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Baska F, Bozó É, Szeleczky Z, Szántó G, Vukics K, Szakács Z, Domány-Kovács K, Kurkó D, Vass E, Thán M, Vastag M, Temesvári K, Lévai S, Halász AS, Szondiné Kordás K, Román V, Greiner I, Bata I. Discovery and Characterization of RGH-122, a Potent, Selective, and Orally Bioavailable V1a Receptor Antagonist. J Med Chem 2024; 67:643-673. [PMID: 38165765 DOI: 10.1021/acs.jmedchem.3c01868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
The V1a receptor is a major contributor in mediating the social and emotional effects of arginine-vasopressin (AVP); therefore it represents a promising target in the treatment of several neuropsychiatric conditions. The aim of this research was to design and synthesize novel and selective V1a antagonists with improved in vitro and in vivo profiles. Through optimization and detailed SAR studies, we developed low nanomolar antagonists, and further characterizations led to the discovery of the clinical candidate compound 43 (RGH-122). The CNS activity of the compound was determined in a 3-chamber social preference test of autism in which RGH-122 successfully enhanced social preference with the lowest effective dose of 1.5 mg/kg.
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Affiliation(s)
- Ferenc Baska
- Gedeon Richter Plc, PO Box 27, Budapest H-1475, Hungary
| | - Éva Bozó
- Gedeon Richter Plc, PO Box 27, Budapest H-1475, Hungary
| | | | - Gábor Szántó
- Gedeon Richter Plc, PO Box 27, Budapest H-1475, Hungary
| | | | | | | | - Dalma Kurkó
- Gedeon Richter Plc, PO Box 27, Budapest H-1475, Hungary
| | - Elemér Vass
- Institute of Chemistry, Eötvös Loránd University, Pázmány Péter sétány 1/A, Budapest H-1117, Hungary
| | - Márta Thán
- Gedeon Richter Plc, PO Box 27, Budapest H-1475, Hungary
| | - Mónika Vastag
- Gedeon Richter Plc, PO Box 27, Budapest H-1475, Hungary
| | | | - Sándor Lévai
- Gedeon Richter Plc, PO Box 27, Budapest H-1475, Hungary
| | | | | | - Viktor Román
- Gedeon Richter Plc, PO Box 27, Budapest H-1475, Hungary
| | | | - Imre Bata
- Gedeon Richter Plc, PO Box 27, Budapest H-1475, Hungary
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Subbaiah MAM, Meanwell NA. Bioisosteres of the Phenyl Ring: Recent Strategic Applications in Lead Optimization and Drug Design. J Med Chem 2021; 64:14046-14128. [PMID: 34591488 DOI: 10.1021/acs.jmedchem.1c01215] [Citation(s) in RCA: 168] [Impact Index Per Article: 56.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The benzene moiety is the most prevalent ring system in marketed drugs, underscoring its historic popularity in drug design either as a pharmacophore or as a scaffold that projects pharmacophoric elements. However, introspective analyses of medicinal chemistry practices at the beginning of the 21st century highlighted the indiscriminate deployment of phenyl rings as an important contributor to the poor physicochemical properties of advanced molecules, which limited their prospects of being developed into effective drugs. This Perspective deliberates on the design and applications of bioisosteric replacements for a phenyl ring that have provided practical solutions to a range of developability problems frequently encountered in lead optimization campaigns. While the effect of phenyl ring replacements on compound properties is contextual in nature, bioisosteric substitution can lead to enhanced potency, solubility, and metabolic stability while reducing lipophilicity, plasma protein binding, phospholipidosis potential, and inhibition of cytochrome P450 enzymes and the hERG channel.
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Affiliation(s)
- Murugaiah A M Subbaiah
- Department of Medicinal Chemistry, Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore, Karnataka 560099, India
| | - Nicholas A Meanwell
- Department of Small Molecule Drug Discovery, Bristol Myers Squibb Research and Early Development, P.O. Box 4000, Princeton, New Jersey 08543-4000, United States
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Szeleczky Z, Szakács Z, Bozó É, Baska F, Vukics K, Lévai S, Temesvári K, Vass E, Béni Z, Krámos B, Magdó I, Szántay C, Kóti J, Domány-Kovács K, Greiner I, Bata I. Synthesis and Characterization of New V 1A Antagonist Compounds: The Separation of Four Atropisomeric Stereoisomers. J Med Chem 2021; 64:10445-10468. [PMID: 34255509 DOI: 10.1021/acs.jmedchem.1c00863] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A new class of selective vasopressin receptor 1A (V1A) antagonists was identified, where "methyl-scan" was performed around the benzene ring of the 5-hydroxy-triazolobenzazepine core. This led to the synthesis of two 10-methyl derivatives, each possessing a chiral axis and a stereogenic center. The four atropisomeric stereoisomers (involving two enantiomer pairs and atropisomeric diastereomers) could be successfully isolated and spectroscopically characterized. According to the in vitro pharmacological profiles of the compounds, the human V1A receptor has a strong preference toward the isomers having an aR axial chirality, the most active isomer being the aR,5S isomer. Furthermore, the structure-activity relationships obtained for the isomers and for the newly synthesized analogues could be tentatively explained by an in silico study.
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Affiliation(s)
- Zsolt Szeleczky
- Gedeon Richter Plc., 19-21 Gyömrői út, Budapest 1103, Hungary
| | - Zoltán Szakács
- Gedeon Richter Plc., 19-21 Gyömrői út, Budapest 1103, Hungary
| | - Éva Bozó
- Gedeon Richter Plc., 19-21 Gyömrői út, Budapest 1103, Hungary
| | - Ferenc Baska
- Gedeon Richter Plc., 19-21 Gyömrői út, Budapest 1103, Hungary
| | | | - Sándor Lévai
- Gedeon Richter Plc., 19-21 Gyömrői út, Budapest 1103, Hungary
| | | | - Elemér Vass
- Institute of Chemistry, Eötvös Loránd University, Pázmány Péter sétány 1/A, Budapest H-1117, Hungary
| | - Zoltán Béni
- Gedeon Richter Plc., 19-21 Gyömrői út, Budapest 1103, Hungary
| | - Balázs Krámos
- Gedeon Richter Plc., 19-21 Gyömrői út, Budapest 1103, Hungary
| | - Ildikó Magdó
- Gedeon Richter Plc., 19-21 Gyömrői út, Budapest 1103, Hungary
| | - Csaba Szántay
- Gedeon Richter Plc., 19-21 Gyömrői út, Budapest 1103, Hungary
| | - János Kóti
- Gedeon Richter Plc., 19-21 Gyömrői út, Budapest 1103, Hungary
| | | | - István Greiner
- Gedeon Richter Plc., 19-21 Gyömrői út, Budapest 1103, Hungary
| | - Imre Bata
- Gedeon Richter Plc., 19-21 Gyömrői út, Budapest 1103, Hungary
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