A variety of 2-(aminomethyl)aziridines was prepared and converted into the corresponding 1,2,3-triaminopropanes through a novel, microwave-assisted and regioselective ring opening by diethylamine in acetonitrile. Antiplasmodial assays revealed antimalarial activity for 2-[(1,2,4-triazol-1-yl)methyl]aziridines and 2-(N,N-diethylaminomethyl)aziridines, as well as for the corresponding 1-(diethylamino)propanes obtained through ring opening, pointing to the relevance of both the 2-(aminomethyl)aziridine and the 1,2,3-triaminopropane unit as novel antimalarial pharmacophores.
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http://dx.doi.org/10.1016/j.ejmech.2010.11.037 | DOI Listing |
Org Biomol Chem
January 2025
Jiangxi Provincial Key Laboratory of Functional Crystalline Materials Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi Province, P.R. China.
The multi-component ring-opening reactions of cyclic ethers offer an efficient strategy for the rapid introduction of multiple functional groups and the construction of complex molecular architectures. Despite the minimal ring strain in five- and six-membered rings presenting a significant challenge for ring-opening, advancements have been made. Traditional acid-catalyzed pathways have been complemented by a novel approach involving carbene-induced oxonium intermediate formation, which has emerged in recent years and expanded the selectivity of ring-opening reactions.
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
Department of Polymer Chemistry and Technology, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia.
Polyethers are versatile materials extensively used in advanced as well as everyday applications. The incorporation of primary amine functionality into polyethers is particularly attractive due to its well-established coupling chemistries. However, the inherent nucleophilicity of amine group poses a challenge in the anionic ring-opening polymerization (ROP) of epoxides and requires the use of robust protecting groups that can withstand the harsh conditions of ROP without triggering undesirable side reactions.
View Article and Find Full Text PDFNanoscale
January 2025
Ludwig-Maximilians-University, Department of Pharmacy, Pharmaceutical Technology and Biopharmaceutics, Butenandtstraße 5-13, Munich, 81377, Germany.
CRISPR-Cas9 has emerged as a highly effective and customizable genome editing tool, holding significant promise for the treatment of KRAS mutations in lung cancer. In this study, we introduce a novel micelleplex, named C14-PEI, designed to co-deliver Cas9 mRNA and sgRNA efficiently to excise the mutated KRAS allele in lung cancer cells. C14-PEI is synthesised from 1,2-epoxytetradecane and branched PEI 600 Da a ring-opening reaction.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
Southern University of Science and Technology, Chemistry, 1088 Xueyuandadao, 518055, Shenzhen, CHINA.
Dioxiranes and their heavier chalcogen analogs have long been recognized as pivotal reagents and intermediates in synthetic chemistry, while trioxetanes have largely remained theoretical constructs. In this work, we present the synthesis of neutral, isoelectronic aluminum/chalcogen analogs of dioxiranes and trioxetanes, specifically aluminadiselenirane, aluminaditellurirane, aluminatriselenetane, aluminatritelluretane, and a mixed Se/Te analog of aluminatrichalcogenetane. These compounds, featuring strained AlCh2 and AlCh3 ring (Ch = Se, Te), exhibit significant polarization between the aluminum and chalcogen components.
View Article and Find Full Text PDFACS Macro Lett
January 2025
Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China.
Efficient synthesis of cyclic polymers remains a frontier challenge. We report here that macromolecular transesterification during a pseudoblock copolymerization process can be utilized for such a purpose. Organobase-catalyzed ring-opening alternating copolymerization of 3,4-dihydrocoumarin and epoxide is conducted with four-armed poly(ethylene oxide) (PEO) as a macroinitiator.
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