers; gene expression regulation; glucose; glycosylation; methylation; models; pelargonidin; phenotype; transcriptomics; unigenes
Abstract:
... Anthocyanin biosynthesis is one of the best studied secondary metabolisms. However, related pathways were generally concluded based on anthocyanin components; most studies focused on the backbone forming of anthocyanidins (cyanidin, delphinidin, and pelargonidin) of model or commercial plants, while anthocyanin modification was less discussed, and non-model plants with abundant colorations were le ...
DOI:
10.1007/s11356-018-2779-3

31. ETV5 regulates GOAT/ghrelin system in an mTORC1-dependent manner

Author:
Zhuo Mao; Qing Yang; Wenzhen Yin; Wen Su; Hui Lin; Mingji Feng; Ke Pan; Yue Yin; Weizhen Zhang
Source:
Molecular and cellular endocrinology 2019 pp. -
ISSN:
0303-7207
Subject:
acylation; amino acids; biochemical pathways; energy; ghrelin; ghrelin receptors; mice; promoter regions; therapeutics; transferases
Abstract:
... Ghrelin, a 28 amino acid peptide hormone, regulates multiple important metabolic functions. Its acylation by ghrelin-O-acyl-transferase enzyme (GOAT) is required for binding to and activating its receptor, the growth hormone secretagogue receptor 1a. Mechanism underlying the regulation of GOAT and acyl ghrelin remains unclear. The present study demonstrated that ETV5 could transactivate GOAT promo ...
DOI:
10.1016/j.mce.2019.02.003

32. Effect of the inserted active-site-covering lid loop on the catalytic activity of a mutant B. subtilis γ-glutamyltransferase (GGT)

Author:
Michela Massone; Cinzia Calvio; Marco Rabuffetti; Giovanna Speranza; Carlo F. Morelli
Source:
RSC advances 2019 v.9 no.60 pp. 34699-34709
ISSN:
2046-2069
Subject:
Bacillus subtilis; Escherichia coli; acylation; bioactive properties; biocatalysts; carbon; catalytic activity; enzymatic treatment; enzyme activity; flavor enhancers; gamma-glutamyltransferase; glutamic acid; hydrolases; inheritance (genetics); mutants; peptides; sensory properties; substrate specificity; synthesis
Abstract:
... γ-Glutamylpeptides are compounds derived from the acylation of an amino acid or a short peptide by the γ-carboxyl carbon of the side chain of glutamic acid. Due to their altered chemico-physical and organoleptic properties, they may be interesting substitutes or precursors of parent compounds used in pharmaceutical, dietetic and cosmetic formulations. Some of them are naturally occurring flavor en ...
DOI:
10.1039/c9ra05941e

33. Effective MDR reversers through phytochemical study of Euphorbia boetica

Author:
Sara Neto; Noélia Duarte; Cecília Pedro; Gabriella Spengler; Joséph Molnár; Maria‐José U. Ferreira
Source:
Phytochemical analysis 2019 v.30 no.5 pp. 498-511
ISSN:
0958-0344
Subject:
Euphorbia; P-glycoproteins; acylation; chlorophyll; chromatography; derivatization; diterpenoids; doxorubicin; hydrolysis; lymphoma; methanol; mice; models; multiple drug resistance; neoplasm cells; nuclear magnetic resonance spectroscopy; phytochemicals; polyamides; polyesters; spectral analysis; therapeutics
Abstract:
... INTRODUCTION: Macrocyclic diterpenes from Euphorbia species were found to be promising modulators of multidrug resistance (MDR), a complex phenomenon that hampers the effectiveness of cancer therapy. OBJECTIVE: To find new effective MDR reversers through the phytochemical study of E. boetica, including isolation and molecular derivatisation. MATERIAL AND METHODS: The phytochemical study of E. boet ...
DOI:
10.1002/pca.2841

34. Effects of Refolding on Large-Scale RNA Structure

Author:
Elizabeth A. Dethoff; Kevin M. Weeks
Source:
Biochemistry 2019 v.58 no.28 pp. 3069-3077
ISSN:
1520-4995
Subject:
Dengue virus; RNA; acylation; denaturation; entropy; genome; heat; virion
Abstract:
... Understanding RNA-mediated functions requires a detailed characterization of the underlying RNA structure. In many cases, structure probing experiments are performed on RNA that has been “refolded” in some way, which may cause the conformation to differ from that of the native RNA. We used SHAPE−MaP (selective 2′-hydroxyl acylation analyzed by primer extension, read out by mutational profiling), t ...
DOI:
10.1021/acs.biochem.8b01219
PubMed:
31268687
PubMed Central:
PMC6687061

35. Efficient acylation of gastrodin by Aspergillus oryzae whole-cells in non-aqueous media

Author:
Xiaofeng Li; Maohua Ma; Xuan Xin; Yuqian Tang; Guanglei Zhao; Xinglong Xiao
Source:
RSC advances 2019 v.9 no.29 pp. 16701-16712
ISSN:
2046-2069
Subject:
Aspergillus oryzae; Gastrodia elata; acylation; benzyl alcohol; bioactive compounds; biocatalysis; blood plasma; brain; electrospray ionization mass spectrometry; enzymes; fatty acid esters; half life; ionic liquids; nuclear magnetic resonance spectroscopy; permeability; pyridines; tetrahydrofuran; therapeutics
Abstract:
... Gastrodin, a bioactive compound extracted from the plant source of Gastrodia elata Blume, has a wide range of therapeutic effects on central nervous system (CNS) diseases, but suffers from poor brain permeability and short half-life in plasma. In this study, fatty acid esters of gastrodin were successfully synthesized by a whole cell-based biocatalytic method. Aspergillus oryzae cells showed diffe ...
DOI:
10.1039/c9ra01605h

36. Efficient production of endotoxin depleted bioactive α-hemolysin of uropathogenic Escherichia coli

Author:
Vivek Verma; Surbhi Gupta; Parveen Kumar; Ankita Rawat; Rakesh Singh Dhanda; Manisha Yadav
Source:
Preparative biochemistry & biotechnology 2019 v.49 no.6 pp. 616-622
ISSN:
1532-2297
Subject:
acylation; biotechnology; endotoxins; hemolysis; lysine; operon; urinary tract; uropathogenic Escherichia coli; virulence
Abstract:
... Uropathogenic E. coli (UPEC), especially associated with severe urinary tract infections (UTI) pathologies, harbors an important virulence factor known as α-hemolysin (110 kDa). Hemolytic activity of α-hemolysin (HlyA) requires modification (acylation) of two lysine residues of HlyA by HlyC, part of operon hlyCABD. Most of the previous studies had used whole operon hlyCABD and gene tolC cloning fo ...
DOI:
10.1080/10826068.2019.1591993

37. Enantioenriched 1-Tetralones via Rhodium-Catalyzed Arylative Cascade Desymmetrization/Acylation of Alkynylmalonates

Author:
Aymane Selmani; Sylvain Darses
Source:
Organic letters 2019 v.21 no.19 pp. 8122-8126
ISSN:
1523-7052
Subject:
acylation; alkynes; carbon; catalytic activity; ligands; moieties; regioselectivity; rhodium
Abstract:
... An efficient atom-economic rhodium-catalyzed asymmetric arylative cyclization to access enantioenriched 1-tetralones, bearing a quaternary carbon stereocenter, is described, involving a highly regioselective alkyne insertion, a 1,4-Rh shift, and an acylation step via the desymmetrization of the malonate moiety thanks to an appropriate chiral diene ligand. ...
DOI:
10.1021/acs.orglett.9b03153

38. Enantioselective Radical Hydroacylation of Enals with α-Ketoacids Enabled by Photoredox/Amine Cocatalysis

Author:
Jia-Jia Zhao; Hong-Hao Zhang; Xu Shen; Shouyun Yu
Source:
Organic letters 2019 v.21 no.4 pp. 913-916
ISSN:
1523-7052
Subject:
acylation; chemical structure; enantioselectivity; free radicals; ions; organic compounds; redox reactions
Abstract:
... A photoredox/amine-cocatalyzed enantioselective radical hydroacylation of enals with α-ketoacids is described. Acyl radicals generated from α-ketoacids act as the acylation reagent with the iminium ions. This strategy provides an efficient way to access synthetically challenging 1,4-dicarbonyl compounds in an enantioselective manner. The reactions of various enals with α-ketoacids show the general ...
DOI:
10.1021/acs.orglett.8b03840

39. Enzymatic acylation of blackcurrant (Ribes nigrum) anthocyanins and evaluation of lipophilic properties and antioxidant capacity of derivatives

Author:
Wei Yang; Maaria Kortesniemi; Xueying Ma; Jie Zheng; Baoru Yang
Source:
Food chemistry 2019 v.281 pp. 189-196
ISSN:
0308-8146
Subject:
Ribes nigrum; absorbance; acylation; anthocyanins; antioxidant activity; black currants; dodecanoic acid; glucosides; hydrophilicity; lipid peroxidation; lipophilicity; moieties; nuclear magnetic resonance spectroscopy; rhamnose; rutin; thermal stability
Abstract:
... Anthocyanin-rich fractions isolated from blackcurrant (Ribes nigrum L.) including delphinidin-3-O-glucoside, delphinidin-3-O-rutinoside, cyanidin-3-O-glucoside and cyanidin-3-O-rutinoside were enzymatically acylated with lauric acid. All the four anthocyanins were successfully monoacylated, and their relative proportions did not affect the conversion yield. The acylation occurred at the 6″-OH posi ...
DOI:
10.1016/j.foodchem.2018.12.111

40. Esterification of Secondary Alcohols and Multi-hydroxyl Compounds by Candida antarctica Lipase B and Subtilisin

Author:
Hee-Jeong Cha; Jin-Byung Park; Seongsoon Park
Source:
Biotechnology and bioprocess engineering 2019 v.24 no.1 pp. 41-47
ISSN:
1226-8372
Subject:
Pseudozyma antarctica; acylation; alcohols; carbohydrates; carboxylic ester hydrolases; esterification; flavonoids; stereospecificity; subtilisin; surveys
Abstract:
... Enzyme-catalyzed esterification of secondary alcohols and multi-hydroxyl compounds is one of the most valuable reactions in organic synthesis. However, it is often difficult to achieve high reaction rates and high regio-selectivities with commonly used enzymes such as lipases and proteases. One of the reasons may include bulky substituents of the secondary alcohols and multi-hydroxyl compounds (e. ...
DOI:
10.1007/s12257-018-0379-1

41. Evaluation of astringent taste of green tea through mass spectrometry-based targeted metabolic profiling of polyphenols

Author:
Juhua Zhuang; Xinlong Dai; Mengqing Zhu; Shuxiang Zhang; Qianying Dai; Xiaolan Jiang; Yajun Liu; Liping Gao; Tao Xia
Source:
Food chemistry 2019 pp. -
ISSN:
0308-8146
Subject:
acylation; astringency; autumn; condensation reactions; flavanols; flavonols; glycosylation; green tea; hydroxylation; liquid chromatography; mass spectrometry; metabolomics; polyphenols; principal component analysis; spring
Abstract:
... The contributions of many polyphenols other than catechins and flavonols to the astringency of tea are often neglected. Here, the contributions of polyphenols were assessed through targeted metabolic profiling using liquid chromatography–mass spectrometry. A total of 86 polyphenols were identified from 47 green tea samples with varying astringency scores, of which 76 compounds were relatively quan ...
DOI:
10.1016/j.foodchem.2019.125507

42. Extraordinary solution-processability of lignin in phenol–maleic anhydride and dielectric films with controllable properties

Author:
Qi Fan; Tao Liu; Chaoqun Zhang; Zhenzhen Liu; Wenxu Zheng; Rongxian Ou; Qingwen Wang
Source:
Journal of materials chemistry A 2019 v.7 no.40 pp. 23162-23172
ISSN:
2050-7496
Subject:
acylation; ambient temperature; cost effectiveness; crosslinking; dielectric properties; electronics; hydrogen bonding; lignin; maleic anhydrides; mechanical properties; phenol; solvents; value added
Abstract:
... Highly efficient and cost-competitive dissolution of lignin is vital to value-added utilization of lignin waste streams. Here, a novel and cost-efficient supramolecular eutectic liquid (phenol-MAH) comprising phenol and maleic anhydride was developed, which can rapidly dissolve lignin with ultrahigh-solid loading (>50 wt%) at room temperature. About 70 wt% lignin loading in phenol-MAH leads to a h ...
DOI:
10.1039/c9ta06665a

43. Fabrication of Stable and Self-Assembling Rapeseed Protein Nanogel for Hydrophobic Curcumin Delivery

Author:
Zhigao Wang; Rui Xue Zhang; Cheng Zhang; Caixia Dai; Xingrong Ju; Rong He
Source:
Journal of agricultural and food chemistry 2019 v.67 no.3 pp. 887-894
ISSN:
1520-5118
Subject:
acylation; antineoplastic activity; biopolymers; cell lines; crosslinking; curcumin; disulfide bonds; drug delivery systems; encapsulation; freeze drying; functional foods; heat; heat treatment; hydrophilicity; hydrophobicity; ionic strength; moieties; nanoparticles; neoplasm cells; neoplasms; pH; protein denaturation; protein isolates; rapeseed protein; temperature
Abstract:
... Food-dervied biopolymer nanogels have recently received considerable attention as favorable carrier systems for nutraceuticals and drugs. In the present study, new biocompatible and self-assembled acylated rapeseed protein isolate (ARPI)-based nanogels were fabricated for potential hydrophobic drug delivery by chemical acylation and heat-induced protein denaturation. The effects of the ARPI concen ...
DOI:
10.1021/acs.jafc.8b05572

44. Formal [4 + 2] Cycloadditions of Anhydrides and α,β-Unsaturated N-Tosyl Ketimines

Author:
Noah P. Burlow; Sara Y. Howard; Carla M. Saunders; James C. Fettinger; Dean J. Tantillo; Jared T. Shaw
Source:
Organic letters 2019 v.21 no.4 pp. 1046-1049
ISSN:
1523-7052
Subject:
acylation; anhydrides; chemical structure; cycloaddition reactions; diastereoselective synthesis; esterification; ketimines; ketones
Abstract:
... A method for the diastereoselective synthesis of highly substituted β-enamino ketones from anhydrides and ketone-derived imines is reported. Cyclic, enolizable anhydrides undergo a base-promoted conjugate addition reaction with α,β-unsaturated N-tosyl ketimines, followed by an intramolecular acylation to give formal [4 + 2] cycloaddition products. The carboxylic acid-containing products are formed ...
DOI:
10.1021/acs.orglett.8b04091

45. Formation, Tentative Mass Spectrometric Identification, and Color Stability of Acetaldehyde-Catalyzed Condensation of Red Radish (Raphanus sativus) Anthocyanins and (+) Catechin

Author:
Nathan B. Stebbins; Luke R. Howard; Ronald L. Prior; Cindi Brownmiller; Rohana Liyanage; Jackson O. Lay
Source:
Beverages 2019 v.5 no.4 pp. -
ISSN:
2306-5710
Subject:
Raphanus sativus; Zymomonas mobilis; acetaldehyde; acylation; ambient temperature; anthocyanins; catechin; cocoa powder; color; food colorants; mass spectrometry; phenolic acids; radishes
Abstract:
... Red radish anthocyanins are relatively stable due to the acylation of anthocyanins with organic and phenolic acid moieties. The objective of this study was to create and identify a novel ethyl-bridged acylated anthocyanin with a stable violet color from red radishes in the presence of acetaldehyde and catechin. After incubation at ambient temperature for one week at 21 °C the reaction mixture with ...
DOI:
10.3390/beverages5040064

46. Genome-wide analysis and functional characterization of Acyl-CoA:diacylglycerol acyltransferase from soybean identify GmDGAT1A and 1B roles in oil synthesis in Arabidopsis seeds

Author:
Jiangzhe Zhao; Rongrong Bi; Shuxiang Li; Dan Zhou; Yang Bai; Guangqin Jing; Kewei Zhang; Wenhua Zhang
Source:
Journal of plant physiology 2019 pp. -
ISSN:
0176-1617
Subject:
Arabidopsis; Glycine max; acylation; catalytic activity; diacylglycerol acyltransferase; gene expression; genes; genome-wide association study; leaves; lipid content; mutants; protein content; seed oils; seeds; soybeans; transgenic plants; triacylglycerols; yeasts
Abstract:
... Acyl-CoA:diacylglycerol acyltransferase (DGAT) is a key enzyme in the Kennedy pathway of triacylglycerol (TAG) synthesis. It catalyzes the acyl-CoA-dependent acylation of sn-1, 2-diacylglycerol to form TAG. DGATs in soybean (Glycine max) have been reported, but their functions are largely unclear. Here we cloned three members of DGAT1 and four members of DGAT2 family from soybean, named GmDGAT1A t ...
DOI:
10.1016/j.jplph.2019.153019

47. Heteropoly acids-functionalized Janus particles as catalytic emulsifier for heterogeneous acylation in flow ionic liquid-in-oil Pickering emulsion

Author:
Xiuping Tang; Yu Hou; Qing Bo Meng; Guolin Zhang; Fuxin Liang; Xi-Ming Song
Source:
Colloids and surfaces 2019 v.570 pp. 191-198
ISSN:
0927-7757
Subject:
acylation; catalysts; catalytic activity; emulsifiers; emulsifying; emulsions; ionic liquids; moieties; nanoparticles; silica; toluene
Abstract:
... In this work, we developed a continuous non-aqueous flow Pickering emulsion interface catalysis (FPIC) system for heterogeneous acylation. Poly (1-vinyl-3-ethylimidazolium bromide) (PILs) functionalized silica@PS/PDVB Janus particles (JPs) were synthesized. The catalyst H3PW12O40 (PA) was then immobilized on PIL-modified JPs by anion-exchanging. The PIL grafted on the silica side and the inherent ...
DOI:
10.1016/j.colsurfa.2019.02.066

48. High flux reverse osmosis membranes fabricated with hyperbranched polymers via novel twice-crosslinked interfacial polymerization method

Author:
Hao Wu; Xiao Zhang; Xue-Ting Zhao; Ke Li; Chun-Yang Yu; Li-Fen Liu; Yong-Feng Zhou; Cong-Jie Gao
Source:
Journal of membrane science 2019 pp. -
ISSN:
0376-7388
Subject:
acylation; crosslinking; hydrophilicity; manganese; moieties; organochlorine compounds; polyamides; polyesters; polymerization; reverse osmosis; thin film composite membranes; trimesoyl chloride
Abstract:
... In this study, two kinds of carboxyl-terminated hyperbranched polyesters (HBPs) with special three-dimensional structure were proposed to act as the substrates to synthesize two new kinds of acyl chloride-terminated hyperbranched polyesters (HBPACs) that were used as the key functional materials to participate in the interfacial polymerization reaction to fabricate the novel thin film composite me ...
DOI:
10.1016/j.memsci.2019.117480

49. Highly chemoselective, sterically sensitive NHC-catalysed amine acylation with pyridil

Author:
Amy C. Maguire; Vikas Kumar; Stephen J. Connon
Source:
Chemical communications 2019 v.55 no.90 pp. 13526-13529
ISSN:
1364-548X
Subject:
acylation; amides; amines; carbenes; catalytic activity; chemoselectivity; heterocyclic nitrogen compounds; hydrolysis
Abstract:
... A new strategy for the protection of amines has been developed involving reaction with pyridil under the influence of N-heterocyclic carbene catalysis. The methodology is capable of distinguishing between two amines characterised by small differences in steric bulk and the resulting pyridoyl amides can be cleaved without requiring either strongly acidic or basic hydrolysis. ...
DOI:
10.1039/c9cc06937b

50. Homogeneous acylation of Cellulose diacetate: Towards bioplastics with tuneable thermal and water transport properties

Author:
Manon Boulven; Guilhem Quintard; Amandine Cottaz; Catherine Joly; Aurélia Charlot; Etienne Fleury
Source:
Carbohydrate polymers 2019 v.206 pp. 674-684
ISSN:
0144-8617
Subject:
acylation; bioplastics; cellulose; esters; glass; moieties; solvents; temperature; water solubility
Abstract:
... In this study, we report a simple, non-degrading and efficient homogeneous acylation of cellulose diacetate (CDA) by using a large panel of commercially available acylating aliphatic moieties, differing in their structure (fatty, ramified, bulky, cycloaliphatic, aromatic, more or less spaced from the cellulose backbone), in view of generating a library of well-defined cellulose mixed esters with e ...
DOI:
10.1016/j.carbpol.2018.11.030