Progresses in the pursuit of aldose reductase inhibitors: the structure-based lead optimization step
Anna Ramunno1, Sandro Cosconati, Stefania Sartini
1Dipartimento di Scienze Farmaceutiche, Università di Salerno, Via Ponte Don Melillo 11c, 84084 Fisciano, Italy.
Abstract:
Aldose reductase (ALR2) is a crucial enzyme in the development of the major complications of diabetes mellitus. Very recently it has been demonstrated that the ARL2 inhibitor, fidarestat, significantly prevents inflammatory signals (TNF-α, LPS) that cause cancer (colon, breast, prostate and lung), metastasis, asthma, and other inflammatory diseases. Currently, fidarestat is in phase III clinical trial for diabetic neuropathy and was found to be safe. Thus the finding of novel, potent ARL2 inhibitors is today more than in the past in great demand as they can pave the way for a novel therapeutic approach for a number of diseases besides the diabetes. Herein, starting from the virtual screening-derived ALR2 inhibitor S12728 (1), a rational receptor-based lead optimization has been undertaken. The design and synthetic efforts here reported led to the discovery of several new compounds endowed with low micromolar/submicromolar activities.
Insights
Novel aldose reductase (ALR2) inhibitors were developed to treat diabetic complications and inflammatory diseases. These new compounds show promising low micromolar/submicromolar activities, offering potential therapeutic avenues beyond diabetes.
Area of Science:
- Biochemistry
- Medicinal Chemistry
- Pharmacology
Background:
- Aldose reductase (ALR2) is implicated in diabetic complications.
- ALR2 inhibitors, like fidarestat, show potential against inflammatory diseases and cancer.
- Fidarestat is in Phase III trials for diabetic neuropathy and is safe.
Purpose of the Study:
- To discover novel, potent aldose reductase (ALR2) inhibitors.
- To explore new therapeutic strategies for diabetes and inflammatory conditions.
- To optimize a virtual screening-derived ALR2 inhibitor (S12728).
Main Methods:
- Rational receptor-based lead optimization.
- Chemical synthesis of new compounds.
- In vitro activity assessment of synthesized compounds.
Main Results:
- Several new ALR2 inhibitors were designed and synthesized.
- Compounds demonstrated low micromolar and submicromolar activities.
- Optimization efforts yielded potent inhibitory compounds.
Conclusions:
- Novel ALR2 inhibitors with significant potency were discovered.
- These compounds offer potential for treating diabetic complications and inflammatory diseases.
- The findings support the development of new therapeutic approaches.
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