Results 161 to 170 of about 3,574 (241)

Control of Gemcitabine Activity With Blue and Red Light

open access: yesChemistry – A European Journal, EarlyView.
Treating cancer with chemotherapy is generally associated with many side effects, which can be addressed by selectively releasing the desired drugs with visible light. Sixteen new blue light‐activatable cytostatics were introduced, with the gemcitabine derivative exhibiting ideal properties.
Nils F. Kersten   +6 more
wiley   +1 more source

Cyclopropylamine‐Derived Distonic Iminium Radicals: Photoinduced Strategies in Chemo‐ and Stereo‐Selective Synthesis

open access: yesChemistry – A European Journal, EarlyView.
Cyclopropylamines have emerged as powerful photocatalytic building blocks. Upon light‐induced single‐electron oxidation, they undergo strain‐release ring opening to generate distonic iminium radicals that enable diverse transformations, including ring‐opening functionalization, formal [3 + 2] cycloadditions, radical cascades, and asymmetric bond ...
Maria Chiara Cabua   +3 more
wiley   +1 more source

C‐Terminal Functionalization Methods of Amino Acids, Peptides, and Proteins

open access: yesChemistry – A European Journal, EarlyView.
C‐terminal functionalization offers powerful routes to peptide and protein diversification, yet epimerization, hydrolysis, and selectivity remain key challenges. This Review surveys enzymatic, decarboxylative, and condensation strategies, highlighting advances toward chemo‐ and regioselective, protecting‐group‐free, atom‐efficient methods applicable to
Jay Hanssens   +3 more
wiley   +1 more source

Alkyne‐Assisted Stereospecific Skeletal Rearrangement via Nonclassical Carbocations

open access: yesChemistry – A European Journal, EarlyView.
We report stereospecific nucleophilic substitution of homopropargylic alcohols enabled by alkyne anchimeric assistance. Alcohol activation triggers formation of a nonclassical cyclopropylidenemethyl cation, allowing efficient chirality transfer to densely substituted tertiary homopropargyl fluorides.
Rajan Kumar Kharwar   +3 more
wiley   +1 more source

Gibbs energy minimization thermodynamics for CO2 capture by aqueous amines: Conservation laws, concentration variables, and parameter consistency

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
We clarify how Gibbs‐energy‐minimization models for aqueous‐amine CO2 capture fail when conservation constraints and concentration conventions are inconsistent. Exact standard‐state conversions and Reaktoro case studies show that P(CO2)‐loading fits can mask non‐unique parameters and wrong speciation, motivating complete water‐inclusive formulations ...
William R. Smith   +2 more
wiley   +1 more source

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