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2,733 Results Found

  • Review
  • Open Access
21 Citations
6,545 Views
19 Pages

18 March 2021

Interactions between land plants and other organisms such as pathogens, pollinators, or symbionts usually involve a variety of specialized effectors participating in complex cross-talks between organisms. Fatty acids and their lipid derivatives play...

  • Article
  • Open Access
20 Citations
4,564 Views
15 Pages

Tunable Aryl Imidazolium Recyclable Ionic Liquid with Dual Brønsted–Lewis Acid as Green Catalyst for Friedel–Crafts Acylation and Thioesterification

  • Yi-Jyun Lin,
  • Yao-Peng Wu,
  • Mayur Thul,
  • Ming-Wei Hung,
  • Shih-Huan Chou,
  • Wen-Tin Chen,
  • Wesley Lin,
  • Michelle Lin,
  • Daggula Mallikarjuna Reddy and
  • Hsin-Ru Wu
  • + 2 authors

15 January 2020

Unique tunable aryl imidazolium ionic liquids successfully catalyzed Friedel–Crafts acylation and thioesterification in sealed tubes. These reactions can form a C−C bond and a C−S bond with high atom economy. Ionic liquids exhibited...

  • Article
  • Open Access
32 Citations
5,220 Views
14 Pages

19 April 2019

This study presents the synthesis, characteristics and catalytic reactivity of sustainable bifunctional heterogeneous catalysts derived from coal fly ash-based geopolymer, particularly those with a high Ca content (C-class) fly ash. The developed cat...

  • Article
  • Open Access
10 Citations
14,531 Views
8 Pages

16 April 2009

Methanetrisulfonic acid had been prepared for the first time over 140 years ago, but it was used only scarcely in chemical transformations. In the course of our activities dealing with key-steps of industrial syntheses of vitamins, e.g. economically...

  • Review
  • Open Access
62 Citations
9,739 Views
11 Pages

3 December 2019

The lipid signal is becoming increasingly crowded as increasingly fatty acid amide derivatives are being identified and considered relevant therapeutic targets. The identification of N-arachidonoyl-ethanolamine as endogenous ligand of cannabinoid typ...

  • Article
  • Open Access
4 Citations
4,296 Views
13 Pages

Acyl Hydrazides and Acyl Hydrazones as High-Performance Chemical Exchange Saturation Transfer MRI Contrast Agents

  • Shaowei Bo,
  • Dong Zhang,
  • Mengjie Ma,
  • Xukai Mo,
  • Julia Stabinska,
  • Michael T. McMahon,
  • Changzheng Shi and
  • Liangping Luo

23 April 2023

Chemical exchange saturation transfer (CEST) MRI is a versatile molecular imaging approach that holds great promise for clinical translation. A number of compounds have been identified as suitable for performing CEST MRI, including paramagnetic CEST...

  • Review
  • Open Access
7 Citations
3,409 Views
31 Pages

16 December 2022

Acyl moiety is a common structural unit in organic molecules, thus acylation methods have been widely explored to construct various functional compounds. While the traditional Friedel–Crafts acylation processes work to allow viable construction...

  • Article
  • Open Access
17 Citations
2,962 Views
18 Pages

2 February 2022

Acylated derivatives of the dietary phenolic, resveratrol, were prepared via enzymatic and chemical transesterification modification with selected vinyl fatty acids to expand the potential application of resveratrol and its acylated derivatives in fu...

  • Article
  • Open Access
5 Citations
4,126 Views
12 Pages

In this study, we describe the synthesis of cyclic N-acyl amidines from readily available N-heteroarenes. The synthetic methodology utilized the versatile N-silyl enamine intermediates from the hydrosilylation of N-heteroarenes for the [3 + 2] cycloa...

  • Article
  • Open Access
1 Citations
2,856 Views
15 Pages

Pennelliiside D, a New Acyl Glucose from Solanum pennellii and Chemical Synthesis of Pennelliisides

  • Rishni Masimbula,
  • Hiroto Kobayashi,
  • Tenki Nakashima,
  • Yurika Nambu,
  • Naoki Kitaoka and
  • Hideyuki Matsuura

Acyl glucoses are a group of specialized metabolites produced by Solanaceae. Solanum pennellii, a wild-type tomato plant, produces acyl glucoses in its hair-like epidermal structures known as trichomes. These compounds have been found to be herbicide...

  • Article
  • Open Access
17 Citations
6,604 Views
18 Pages

Discovery of Novel Small Molecule Anti-HCV Agents via the CypA Inhibitory Mechanism Using O-Acylation-Directed Lead Optimization

  • Wenzhong Yan,
  • Jie Qing,
  • Hanbing Mei,
  • Fei Mao,
  • Jin Huang,
  • Jin Zhu,
  • Hualiang Jiang,
  • Lei Liu,
  • Linqi Zhang and
  • Jian Li

4 June 2015

In this work, the relationship between cyclophilin A (CypA) and HCV prompted us to screen a series of small molecule CypA inhibitors which were previously reported by our group. Among them, compound 1, discovered as a non-immunosuppressive anti-HCV a...

  • Article
  • Open Access
5 Citations
2,544 Views
15 Pages

Hierarchical Zeolites Prepared Using a Surfactant-Mediated Strategy: ZSM-5 vs. Y as Catalysts for Friedel–Crafts Acylation Reaction

  • Angela Martins,
  • Beatriz Amaro,
  • M. Soledade C. S. Santos,
  • Nelson Nunes,
  • Ruben Elvas-Leitão and
  • Ana P. Carvalho

20 January 2024

Hierarchical ZSM5 and Y zeolites were prepared through a surfactant-mediated strategy with NH4OH changing the duration of the treatment and the amount of CTAB surfactant and taking as reference multiples of the critical micellar concentration (CMC)....

  • Article
  • Open Access
2 Citations
11,272 Views
15 Pages

An Efficient, Mild and Solvent-Free Synthesis of Benzene Ring Acylated Harmalines

  • Sabira Begum,
  • Farhat Zubair,
  • Syed Nawazish Ali and
  • Bina Shaheen Siddiqui

28 December 2009

A facile synthesis of a series of benzene ring acylated analogues of harmaline has been achieved by Friedel-Crafts acylation under solvent-free conditions at room temperature using acyl halides/acid anhydrides and AlCl3. The reaction afforded 10- and...

  • Review
  • Open Access
23 Citations
4,657 Views
17 Pages

The Plant Fatty Acyl Reductases

  • Xuanhao Zhang,
  • Yi Liu,
  • Asma Ayaz,
  • Huayan Zhao and
  • Shiyou Lü

18 December 2022

Fatty acyl reductase (FAR) is a crucial enzyme that catalyzes the NADPH-dependent reduction of fatty acyl-CoA or acyl-ACP substrates to primary fatty alcohols, which in turn acts as intermediate metabolites or metabolic end products to participate in...

  • Article
  • Open Access
30 Citations
7,043 Views
9 Pages

29 May 2012

The formation of 1,3-diketones was observed in the reactions of bulky acyl chlorides with methyllithium. The reaction products depend on the steric hindrance around the carbonyl group of the acyl chloride and the electronic effect of the group(s) lin...

  • Article
  • Open Access
3 Citations
3,353 Views
12 Pages

Conformational Changes of Acyl Carrier Protein Switch the Chain Length Preference of Acyl-ACP Thioesterase ChFatB2

  • Tianxiang Yang,
  • Yunlong Yang,
  • Ming Yang,
  • Jiangang Ren,
  • Changying Xue,
  • Yanbin Feng and
  • Song Xue

Microbial fatty acids are synthesized by Type II fatty acid synthase and could be tailored by acyl-ACP thioesterase. With the prospects of medium-chain fatty-acid-derivative biofuels, the selectivity of thioesterase has been studied to control the fa...

  • Article
  • Open Access
1 Citations
3,725 Views
11 Pages

2 February 2019

The mechanism of Pd-catalyzed, Friedel-Crafts intermolecular acylation of arenes to ketones was comprehensively investigated by using DFT calculations. The calculated results revealed that this transformation was composed of several key steps: C&ndas...

  • Article
  • Open Access
35 Citations
12,633 Views
15 Pages

10 August 2012

Fucosylated chondroitin sulfate (FuCS), a kind of complex glycosaminoglycan from sea cucumber, has potent anticoagulant activity. In order to understand the relationship between structures and activity, the depolymerized FuCS (dFuCS) was chosen to pr...

  • Article
  • Open Access
121 Citations
9,041 Views
7 Pages

A New Convenient Synthesis of 5-Acyl-1,2,3,4-tetrahydropyrimidine-2-thiones/ones

  • Anatoly D. Shutalev,
  • Ekaterina A. Kishko,
  • Natalie V. Sivova and
  • Aleksei Yu. Kuznetsov

9 March 1998

An efficient one-pot synthesis of 5-acyl-1,2,3,4-tetrahydropyrimidine-2-thiones/ones is described. The synthesis is based on the reaction of readily available α-tosyl substituted thioureas or ureas with enolates of β-oxoesters or 1,3-dicarbonyl compo...

  • Review
  • Open Access
4 Citations
7,072 Views
31 Pages

19 September 2024

Diesters of geminal diols (R-CH(O-CO-R′)2, RR′C(OCOR″)2, etc. with R = H, aryl or alkyl) are termed acylals according to IUPAC recommendations (Rule P-65.6.3.6 Acylals) if the acids involved are carboxylic acids. Similar condensatio...

  • Article
  • Open Access
5 Citations
2,131 Views
10 Pages

Inhibitory Investigations of Acyl-CoA Derivatives against Human Lipoxygenase Isozymes

  • Michelle Tran,
  • Kevin Yang,
  • Alisa Glukhova,
  • Michael Holinstat and
  • Theodore Holman

Lipid metabolism is a complex process crucial for energy production resulting in high levels of acyl-coenzyme A (acyl-CoA) molecules in the cell. Acyl-CoAs have also been implicated in inflammation, which could be possibly linked to lipoxygenase (LOX...

  • Review
  • Open Access
7 Citations
6,013 Views
19 Pages

Pharmacological Activities and Chemical Stability of Natural and Enzymatically Acylated Anthocyanins: A Comparative Review

  • Jimena Yañez-Apam,
  • Astrid Domínguez-Uscanga,
  • Azucena Herrera-González,
  • Jonhatan Contreras,
  • Luis Mojica,
  • Gail Mahady and
  • Diego A. Luna-Vital

23 April 2023

Anthocyanins (ANCs) are naturally occurring water-soluble pigments responsible for conferring red, blue, and purple colors to fruits, vegetables, flowers, and grains. Due to their chemical structure, they are highly susceptible to degradation by exte...

  • Proceeding Paper
  • Open Access
1 Citations
1,660 Views
8 Pages

MW-Assisted Synthesis of Eight New 6-Nitrilmethyl Pyrrolo[3,4-b]pyridin-5-Ones via a Domino Process: aza Diels–Alder/N-Acylation/Aromatization

  • Manuel A. Rentería-Gómez,
  • Shrikant G. Pharande,
  • Alejandro Islas-Jácome,
  • Eduardo González-Zamora and
  • Rocío Gámez-Montaño

14 November 2018

An efficient Microwave (MW)-assisted synthesis of eight new 6-nitrilmethyl-pyrrolo[3,4-b]pyridin-5-ones via a domino process: aza Diels–Alder/N-acylation/aromatization (dehydration–decarboxylation) from their corresponding 2-aminonitrile-oxazoles and...

  • Communication
  • Open Access
2 Citations
3,292 Views
15 Pages

15 November 2022

An efficient acylation/cyclization reaction of 6-acyl phenanthridines with oxime esters using photoredox catalysis has been developed. This radical acyl transfer strategy enables a facile access to acyl-substituted phenanthridines with good yield and...

  • Article
  • Open Access
14 Citations
6,727 Views
15 Pages

26 March 2013

A series of N-acylated analogues of 1-isopropyl-3-acyl-5-methyl-benzimidazolone were synthesized. Bioassay results indicated that analogues 5-07 and 5-19 exhibited the most potency against Bacillus cereus, Bacillus subtilis, Staphylococcus aureus, Es...

  • Article
  • Open Access
4 Citations
4,791 Views
15 Pages

Multi-Method Quantification of Acetyl-Coenzyme A and Further Acyl-Coenzyme A Species in Normal and Ischemic Rat Liver

  • Malgorzata Tokarska-Schlattner,
  • Nour Zeaiter,
  • Valérie Cunin,
  • Stéphane Attia,
  • Cécile Meunier,
  • Laurence Kay,
  • Amel Achouri,
  • Edwige Hiriart-Bryant,
  • Karine Couturier and
  • Cindy Tellier
  • + 5 authors

6 October 2023

Thioesters of coenzyme A (CoA) carrying different acyl chains (acyl-CoAs) are central intermediates of many metabolic pathways and donor molecules for protein lysine acylation. Acyl-CoA species largely differ in terms of cellular concentrations and p...

  • Article
  • Open Access
31 Citations
8,249 Views
7 Pages

8 October 2010

A series of 1-acyl-3-(2'-aminophenyl) thiourea derivatives were designed and synthesized. The structures of all the newly synthesized compounds were identified by IR, elemental analysis, 1H-NMR and 13C-NMR. Their anti-intestinal nematode activities a...

  • Article
  • Open Access
7 Citations
4,402 Views
16 Pages

19 May 2020

Highly active metal chlorides grafted on silicoaluminophosphate number 5, MClx/SAPO-5 (M = Cu, Co, Sn, Fe and Zn) catalysts via simple grafting of respective metal chlorides (MClx) onto SAPO-5 are reported. The study shows that thermochemical treatme...

  • Review
  • Open Access
6 Citations
4,686 Views
23 Pages

Histone Acyl Code in Precision Oncology: Mechanistic Insights from Dietary and Metabolic Factors

  • Sultan Neja,
  • Wan Mohaiza Dashwood,
  • Roderick H. Dashwood and
  • Praveen Rajendran

30 January 2024

Cancer etiology involves complex interactions between genetic and non-genetic factors, with epigenetic mechanisms serving as key regulators at multiple stages of pathogenesis. Poor dietary habits contribute to cancer predisposition by impacting DNA m...

  • Communication
  • Open Access
28 Citations
5,705 Views
11 Pages

1 February 2019

We report a general, highly selective method for Suzuki–Miyaura cross-coupling of N-acylphthalimides via N–C(O) acyl cleavage catalyzed by Pd–PEPPSI-type precatalysts. Of broad synthetic interest, the method introduces N-acylphthali...

  • Article
  • Open Access
5 Citations
4,291 Views
21 Pages

Synthesis and Biological Evaluation of New N-Acyl-α-amino Ketones and 1,3-Oxazoles Derivatives

  • Theodora-Venera Apostol,
  • Luminita Gabriela Marutescu,
  • Constantin Draghici,
  • Laura-Ileana Socea,
  • Octavian Tudorel Olaru,
  • George Mihai Nitulescu,
  • Elena Mihaela Pahontu,
  • Gabriel Saramet,
  • Cristian Enache-Preoteasa and
  • Stefania-Felicia Barbuceanu

19 August 2021

In order to develop novel bioactive substances with potent activities, some new valine-derived compounds incorporating a 4-(phenylsulfonyl)phenyl fragment, namely, acyclic precursors from N-acyl-α-amino acids and N-acyl-α-amino ketones classes, and h...

  • Review
  • Open Access
1 Citations
4,077 Views
89 Pages

Recent Advances on O-Ethoxycarbonyl and O-Acyl Protected Cyanohydrins

  • Héctor Manuel Torres Domínguez,
  • Luis Mauricio Hernández Villaverde and
  • Ronan Le Lagadec

3 August 2021

Ethoxycarbonyl cyanohydrins and O-acyl cyanohydrins are examples of O-protected cyanohydrins in which the protecting group presents an electrophilic center, contributing to additional reaction pathways. The first section of this review describes rece...

  • Article
  • Open Access
4 Citations
4,548 Views
12 Pages

Acyl-Coa Thioesterases: A Rheostat That Controls Activated Fatty Acids Modulates Dengue Virus Serotype 2 Replication

  • Laura A. St Clair,
  • Stephanie A. Mills,
  • Elena Lian,
  • Paul S. Soma,
  • Aritra Nag,
  • Caroline Montgomery,
  • Gabriela Ramirez,
  • Nunya Chotiwan,
  • Rebekah C. Gullberg and
  • Rushika Perera

25 January 2022

During infection with dengue viruses (DENVs), the lipid landscape within host cells is significantly altered to assemble membrane platforms that support viral replication and particle assembly. Fatty acyl-CoAs are key intermediates in the biosynthesi...

  • Feature Paper
  • Article
  • Open Access
36 Citations
5,966 Views
11 Pages

Nickel-Catalyzed Decarbonylative Stannylation of Acyl Fluorides under Ligand-Free Conditions

  • Xiu Wang,
  • Zhenhua Wang,
  • Li Liu,
  • Yuya Asanuma and
  • Yasushi Nishihara

28 April 2019

Nickel-catalyzed decarbonylative stannylation of acyl fluorides under ligand-free conditions was disclosed. A variety of aromatic acyl fluorides are capable of reacting with silylstannanes in the presence of cesium fluoride. A one-pot decarbonylative...

  • Article
  • Open Access
7 Citations
3,633 Views
17 Pages

Urinary Medium-Chained Acyl-Carnitines Sign High Caloric Intake whereas Short-Chained Acyl-Carnitines Sign High -Protein Diet within a High-Fat, Hypercaloric Diet in a Randomized Crossover Design Dietary Trial

  • Nadezda V. Khodorova,
  • Annemarie Rietman,
  • Douglas N. Rutledge,
  • Jessica Schwarz,
  • Julien Piedcoq,
  • Serge Pilard,
  • Els Siebelink,
  • Frans J. Kok,
  • Daniel Tomé and
  • Marco Mensink
  • + 1 author

3 April 2021

The western dietary pattern is known for its frequent meals rich in saturated fat and protein, resulting in a postprandial state for a large part of the day. Therefore, our aim was to investigate the postprandial glucose and lipid metabolism in respo...

  • Feature Paper
  • Article
  • Open Access
2 Citations
2,670 Views
15 Pages

23 May 2023

A new and powerful visible-light-induced difunctionalization of the C-C σ-bond of alkylidenecyclopropanes via a ring-opening process was developed. Importantly, acyl chlorides are used as both acyl and Cl sources. This strategy provides an effe...

  • Review
  • Open Access
2 Citations
2,408 Views
9 Pages

Nucleoside Diphosphate Kinases Are ATP-Regulated Carriers of Short-Chain Acyl-CoAs

  • Domenico Iuso,
  • Julie Guilliaumet,
  • Uwe Schlattner and
  • Saadi Khochbin

Nucleoside diphosphate (NDP) kinases 1 and 2 (NME1/2) are well-characterized enzymes known for their NDP kinase activity. Recently, these enzymes have been shown by independent studies to bind coenzyme A (CoA) or acyl-CoA. These findings suggest a hi...

  • Review
  • Open Access
10 Citations
4,845 Views
11 Pages

1 September 2022

The lipid-regulating drug gemfibrozil is a useful medication for reducing high cholesterol and triglycerides in the blood. In addition to oxidation, it undergoes extensive glucuronidation to produce gemfibrozil acyl glucuronide, which is a known mech...

  • Article
  • Open Access
76 Citations
8,886 Views
12 Pages

Synthesis and Bioactivity of Pyrazole Acyl Thiourea Derivatives

  • Jian Wu,
  • Qing Shi,
  • Zhuo Chen,
  • Ming He,
  • Linhong Jin and
  • Deyu Hu

3 May 2012

Sixteen novel pyrazole acyl thiourea derivatives 6 were synthesized from monomethylhydrazine (phenylhydrazine) and ethyl acetoacetate. The key 5-chloro-3-methyl-1-substituted-1H-pyrazole-4-carbonyl chloride intermediates 4 were first generated in fou...

  • Article
  • Open Access
55 Citations
6,126 Views
16 Pages

The Importance of Reaction Conditions on the Chemical Structure of N,O-Acylated Chitosan Derivatives

  • Agnieszka Piegat,
  • Agata Goszczyńska,
  • Tomasz Idzik and
  • Agata Niemczyk

22 August 2019

The structure of acylated chitosan derivatives strongly determines the properties of obtained products, influencing their hydrodynamic properties and thereby their solubility or self-assembly susceptibility. In the present work, the significance of s...

  • Review
  • Open Access
20 Citations
3,437 Views
15 Pages

17 November 2022

N-heterocyclic carbene (NHC) has been widely used as an organocatalyst for both umpolung and non-umpolung chemistry. Previous works mainly focus on species including Breslow intermediate, azolium enolate intermediate, homoenolate intermediate, alkeny...

  • Review
  • Open Access
11 Citations
3,898 Views
21 Pages

Acyl(imidoyl)ketenes: Reactive Bidentate Oxa/Aza-Dienes for Organic Synthesis

  • Ekaterina A. Lystsova,
  • Ekaterina E. Khramtsova and
  • Andrey N. Maslivets

17 August 2021

Polyfunctional building blocks are essential for the implementation of diversity-oriented synthetic strategies, highly demanded in small molecule libraries’ design for modern drug discovery. Acyl(imidoyl)ketenes are highly reactive organic compounds,...

  • Communication
  • Open Access
1 Citations
1,346 Views
8 Pages

23 October 2024

Peptoids have emerged as a useful alternative to peptides. However, N-acylated peptoids have occasionally undergone truncation at the terminal peptoid unit under acidic conditions. We previously reported on the mechanistic and electronic aspects of t...

  • Article
  • Open Access
8 Citations
3,121 Views
16 Pages

Efficient Synthesis of Acylated, Dialkyl α-Hydroxy-Benzylphosphonates and Their Anticancer Activity

  • Petra R. Varga,
  • Alexandra Belovics,
  • Péter Bagi,
  • Szilárd Tóth,
  • Gergely Szakács,
  • Szilvia Bősze,
  • Rita Szabó,
  • László Drahos and
  • György Keglevich

23 March 2022

An efficient method applying acyl chlorides as reagents was developed for the acylation of the hindered hydroxy group of dialkyl α-hydroxy-benzylphosphonates. The procedure did not require any catalyst. A few acylations were also performed with...

  • Communication
  • Open Access
3 Citations
2,976 Views
9 Pages

28 May 2021

The reliable and efficient counting of active sites in catalytic olefin polymerization has been realized by using acyl chloride as the quench-labeling agent. However, the molar ratio of acyl chloride to the alkylaluminum cocatalyst must be larger tha...

  • Article
  • Open Access
3 Citations
2,006 Views
18 Pages

24 March 2024

Shale hydration dispersion and swelling are primary causes of wellbore instability in oil and gas reservoir exploration. In this study, inulin, a fructo-oligosaccharide extracted from Jerusalem artichoke roots, was modified by acylation with three ac...

  • Review
  • Open Access
38 Citations
13,031 Views
36 Pages

25 December 2019

The acyl Sonogashira reaction represents an extension of Sonogashira cross-coupling to acid chlorides which replace aryl or vinyl halides, while terminal acetylenes are used as coupling partners in both reactions. The introduction of a carbonyl funct...

  • Article
  • Open Access
1,830 Views
13 Pages

28 July 2023

Short- and medium-chain acyl-CoA synthetases catalyze similar two-step reactions in which acyl substrate and ATP bind to form an enzyme-bound acyl-adenylate, then CoA binds for formation of the acyl-CoA product. We investigated the roles of active si...

  • Article
  • Open Access
3 Citations
12,626 Views
15 Pages

6 August 2008

A simple, rapid, solvent-free, room temperature one pot synthesis of benzene ring acylated and demethylated analogues of harmine using acyl halides/acid anhydrides and AlCl3 has been developed. Eight different acyl halides/acid anhydrides were used i...

  • Article
  • Open Access
3 Citations
7,398 Views
14 Pages

Modification of Boc-Protected CAN508 via Acylation and Suzuki-Miyaura Coupling

  • Martin Pisár,
  • Eva Schütznerová,
  • Filip Hančík,
  • Igor Popa,
  • Zdeněk Trávníček and
  • Petr Cankař

12 January 2018

The cyclin-dependent kinase inhibitor, CAN508, was protected with di-tert-butyl dicarbonate to access the amino-benzoylated pyrazoles. The bromo derivatives were further arylated by Suzuki-Miyaura coupling using the XPhos Pd G2 pre-catalyst. The coup...

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