scholarly journals New applications of dynamic combinatorial chemistry to medicinal chemistry

2019 ◽  
Author(s):  
Alwin Hartman
2019 ◽  
Author(s):  
Elena Prigorchenko ◽  
Sandra Kaabel ◽  
Triin Narva ◽  
Anastassia Baškir ◽  
Maria Fomitšenko ◽  
...  

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.


2020 ◽  
Vol 16 ◽  
Author(s):  
Vitor F. Ferreira ◽  
Alcione S. de Carvalho ◽  
Patricia G. Ferreira ◽  
Carolina G. S. Lima ◽  
Fernando de C. da Silva

Background: Several quinones are on the pharmaceutical market as drugs for the treatment of several diseases. Objective: The aim of this review was to provide an overview on the quinones that have become drugs for several therapeutic applications. Method: We have comprehensively and critically discussed all the information available in the literature about quinonebased drugs. Results: In this review, the various aspects of the chemistry and biochemistry of these drugs are highlighted, including their repositioning, drug combination and their new uses. Conclusion: The number of studies related to quinone drugs for different pharmaceutical uses shows that the interest in new applications still increasing in recent years.


2000 ◽  
Vol 72 (12) ◽  
pp. 2265-2274 ◽  
Author(s):  
Jeremy K. M. Sanders

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.


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

2007 ◽  
Vol 60 (11) ◽  
pp. 795 ◽  
Author(s):  
Nicos A. Petasis

The present essay offers an overview of the latest developments in the chemistry of organoboron compounds. The unique structural characteristics and the versatile reactivity profile of organoboron compounds continue to expand their roles in several areas of chemistry. A growing number of boron-mediated reactions have become vital tools for synthetic chemistry, particularly in asymmetric synthesis, metal-catalyzed processes, acid catalysis, and multicomponent reactions. As a result, boronic acids and related molecules have now evolved as major players in synthetic and medicinal chemistry. Moreover, their remnant electrophilic reactivity, even under physiological conditions, has allowed their incorporation in a growing number of bioactive molecules, including bortezomib, a clinically approved anticancer agent. Finally, the sensitive and selective binding of boronic acids to diols and carbohydrates has led to the development of a growing number of novel chemosensors for the detection, quantification, and imaging of glucose and other carbohydrates. There is no doubt that the chemistry of organoboron compounds will continue to expand into new discoveries and new applications in several fields of science.


2014 ◽  
Vol 50 (28) ◽  
pp. 3716-3718 ◽  
Author(s):  
Brian Rasmussen ◽  
Anne Sørensen ◽  
Henrik Gotfredsen ◽  
Michael Pittelkow

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


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