Results 11 to 20 of about 1,288,650 (300)

Cu-catalyzed Asymmetric Alkylation for Chiral Unnatural α-Substituted α-Amino Acids of Phallotoxins [PDF]

open access: yes, 2023
Asymmetric alkylation is one of the most important methods for synthesizing chiral unnatural α-substituted α-amino acids. Herein, We reported an asymmetric alkylation of tert-butyl glycinate Schiff base catalyzed by copper/(4S,2R)-tBu-Phosferrox ...
Yang, Wang   +6 more
core   +2 more sources

Electrochemical Synthesis of Unnatural Amino Acids Embedding 5- and 6-Membered Heteroaromatics [PDF]

open access: yes, 2023
Using a commercially available potentiostat, the electrochemical synthesis of unnatural amino acids bearing heteroaromatics on the lateral chain has been accomplished.
Paolo, Ronchi   +5 more
core   +2 more sources

Genetic incorporation of unnatural amino acids into proteins in Mycobacterium tuberculosis. [PDF]

open access: yesPLoS ONE, 2010
New tools are needed to study the intracellular pathogen Mycobacterium tuberculosis (Mtb), the causative agent of tuberculosis (TB), to facilitate new drug discovery and vaccine development.
Feng Wang   +4 more
doaj   +1 more source

Light Regulation of Enzyme Allostery through Photo-responsive Unnatural Amino Acids [PDF]

open access: yesCell Chemical Biology, 2019
Astrid Bruckmann   +2 more
exaly   +2 more sources

Asymmetric Synthesis of Unnatural α-Amino Acids through Photoredox-Mediated C–O Bond Activation of Aliphatic Alcohols [PDF]

open access: yes, 2023
An efficient protocol for the asymmetric synthesis of unnatural amino acids is realized through photoredox-mediated C–O bond activation of oxalate esters derived from aliphatic alcohols as the radical precursors.
Andrey, Shatskiy   +7 more
core   +2 more sources

Synthesis of Isothiocyanates Using DMT/NMM/TsO− as a New Desulfurization Reagent

open access: yesMolecules, 2021
Thirty-three alkyl and aryl isothiocyanates, as well as isothiocyanate derivatives from esters of coded amino acids and from esters of unnatural amino acids (6-aminocaproic, 4-(aminomethyl)benzoic, and tranexamic acids), were synthesized with ...
Łukasz Janczewski   +2 more
doaj   +1 more source

Stereoselective Synthesis of Unnatural α-Amino Acids through Photoredox Catalysis [PDF]

open access: yes, 2020
A protocol for stereoselective C-radical addition to a chiral glyoxylate-derived sulfinyl imine was developed through visible light-promoted photoredox catalysis, providing a convenient method for the synthesis of unnatural α-amino acids.
Andrey, Shatskiy   +5 more
core   +2 more sources

Substrates incorporating unnatural amino acids are separately detectable for chymotrypsin and subtilisin with similar specificity

open access: yesResults in Chemistry, 2023
Protease specificity depends on the three-dimensional structure and sequence of the protease, and each protease plays a different role. Chymotrypsin and subtilisin have similar specificity for recognizing aromatic and hydrophobic amino acid residues ...
Yuuki Yamawaki, Tamaki Kato
doaj   +1 more source

Photoinduced β-fragmentation of aliphatic alcohol derivatives for forging C–C bonds

open access: yesNature Communications, 2022
Transformations of alcohols, which are ubiquitous in chemistry and are native functionalities in many natural products and bioactive molecules, are cornerstones of organic synthesis.
Yiman Gao   +6 more
doaj   +1 more source

Electrochemical Synthesis of Unnatural Amino Acids Embedding 5- and 6‑Membered Heteroaromatics [PDF]

open access: yesACS Omega
Elena Bombonato   +6 more
doaj   +2 more sources

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