Disulfide Metathesis via Sulfur…Iodine Interaction and Photoswitchability

2021 ◽  
Author(s):  
Ashis Mathuri ◽  
Milan Pramanik ◽  
Amarchand Parida ◽  
Prasenjit Mal
Keyword(s):  
Combinatorial Chemistry ◽  
Dynamic Combinatorial Chemistry

The idea of constitutional dynamic chemistry (CDC) and dynamic combinatorial chemistry (DCC) is widespread in literature using the chemistry of disulfides. The synthesis of unsymmetrical diaryl disulfides is challenging due...

Formation and Trapping of the Thermodynamically Unfavoured Inverted-Hemicucurbit[6]uril

2019 ◽  
Author(s):  
Elena Prigorchenko ◽  
Sandra Kaabel ◽  
Triin Narva ◽  
Anastassia Baškir ◽  
Maria Fomitšenko ◽  
...  
Keyword(s):  
Complex Formation ◽  
Combinatorial Chemistry ◽  
Trifluoroacetic Acid ◽  
Chloride Anion ◽  
Binding Affinities ◽  
Dynamic Covalent Chemistry ◽  
Reaction Selectivity ◽  
Low Concentration ◽  
Dynamic Combinatorial Chemistry ◽  
First Time

Amplification of a thermodynamically unfavoured macrocyclic product through the directed shift of the equilibrium between dynamic covalent chemistry library members is difficult to achieve. We show for the first time that during condensation of formaldehyde and <i>cis</i>-<i>N,N'</i>-cyclohexa-1,2-diylurea formation of <i>inverted-cis</i>-cyclohexanohemicucurbit[6]uril (<i>i-cis</i>-cycHC[6]) can be induced at the expense of thermodynamically favoured <i>cis</i>-cyclohexanohemicucurbit[6]uril (<i>cis</i>-cycHC[6]). The formation of <i>i-cis-</i>cycHC[6] is enhanced in low concentration of the templating chloride anion and suppressed in excess of this template. We found that reaction selectivity is governed by the solution-based template-aided dynamic combinatorial chemistry and continuous removal of the formed cycHC[6] macrocycles from the equilibrating solution by precipitation. Notably, the <i>i-cis</i>-cycHC[6] was isolated with 33% yield. Different binding affinities of three diastereomeric <i>i-cis</i>-, <i>cis</i>-cycHC[6] and their chiral isomer (<i>R,R</i>)-cycHC[6] for trifluoroacetic acid demonstrate the influence of macrocycle geometry on complex formation.

scholarly journals Adventures in molecular recognition. The ins and outs of templating

2000 ◽  
Vol 72 (12) ◽  
pp. 2265-2274 ◽  
Author(s):  
Jeremy K. M. Sanders
Keyword(s):  
Molecular Recognition ◽  
Combinatorial Chemistry ◽  
Biological Systems ◽  
Design Approach ◽  
Supramolecular Systems ◽  
Disulfide Exchange ◽  
Dynamic Combinatorial Chemistry ◽  
Evolutionary Features ◽  
Selection Approach ◽  
Porphyrin Dimers

Two different approaches are described for the creation of supramolecular systems potentially capable of recognition and catalysis. Using the design approach, we have been able to accelerate and influence two different Diels­Alder reactions within the cavities of porphyrin dimers and trimers; this is templating from the outside inwards. The selection approach is a synthetic chemical attempt to capture some of the key evolutionary features of biological systems: dynamic combinatorial chemistry is used to create equilibrating mixtures of potential receptors, and then a template is used to select and amplify the desired system. Five potential reactions for such dynamic chemistry are discussed: base-catalyzed transesterification, hydrazone exchange, disulfide exchange, alkene metathesis, and Pd-catalyzed allyl exchange, and preliminary templating results (inside outwards) are presented.

Structure-Based Design of Inhibitors of the Aspartic Protease Endothiapepsin by Exploiting Dynamic Combinatorial Chemistry

2014 ◽  
Vol 53 (12) ◽  
pp. 3259-3263 ◽  
Author(s):  
Milon Mondal ◽  
Nedyalka Radeva ◽  
Helene Köster ◽  
Ahyoung Park ◽  
Constantinos Potamitis ◽  
...  
Keyword(s):  
Combinatorial Chemistry ◽  
Aspartic Protease ◽  
Dynamic Combinatorial Chemistry

Dynamic combinatorial chemistry with diselenides and disulfides in water

2014 ◽  
Vol 50 (28) ◽  
pp. 3716-3718 ◽  
Author(s):  
Brian Rasmussen ◽  
Anne Sørensen ◽  
Henrik Gotfredsen ◽  
Michael Pittelkow
Keyword(s):  
Combinatorial Chemistry ◽  
Reversible Reaction ◽  
Dynamic Combinatorial Chemistry

Diselenide exchange is introduced as a reversible reaction in dynamic combinatorial chemistry in water at physiological pH.

scholarly journals Enzyme-mediated dynamic combinatorial chemistry allows out-of-equilibrium template-directed synthesis of macrocyclic oligosaccharides

2019 ◽  
Vol 10 (43) ◽  
pp. 9981-9987 ◽  
Author(s):  
Dennis Larsen ◽  
Sophie R. Beeren
Keyword(s):  
Dynamic System ◽  
Combinatorial Chemistry ◽  
Self Assembly ◽  
Dynamic Combinatorial Chemistry ◽  
Directed Synthesis

Artificial templates can control out-of-equilibrium self-assembly in an enzyme-mediated dynamic system of cyclodextrins, even allowing access to products not selected in Nature.

scholarly journals Titelbild: Live‐Cell‐Templated Dynamic Combinatorial Chemistry (Angew. Chem. 39/2020)

2020 ◽  
Vol 132 (39) ◽  
pp. 16949-16949
Author(s):  
Daniel Carbajo ◽  
Yolanda Pérez ◽  
Jordi Bujons ◽  
Ignacio Alfonso
Keyword(s):  
Combinatorial Chemistry ◽  
Live Cell ◽  
Dynamic Combinatorial Chemistry
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