Results 241 to 250 of about 632,210 (313)

Integrating Multifunctionalities into a Three‐Dimensional Covalent Organic Framework for Efficient CO2 Photoreduction

Angewandte Chemie International Edition, Accepted Article.
Fabrication of highly efficient photocatalysts for CO2 conversion is still challenging. Herein, integrating nitrogen‐rich organic cages and the photoactive porphyrin moieties together, a three‐dimensional (3D) covalent organic framework (COF), Cage‐PorCOF, is successfully synthesized.
Ke Cheng, Shuo Kong, Jungeng Wang, Qiurong Wang, Shiling Yuan, Pei-Zhou Li, Yanli Zhao   +6 more
wiley   +1 more source

Quantum Dot Applications Using Kinetic Data: A Promising Approach for Enhanced Analytical Determinations. [PDF]

Biosensors (Basel)
Castro RC, Páscoa RNMJ, Ribeiro DSM, Santos JLM.   +3 more
europepmc   +1 more source

Supramolecular Recognition of a DNA Four‐Way Junction by an M2L4 Metallo‐cage, Inspired by a Simulation‐Guided Design Approach

Angewandte Chemie International Edition, Accepted Article.
DNA four‐way junctions (4WJs) play an important biological role in DNA repair and recombination, and viral regulation, and are attractive therapeutic targets. Compounds that recognise the junction structure are rare; in this work, we describe cationic metallo‐supramolecular M2L4 cages as a new type of 4WJ binder with nanomolar affinities. A combination
Samuel J. Dettmer, Hugo D. Williams, Richard Napier, Joseph M. Beames, Steffan Walker-Griffiths, Timothy D. Craggs, Michael J. Hannon   +6 more
wiley   +1 more source

A novel LC-TQ-MS/MS method for quantifying mefenamic acid-NDSRI (N-nitroso drug substance-related impurity) in mefenamic acid tablet and pediatric suspension dosage forms: a comparative study with a cost-effective white, green, and blue UPLC method. [PDF]

RSC Adv
Nakka S, Katari NK, Muchakayala SK, Jonnalagadda SB, Manabolu Surya SB.   +4 more
europepmc   +1 more source

Structural Basis of Sequential Enantioselective Epoxidation by a Flavin‐Dependent Monooxygenase in Lasalocid A Biosynthesis

Angewandte Chemie International Edition, Accepted Article.
Polyether polyketides are a structurally diverse group of natural products known for their antimicrobial and antiproliferative activities. Lasalocid A is a canonical natural polyether produced by the soil bacterium Streptomyces lasalocidi. In lasalocid A biosynthesis, a polyene polyketide intermediate is converted to a bisepoxide by the flavin ...
Chu-Young Kim, Qian Wang, Yaming Deng, Dayan Viera, Xiaopeng Liu, Ning Liu, Yulu Hu, Xiangdong Hu, Hao Wei, Quan Zhou, Ting Lan, Wei He, Xi Chen   +12 more
wiley   +1 more source

Development and validation of a stability-indicating HPLC method for the simultaneous determination of anticoccidial drugs in veterinary formulations: greenness and whiteness assessment. [PDF]

Sci Rep
Fares MY, Aziz SEA, Khalil IA, Demerdash AOE, Habib NM.   +4 more
europepmc   +1 more source

Annulated Radical Cations with a C4E2‐Core (E = P, As, Sb): Stable Pnictogen Analogs of Elusive Aryl Radical Anions of Birch Reduction Reactions

Angewandte Chemie International Edition, Accepted Article.
The benzene radical anion (C6H6)●–, possessing a 7π‐electron count, is a crucial intermediate in the Birch reduction and has been extensively studied both experimentally and theoretically. Herein, we report the tricyclic pnictogen radical cations [(ADC)E]2[B], [2‐E][B] (ADC = PhC{N(Dipp)C}2; Dipp = 2,6‐iPr2C6H3; E = P, As, Sb; [B] = [B1] = B(C6F5)4 or [
Henric Steffenfauseweh, Yury V. Vishnevskiy, Beate Neumann, Hans-Georg Stammler Stammler, Demi Snabilié, Bas de de Bruin, Rajendra Ghadwal   +6 more
wiley   +1 more source

Functional Ambidexterity of an Ancient Nucleic Acid‐Binding Domain

Angewandte Chemie International Edition, Accepted Article.
The helix‐hairpin‐helix (HhH) motif is an ancient and ubiquitous nucleic acid‐binding element that has emerged as a model system for studying the evolution of dsDNA‐binding domains from simple peptides that phase separate with RNA. We analyzed the entire putative evolutionary trajectory of the HhH motif – from a flexible peptide to a folded domain ...
Liam Longo, Orit Weil-Ktorza, Segev Naveh-Tassa, Yael Fridmann-Sirkis, Dragana Despotović, Kesava Phaneendra Cherukuri, Tatsuya Corlett, Yaakov Levy, Norman Metanis   +8 more
wiley   +1 more source

Eco-sustainable chromatographic method for the determination of favipiravir and nitazoxanide for COVID-19: application to human plasma. [PDF]

BMC Chem
Ahmed AB, Abdelrahman MM, Edrees FH.
europepmc   +1 more source