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Piloty's acid derivative with improved nitroxyl-releasing characteristics
Kazuyuki Aizawa1, Hidehiko Nakagawa, Kazuya Matsuo
1Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi 467-8603, Japan.
Bioorganic & Medicinal Chemistry Letters
|March 16, 2013
Summary
Nitroxyl (HNO) shows therapeutic potential, particularly in cardiovascular health. Researchers developed novel Piloty's acid derivatives, with N-Hydroxy-2-nitrobenzenesulfonamide (17) emerging as a highly effective HNO donor for biological studies.
Area of Science:
- Medicinal Chemistry
- Cardiovascular Pharmacology
- Nitric Oxide Chemistry
Background:
- Nitroxyl (HNO), the reduced form of nitric oxide (NO), exhibits unique biological activities.
- HNO-releasing agents are being explored for therapeutic applications, especially in cardiovascular diseases.
- A limited number of effective HNO donors are available for physiological conditions.
Purpose of the Study:
- To synthesize and evaluate novel Piloty's acid (PA) derivatives as potential HNO donors.
- To identify efficient HNO-releasing compounds for use under physiological conditions.
- To explore the structure-activity relationship of PA derivatives concerning HNO release.
Main Methods:
- Synthesis of a series of Piloty's acid derivatives.
- Evaluation of HNO-releasing activity under physiological conditions.
- Comparative analysis of synthesized compounds, including a lead compound (2-bromo-N-hydroxybenzenesulfonamide) and novel derivatives.
Main Results:
- N-Hydroxy-2-nitrobenzenesulfonamide (compound 17) demonstrated the highest HNO-releasing efficiency among the tested PA derivatives.
- The electronic and steric properties of compound 17 are suggested to contribute to its enhanced HNO-donating capability.
- Compound 17 proved more effective than the lead compound (2).
Conclusions:
- Compound 17 is a potent and efficient HNO donor under physiological conditions.
- The synthesized PA derivatives offer promising tools for biological research involving nitroxyl.
- Further investigation into compound 17's therapeutic potential is warranted.
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