Abstract
Selective inhibitors of neuronal nitric oxide synthase (nNOS) are regarded as valuable and powerful agents with therapeutic potential for the treatment of chronic neurodegenerative pathologies and human melanoma. Here, we describe a novel hybrid strategy that combines the pharmacokinetically promising thiophene-2-carboximidamide fragment and structural features of our previously reported potent and selective aminopyridine inhibitors. Two inhibitors, 13 and 14, show low nanomolar inhibitory potency (Ki = 5 nM for nNOS) and good isoform selectivities (nNOS over eNOS [440- and 540-fold, respectively] and over iNOS [260- and 340-fold, respectively]). The crystal structures of these nNOS-inhibitor complexes reveal a new hot spot that explains the selectivity of 14 and why converting the secondary to tertiary amine leads to enhanced selectivity. More importantly, these compounds are the first highly potent and selective nNOS inhibitory agents that exhibit excellent in vitro efficacy in melanoma cell lines.
Original language | English (US) |
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Pages (from-to) | 686-700 |
Number of pages | 15 |
Journal | Journal of Medicinal Chemistry |
Volume | 57 |
Issue number | 3 |
DOIs | |
State | Published - Feb 13 2014 |
ASJC Scopus subject areas
- Molecular Medicine
- Drug Discovery
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Dive into the research topics of 'Potent and selective double-headed thiophene-2-carboximidamide inhibitors of neuronal nitric oxide synthase for the treatment of melanoma'. Together they form a unique fingerprint.Datasets
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Structure of neuronal nitric oxide synthase heme domain in complex with N-(4-(2-((3-(thiophene-2-carboximidamido)benzyl)amino)ethyl)phenyl)thiophene-2-carboximidamide
Huang, H. (Contributor), Li, H. (Contributor), Yang, S. (Contributor), Chreifi, G. (Contributor), Martásek, P. (Contributor), Roman, L. J. (Contributor), Meyskens, F. L. (Contributor), Poulos, T. L. (Contributor) & Silverman, R. B. (Contributor), Protein Data Bank (PDB), Feb 12 2014
DOI: 10.2210/pdb4KCL/pdb, https://www.wwpdb.org/pdb?id=pdb_00004kcl
Dataset
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Structure of bovine endothelial nitric oxide synthase heme domain in complex with N-(3-((ethyl(3-fluorophenethyl)amino)methyl)phenyl)thiophene-2-carboximidamide
Huang, H. (Contributor), Li, H. (Contributor), Yang, S. (Contributor), Chreifi, G. (Contributor), Martásek, P. (Contributor), Roman, L. J. (Contributor), Meyskens, F. L. (Contributor), Poulos, T. L. (Contributor) & Silverman, R. B. (Contributor), Protein Data Bank (PDB), Feb 12 2014
DOI: 10.2210/pdb4KCS/pdb, https://www.wwpdb.org/pdb?id=pdb_00004kcs
Dataset
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Structure of bovine endothelial nitric oxide synthase heme domain in complex with N-(3-(((3-fluorophenethyl)amino)methyl)phenyl)thiophene-2-carboximidamide
Huang, H. (Contributor), Li, H. (Contributor), Yang, S. (Contributor), Chreifi, G. (Contributor), Martásek, P. (Contributor), Roman, L. J. (Contributor), Meyskens, F. L. (Contributor), Poulos, T. L. (Contributor) & Silverman, R. B. (Contributor), Protein Data Bank (PDB), Feb 12 2014
DOI: 10.2210/pdb4KCR/pdb, https://www.wwpdb.org/pdb?id=pdb_00004kcr
Dataset