Results 51 to 60 of about 174,959 (338)

Direct esterification of amides by the dimethylsulfate-mediated activation of amide C–N bonds

Communications Chemistry
Amides are important intermediates in organic chemistry and the pharmaceutical industry, but their low reactivity requires catalysts and/or severe reaction conditions for esterification.
Hongjian Qin, Zijian Han, Emmanuel Mintah Bonku, Haiguo Sun, Abdullajon Odilov, Fuqiang Zhu, Safomuddin Abduahadi, Weiliang Zhu, Jingshan Shen, Haji A. Aisa   +9 more
doaj   +1 more source

Chemistry of Bridged Lactams: Recent Developments

Molecules, 2019
Bridged lactams represent the most effective and wide-ranging method of constraining the amide bond in a non-planar conformation. A previous comprehensive review on this topic was published in 2013 (Chem. Rev. 2013, 113, 5701–5765).
Roman Szostak, Michal Szostak
doaj   +1 more source

Esters and amides of 3-R-2,8-dioxo-7,8-dihydro2H-pyrrolo[1,2-a][1,2,4]­triazino[2,3-c]quinazolin-5a(6H)-carboxylic(-propanoic) acids: synthesis and biological activity

Журнал органічної та фармацевтичної хімії, 2020
It is known that carboxyl groups bonded to aryl or hetaryl moieties play a role of the “pharmacophore” fragment in most NSAID molecules. It should be mentioned that the carboxyl group may cause the appearance of toxic effects and is characterized by ...
Viktor V. Stavytskyi, Inna S. Nosulenko, Kostiantyn I. Kandybey, Oleksii Yu. Voskoboinik, Serhii I. Kovalenko   +4 more
doaj   +1 more source

Oxidation of tertiary amine-derivatized surfaces to control protein adhesion [PDF]

, 2013
Selective oxidation of omega-tertiary amine self-assembled thiol monolayers to tertiary amine N-oxides is shown to transform the adhesion of model proteins lysozyme and fibrinogen upon them.
Biggs, Caroline I., Cooper, A. (Amy), Dobrzanska, Dorota A., Dowson, Christopher G., Evans, Stephen D., Fox, David J., Johnson, Benjamin R., Marsh, Andrew, Randev, Rajan, Stec, Helena M., Taylor, Paul C.   +10 more
core   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

Synthesis of (S)-1-(2-chloroacetyl)pyrrolidine-2-carbonitrile: A key intermediate for dipeptidyl peptidase IV inhibitors

Beilstein Journal of Organic Chemistry, 2008
An alternative and practical synthesis of (S)-1-(2-chloroacetyl)pyrrolidine-2-carbonitrile was achieved. Reaction of L-proline with chloroacetyl chloride was followed by conversion of the carboxylic acid moiety of the resulting N-acylated product into ...
Santosh K. Singh, Narendra Manne, Manojit Pal   +2 more
doaj   +1 more source

Synthesis and methane cracking activity of a silicon nitride supported vanadium nitride nanoparticle composite [PDF]

, 2017
The co-ammonolysis of V(NMe2)4 and Si(NHMe)4 with ammonia in THF and in the presence of ammonium triflate ([NH4][CF3SO3]) leads to the formation of monolithic gels.
AlShibane, Ihfaf, Hargreaves, Justin S.J., Hector, Andrew L., Levason, William, McFarlane, Andrew   +4 more
core   +1 more source

Next‐Generation Bio‐Reducible Lipids Enable Enhanced Vaccine Efficacy in Malaria and Primate Models

Advanced Functional Materials, EarlyView.
Structure–activity relationship (SAR) optimization of bio‐reducible ionizable lipids enables the development of highly effective lipid nanoparticle (LNP) mRNA vaccines. Lead LNPs show superior tolerability and antibody responses in rodents and primates, outperforming approved COVID‐19 vaccine lipids.
Ruben De Coen, Sabah Kasmi, Shrinivas Dumbre, Lies Baekens, Elise Seynaeve, Louise Van den Hauwe, Niccolò Cantini, Aello Garantoudi, Filipe Branco Madeira, Alain Marrot, Emma Tuypens, Sofie Seghers, Anna Kuchmiy, Elisabeth Brabants, Bart Vanderborght, Ine Maes, Sarah Vandenberghe, Jessica Filtjens, Alícia Gordún Peiró, Daliya Kancheva, Ayla Debraekeleer, Florence Lambolez, Emily De Lombaerde, Yong Chen, Rafael Miyazawa Martins, Pauline Formaglio, Damya Laoui, Sofie Deschoemaeker, Bruno G. De Geest, Rogerio Amino, Stefaan De Koker   +30 more
wiley   +1 more source

Enzyme‐Regulated Extended Swelling of Hydrogels for Dehiscence‐Less Tissue Expansions

Advanced Functional Materials, EarlyView.
An interpenetrating hydrogel network with swelling under regulation by enzymatic degradation (INSURED) is fabricated to avoid dehiscence. INSURED remains structurally intact post‐implantation, while HYAL injection enables control over the onset and rate of swelling.
Byung Ik Park, Dong‐yup Lee, Sungsoo Lim, JangHyuk Kim, Min‐Gyu Lee, Chang Seo Park, Hyeonuk Na, Yong Eun Cho, Yun Hyeok Lee, Junsang Doh, Jeong‐Yun Sun   +10 more
wiley   +1 more source

Synthesis of amides and esters containing furan rings under microwave-assisted conditions

Open Chemistry, 2021
In this work, we present a novel method for the synthesis of ester and amide derivatives containing furan rings (furfural derivatives) under mild synthetic conditions supported by microwave radiation.
Janczewski Łukasz, Zieliński Dariusz, Kolesińska Beata   +2 more
doaj   +1 more source