Results 31 to 40 of about 12,849 (199)

Site-Specific Fluorogenic Protein Labelling Agent for Bioconjugation

Biomolecules, 2020
Many clinically relevant therapeutic agents are formed from the conjugation of small molecules to biomolecules through conjugating linkers. In this study, two novel conjugating linkers were prepared, comprising a central coumarin core, functionalized ...
Kelvin K. Tsao, Ann C. Lee, Karl É. Racine, Jeffrey W. Keillor   +3 more
doaj   +1 more source

Safirinium Fluorescent “Click” Molecular Probes: Synthesis, CuAAC Reactions, and Microscopic Imaging

Molecules
Fluorescent labeling utilizing Cu(I)-catalyzed azide–alkyne cycloaddition reactions (CuAAC) is among the leading applications of the “click” chemistry strategy.
Patryk Kasza, Przemysław W. Szafrański, Joanna Fedorowicz, Faustyna Krzysztofiak, Krzysztof Pociecha, Katarzyna Wójcik-Pszczoła, Paulina Koczurkiewicz-Adamczyk, Mariusz Kępczynski, Jarosław Sączewski, Paweł Zajdel, Marek Cegła   +10 more
doaj   +1 more source

Microwave-assisted three-component domino reaction: Synthesis of indolodiazepinotriazoles

Beilstein Journal of Organic Chemistry, 2013
A microwave-assisted three-component protocol involving N-1 alkylation of 2-alkynylindoles with epichlorohydrin, ring opening of the epoxide with sodium azide, and an intramolecular Huisgen azide–internal alkyne 1,3-dipolar cycloaddition domino sequence ...
Rajesh K. Arigela, Sudhir K. Sharma, Brijesh Kumar, Bijoy Kundu   +3 more
doaj   +1 more source

Structural Determinants of Alkyne Reactivity in Copper-Catalyzed Azide-Alkyne Cycloadditions

Molecules, 2016
This work represents our initial effort in identifying azide/alkyne pairs for optimal reactivity in copper-catalyzed azide-alkyne cycloaddition (CuAAC) reactions.
Xiaoguang Zhang, Peiye Liu, Lei Zhu
doaj   +1 more source

N-[7-Chloro-4-[4-(phenoxymethyl)-1H-1,2,3-triazol-1-yl]quinoline]-acetamide

Molbank, 2021
The 1,2,3-triazole is a well-known biologically active pharmacophore constructed by the copper-catalyzed azide–alkyne cycloaddition. We herein reported the synthesis of 4-amino-7-chloro-based [1,2,3]-triazole hybrids via Cu(I)-catalyzed Huisgen 1,3 ...
Paolo Coghi, Jerome P. L. Ng, Ali Adnan Nasim, Vincent Kam Wai Wong   +3 more
doaj   +1 more source

Emerging experimental and computational methods for studying redox‐regulated structural transitions

FEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass, Dana Reichmann, Gábor Erdős   +2 more
wiley   +1 more source

IMPDH inhibition enhances cytarabine efficacy in SAMHD1‐expressing leukaemia cells via guanine nucleotide depletion

Molecular Oncology, EarlyView.
Cytarabine is a key therapy for acute myeloid leukaemia (AML), but its efficacy is limited by the dNTPase SAMHD1, which hydrolyses its active metabolite. Screening nucleotide biosynthesis inhibitors revealed that IMPDH inhibitors selectively sensitise SAMHD1‐proficient AML cells to cytarabine.
Miriam Yagüe‐Capilla, Christopher Dirks, Caroline Eiden, Sonja K. Fesenmayer, Femke M. Hormann, Yolande Klootsema, Ingrid Lilienthal, Si Min Zhang, Nikolas Herold, Sean G. Rudd   +9 more
wiley   +1 more source

Covalent Attachment of Aggregation-Induced Emission Molecules to the Surface of Ultrasmall Gold Nanoparticles to Enhance Cell Penetration

Molecules, 2022
Three different alkyne-terminated aggregation-induced emission molecules based on a para-substituted di-thioether were attached to the surface of ultrasmall gold nanoparticles (2 nm) by copper-catalyzed azide–alkyne cycloaddition (click chemistry).
Kai Klein, Matthias Hayduk, Sebastian Kollenda, Marco Schmiedtchen, Jens Voskuhl, Matthias Epple   +5 more
doaj   +1 more source

Reversible Tuning of Multiple Molecular Kinking for Stem Cell Regulation In Vivo

Advanced Functional Materials, EarlyView.
In this work, we introduce the novel concept of background component‐free “multiple kinks” material platform composed solely of liganded multiple kink‐bearing molecules as a strategy for dynamic biomaterial design. Tri‐kink molecules enable effective near‐infrared light‐triggered ligand masking and visible light‐triggered ligand exposure, thereby ...
Kanghyeon Kim, Jeongah Shin, Chowon Kim, Honghwan Choi, Dahee Kim, Sungkyu Lee, Choongmo Kang, Hyunsik Hong, Taehoon Ha, Nayeon Kang, Jungyeon Rhi, Ramar Thangam, Yuri Kim, Jeongyun Heo, Cheol Hwan Kwak, Jangsun Hwang, Daun Jeong, Rasoul Moradi, Sunghoon Hur, Hyun‐Cheol Song, Hyun‐Do Jung, Min Jae Lee, Rongqin Huang, Pooyan Makvandi, Yun Suk Huh, Ji Hye Choi, Wenguo Cui, Sehoon Kim, Heemin Kang   +28 more
wiley   +1 more source

Innovative Peptide Bioconjugation Chemistry with Radionuclides: Beyond Classical Click Chemistry

Pharmaceuticals
Background: The incorporation of radionuclides into peptides and larger biomolecules requires efficient and sometimes biorthogonal reaction conditions, to which click chemistry provides a convenient approach.
Samantha Leier, Frank Wuest
doaj   +1 more source