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14 Results Found

  • Feature Paper
  • Article
  • Open Access
3 Citations
3,109 Views
11 Pages

28 April 2023

The enzymatic acetylation in the organic solvents of a number of the important bioactive cardiac glycosides was investigated. With the bufanolide proscillaridin A and the cardenolide lanatoside C, acylation, as expected, occurred at the secondary 4&p...

(This article belongs to the Section Biocatalysis)
  • Article
  • Open Access
22 Citations
3,444 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...

(This article belongs to the Special Issue Antioxidants from Natural Sources: Separation and Characterization)
  • Article
  • Open Access
56 Citations
18,561 Views
15 Pages

Regioselective O-Derivatization of Quercetin via Ester Intermediates. An Improved Synthesis of Rhamnetin and Development of a New Mitochondriotropic Derivative

  • Andrea Mattarei,
  • Lucia Biasutto,
  • Federico Rastrelli,
  • Spiridione Garbisa and ,
  • Ester Marotta,
  • Mario Zoratti and
  • Cristina Paradisi
  • + 2 authors+ 0 author

6 July 2010

The regioselective synthesis of several quercetin (3,3’,4’,5,7-pentahydroxy flavone) tetraesters bearing a single free OH on 5-C was achieved in good yield by proper choice of reaction conditions using common esterification procedures. Tetracetylated...

(This article belongs to the Special Issue Phenolics and Polyphenolics)
  • Article
  • Open Access
16 Citations
6,261 Views
12 Pages

Chemo-Enzymatic Synthesis of Oligoglycerol Derivatives

  • Abhishek K. Singh,
  • Remi Nguyen,
  • Nicolas Galy,
  • Rainer Haag and ,
  • Sunil K. Sharma and
  • Christophe Len
  • + 1 author+ 0 author

9 August 2016

A cleaner and greener method has been developed and used to synthesize 14 different functionalized oligomer derivatives of glycerol in moderate 29%–39% yields over three steps. After successive regioselective enzymatic acylation of the primary hydrox...

(This article belongs to the Special Issue Catalysis Applied to Biomass—Toward Sustainable Processes and Chemicals)
  • Article
  • Open Access
13 Citations
4,006 Views
23 Pages

In Silico and Experimental Investigation of the Biological Potential of Some Recently Developed Carprofen Derivatives

  • Florea Dumitrascu,
  • Ana-Maria Udrea,
  • Mino R. Caira,
  • Diana Camelia Nuta and ,
  • Carmen Limban,
  • Mariana Carmen Chifiriuc,
  • Marcela Popa,
  • Coralia Bleotu,
  • Anamaria Hanganu and
  • Speranta Avram
  • + 6 authors+ 1 author

23 April 2022

The efficient regioselective bromination and iodination of the nonsteroidal anti-inflammatory drug (NSAID) carprofen were achieved by using bromine and iodine monochloride in glacial acetic acid. The novel halogenated carprofen derivatives were funct...

(This article belongs to the Section Medicinal Chemistry)
  • Feature Paper
  • Short Note
  • Open Access
14 Citations
5,033 Views
4 Pages

Quercetin-3-oleate

  • Gabriele Carullo and
  • Francesca Aiello

20 July 2018

Polyphenols are well-known health promoting agents, but they have some limitations due to their spontaneous oxidation. This evidence has limited their use as drugs in recent years. In this field, several chemical modifications have been proposed to o...

(This article belongs to the Section Organic Synthesis and Biosynthesis)
  • Article
  • Open Access
12 Citations
5,131 Views
24 Pages

Valorization of Glycerol through the Enzymatic Synthesis of Acylglycerides with High Nutritional Value

  • Daniel Alberto Sánchez,
  • Gabriela Marta Tonetto and
  • María Luján Ferreira

14 January 2020

The production of specific acylglycerides from the selective esterification of glycerol is an attractive alternative for the valorization of this by-product of the biodiesel industry. In this way, products with high added value are generated, increas...

(This article belongs to the Special Issue New Glycerol Upgrading Processes)
  • Proceeding Paper
  • Open Access
828 Views
9 Pages

Synthesis of 2-Naphthyl 2-Chloroacetate and Study of Its Nucleophilic Substitution Reactions with Citric Acid

  • Ruzimurod Jurayev,
  • Azimjon Choriev,
  • Anvar Abdushukurov and
  • Ilyos Normurodov

8 December 2025

In this study, an efficient and regioselective synthetic method was developed for the preparation of 3-hydroxy-3-((2-(naphthalen-2-yloxy)-2-oxoethoxy)carbonyl)pentanedioic acid, a multifunctional ether–ester compound of potential interest for p...

(This article belongs to the Proceedings of The 4th International Electronic Conference on Processes)
  • Article
  • Open Access
52 Citations
6,952 Views
14 Pages

Efficient Catalytic Upgrading of Levulinic Acid into Alkyl Levulinates by Resin-Supported Acids and Flow Reactors

  • Valeria Trombettoni,
  • Luca Bianchi,
  • Ana Zupanic,
  • Alessandro Porciello and ,
  • Maurizio Cuomo,
  • Oriana Piermatti,
  • Assunta Marrocchi and
  • Luigi Vaccaro
  • + 3 authors+ 0 author

15 August 2017

Biomass-derived levulinic acid (LA) is an excellent substrate to obtain high-value esters that can be used as second-generation biofuels and biofuel additives. The present study focuses on the identification and definition of the key parameters cruci...

(This article belongs to the Special Issue Enabling Technologies toward Green Catalysis)
  • Review
  • Open Access
18 Citations
6,872 Views
13 Pages

31 January 2021

The application of biocatalysis and White Biotechnology tools in chemical areas concerning the production of bulk compounds and other related low-added value products (with high volumes) has been gaining importance in recent years. The expected drive...

(This article belongs to the Special Issue 25th Anniversary of Molecules—Recent Advances in Green Chemistry)
  • Article
  • Open Access
5 Citations
5,583 Views
13 Pages

8 December 2017

Lipases with unique characteristics are of value in industrial applications, especially those targeting cost-effectiveness and less downstream processes. The aims of this research were to: (i) optimize the fermentation parameters via solid state ferm...

(This article belongs to the Special Issue Lipases and Lipases Modification)
  • Article
  • Open Access
42 Citations
11,420 Views
13 Pages

Solvent-Free Lipase-Catalyzed Synthesis of Technical-Grade Sugar Esters and Evaluation of Their Physicochemical and Bioactive Properties

  • Ran Ye,
  • Douglas G. Hayes,
  • Rachel Burton,
  • Anjun Liu and ,
  • Federico M. Harte and
  • Yuemeng Wang
  • + 1 author+ 0 author

Technical-grade oleic acid esters of sucrose and fructose were prepared using solvent-free biocatalysis at 65 °C, without any downstream purification applied, and their physicochemical and bioactivity-related properties were evaluated and compared to...

(This article belongs to the Special Issue Enzyme Catalysis)
  • Article
  • Open Access
12 Citations
5,412 Views
16 Pages

An Organic Solvent-Tolerant Lipase with Both Hydrolytic and Synthetic Activities from the Oleaginous Fungus Mortierella echinosphaera

  • Alexandra Kotogán,
  • Carolina Zambrano,
  • Anita Kecskeméti,
  • Mónika Varga and ,
  • András Szekeres,
  • Tamás Papp,
  • Csaba Vágvölgyi and
  • Miklós Takó
  • + 3 authors+ 0 author

Lipase enzymes of the oleaginous fungal group Mortierella are rarely studied. However, considering that most commercial lipases are derived from filamentous fungal sources, their investigation can contribute to the cost-effective development of new b...

(This article belongs to the Special Issue Microbial Enzymes)
  • Review
  • Open Access
28 Citations
16,873 Views
27 Pages

4 December 2008

Different plant products have been subjected to detailed investigations due to their increasing importance for improving human health. Plants are sources of many groups of natural products, of which large number of new compounds has already displayed...

(This article belongs to the Section Green Chemistry)