98%
921
2 minutes
20
Herein, we report a facile and versatile copper-catalyzed protocol for the chemo- and regioselective synthesis of highly substituted 2-(trifluoromethyl)pyrroles from readily available starting materials. This one-pot cascade reaction of CFCHN, nitrile, and nitroalkene proceeds efficiently under mild conditions, enabling access to a broad spectrum of 2-(trifluoromethyl)pyrroles. Furthermore, the utility of this method is demonstrated by the synthesis of a series of highly substituted pyrroles bearing both trifluoromethyl and cyano groups.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1021/acs.joc.5c01067 | DOI Listing |
Biosens Bioelectron
September 2025
Department of Biological Sciences, Faculty of Science, National University of Singapore, 117543, Singapore; Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore; Precision Medicine Translational Research Programme (TRP), Yong Loo Lin School
DNAzymes possessing kinase-like activities have long held theoretical promise, yet their practical implementation has remained significantly limited. Notably, DNAzyme kinase 1 (DK1), discovered over two decades ago, exhibits a unique self-phosphorylation capability upon encountering specific substrates like ATP, but its broad-based and programmable applications have not yet been fully realized. In this study, we innovatively couple DK1's autophosphorylation mechanism with the PfAgo to establish a novel programmable cascade sensing platform named RASTEN (Robust pfAgo-based Strategy for POC Testing Non-nucleic Acid and Nucleic Acid).
View Article and Find Full Text PDFCarbohydr Polym
November 2025
College of Life Sciences, Henan Agricultural University, Zhengzhou 450046, China. Electronic address:
Artificial starch production from bioreactors is very promising in terms of amylose's broad applications as well as the possibility of addressing food shortage. We previously built an in vitro cellulose-to-starch pathway, synthesizing amylose from non-food cellulose. A challenge of this pathway lies in its low amylose yield due to the fact that only cellobiose in cellulose hydrolysate can be converted into amylose while cellodextrins with a degree of polymerization (DP) ≥ 3 cannot be utilized.
View Article and Find Full Text PDFChemSusChem
September 2025
Organic Chemistry Institute, University of Münster, Corrensstraße 36, 48149, Münster, Germany.
A three-step, one-pot, sequential cascade starting from simple feedstocks to increase complexity toward value-added chiral synthetic building blocks is reported. This is achieved by precisely integrating organic photocatalysis and noncovalent organocatalysis, often operating at dissimilar conditions and reaction media. In particular, this strategy is used to enable the direct transformation of readily available benzylic substrates, such as methylbenzenes, benzyl alcohols, or amines, into enantioenriched α-aminonitriles by benzylic CH photooxidation to their corresponding aldehydes, followed by in situ imine formation and final asymmetric organocatalytic Strecker reaction.
View Article and Find Full Text PDFOrg Biomol Chem
September 2025
Organic Synthesis Laboratory, P. G. Department of Chemistry, Berhampur University, Bhanja Bihar, Odisha, 760007, India.
Herein, we report a visible light-mediated, metal- and photocatalyst-free, green and sustainable synthesis of biologically relevant functionalized benzopyrans by a one-pot, pseudo-multicomponent reaction at room temperature. The notable features of the present protocol include a green and renewable energy source, high yields, easy isolation of the products without performing column chromatography, metal- and photocatalyst-free conditions, room-temperature synthesis, broad substrate scope, environmental friendliness and gram-scale synthesis of the products. In the present study, the benzopyrans are also subjected to molecular docking, which revealed that some benzopyrans are promising potential inhibitors of key nsPs in both Chikungunya and Zika viruses.
View Article and Find Full Text PDFInt J Biol Macromol
August 2025
Anhui Key Laboratory of Modern Biomanufacturing and School of Life Sciences, Anhui University, Hefei 230601, China. Electronic address:
UDP-β-L-arabinose (UDP-Ara) serves as a key arabinose donor for plant cell-wall polysaccharides, arabinogalactan proteins, extensins, glycopeptide hormones, and diverse flavonoids and saponins, yet its scalable synthesis has remained challenging. Here, we present an efficient, fully enzymatic pathway for UDP-Ara production. An arabinokinase from Acidobacteriota (AbGHMP) selectively converts L-Ara to L-Ara-1-phosphate, with its substrate-bound crystal structure offering the first molecular insights into arabinokinase specificity.
View Article and Find Full Text PDF