Rhodium-catalyzed regio- and enantioselective coupling of tetrazoles with allenes are reported. Asymmetric construction of tertiary and quaternary allylic C-N bonds were achieved using a Rh(I)/JoSPOphos catalyst. This method permits the atom-economic synthesis of various valuable N(2)-allylic tetrazoles.
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http://dx.doi.org/10.1039/c5cc04203h | DOI Listing |
Proc Natl Acad Sci U S A
February 2025
SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea.
The design of organic-peptide hybrids has the potential to combine our vast knowledge of protein design with small molecule engineering to create hybrid structures with complex functions. Here, we describe the computational design of a photoswitchable Ca-binding organic-peptide hybrid. The designed molecule, designated Ca-binding switch (CaBS), combines an EF-hand motif from classical Ca-binding proteins such as calmodulin with a photoswitchable group that can be reversibly isomerized between a spiropyran (SP) and merocyanine (MC) state in response to different wavelengths of light.
View Article and Find Full Text PDFHuman Kv1.3, encoded by , is expressed in neuronal and immune cells. Its impaired expression or function produces chronic inflammatory disease and autoimmune disorders, the severity of which correlates with Kv1.
View Article and Find Full Text PDFJ Comput Chem
January 2025
Regional Center of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Olomouc, Czech Republic.
Doxorubicin (DOX) is a widely used chemotherapeutic agent known for intercalating into DNA. However, the exact modes of DOX interactions with various DNA structures remain unclear. Using molecular dynamics (MD) simulations, we explored DOX interactions with DNA duplexes (dsDNA), G-quadruplex, and nucleosome.
View Article and Find Full Text PDFChemistry
January 2025
Université de Rennes 1, Chemistry, Equipe CORINT, Institut des Sciences Chimiques de Rennes, Université de Rennes 1 - UMR 6226 CNRS, Bâtiment 10A, Bureau 158, Avenue du Général Leclerc, 35042, Rennes, FRANCE.
Capozzi's groundbreaking work in 1982 introduced a fascinating reaction involving highly reactive tertiary aliphatic cations and silylated alkynes. This reaction provided an innovative solution to the challenge of coupling a fully substituted tertiary aliphatic fragment with an alkyne moiety. Building upon Capozzi's pioneering efforts, we started an extensive exploration of reaction conditions to expand the initial scope of this reaction.
View Article and Find Full Text PDFSci Total Environ
February 2025
Department of Civil Engineering and Architecture, University of Catania, Viale A. Doria 6, Catania, Italy. Electronic address:
This study investigated the applicability of a protein-like fluorescence sensor for wastewater quality monitoring. Several wastewater matrices, including raw, primary, secondary and tertiary effluents from three different wastewater treatment plants were used. Furthermore, the sensor was tested for the monitoring of quaternary effluent in a pilot scale plant installed downstream of a water reuse facility.
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