Exploring the scope of DBU-promoted amidations of 7-methoxycarbonylpterin

Rational design and synthesis of pyrazole derivatives as potential SARS-CoV-2 Mpro inhibitors: An integrated approach merging combinatorial chemistry, molecular docking, and deep learning

The global impact of SARS-CoV-2 has highlighted the urgent need for novel antiviral therapies. This study integrates combinatorial chemistry, molecular docking, and deep learning to design, evaluate and synthesize new pyrazole derivatives as potential inhibitors of the SARS-CoV-2 main protease (Mpro). A library of over 60,000 pyrazole-based structures was generated through scaffold decoration to enhance chemical diversity. Virtual screening employed molecular docking (ChemPLP scoring) and deep learning (DeepPurpose), with consensus ranking to identify top candidates. Binding free energy calculations refined the selection, revealing critical structural features such as tryptamine and N-phenyl fragments for Mpro binding. High-temperature solvent-free amidation allowed the synthesis of a selected derivative. Final compounds demonstrated favorable drug-likeness properties based on Lipinski's and Veber's rules. This work highlights the integration of computational and synthetic strategies to accelerate the discovery of Mpro inhibitors and provides a framework for future antiviral development.

Comparative routes to 7-carboxymethyl-pterin: A useful medicinal chemistry building block

Pterins, such as folate and biopterin, and their derivatives hold significant importance given their biological relevance, as well as the numerous pterin-based inhibitors developed for targeting various biological targets. For this reason, pterins can be viewed as a privileged scaffold, as the discovery of new pterin analogs gives rise to a vast array of potential drug candidates. 7-carboxymethyl-pterin (7-CMP) represents a useful scaffold for the rapid generation of structurally diverse pterin amides and has been a key building block in medicinal chemistry. In an effort to facilitate rapid generation of this pterin scaffold, we have explored multiple routes towards 7-CMP to assess the most efficient method of generation. Methods were evaluated based on yield, regioselectivity, reaction time, and hazardous reaction conditions. This work can aide in the synthesis and discovery of new pterin-based drug candidates.

Step-growth polymerisation of alkyl acrylates via concomitant oxa-Michael and transesterification reactions

An auto-tandem catalytic approach towards the preparation of poly(ester–ether)s from simple alkyl acrylates and diols is introduced.