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Crocetti L, Guerrini G, Melani F, Vergelli C, Giovannoni MP. 4,5-Dihydro-5-Oxo-Pyrazolo[1,5-a]Thieno[2,3-c]Pyrimidine: A Novel Scaffold Containing Thiophene Ring. Chemical Reactivity and In Silico Studies to Predict the Profile to GABAA Receptor Subtype. Molecules 2023; 28:molecules28073054. [PMID: 37049816 PMCID: PMC10095790 DOI: 10.3390/molecules28073054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023] Open
Abstract
The isosteric replacement of the benzene with thiophene ring is a chemical modification widely applied in medicinal chemistry. Several drugs containing the thiophene ring are marketed for treating various pathologies (osteoporosis, peripheral artery disorder, psychosis, anxiety and convulsion). Taking into account this evidence and as a continuation of our study in the GABAA receptor modulators field, we designed and synthesized new compounds containing the thiophene ring with 4,5-dihydro-5-oxo-pyrazolo[1,5-a]thieno[2,3-c]pyrimidine and pyrazolo[1,5-a]thieno[2,3-c] pyrimidine scaffold. Moreover, these cores, never reported in the literature, are isosteres of pyrazolo[1,5-a]quinazolines (PQ), previously published by us as GABAAR subtype ligands. We introduced in the new scaffold those functions and groups (esters, ketones, alpha/beta-thiophene) that in our PQ derivatives were responsible for the activity, and at the same time, we have extensively investigated the reactivity of the new nucleus regarding the alkylation, reduction, halogenation and hydrolyses. On the six final designed compounds (12c–f, 22a,b) molecular docking and dynamic simulation studies have been performed. The analysis of dynamic simulation, applying our reported model ‘Proximity Frequencies’, collocates with high probability 12c, 22b, in the agonist class towards α1β2γ2-GABAAR.
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Ivanov SM, Mironovich LM, Rodinovskaya LA, Shestopalov AM. Synthesis of new 4-oxo-1,2,3,4-tetrahydropyrazolo[5,1-с][1,2,4]triazines. Russ Chem Bull 2018. [DOI: 10.1007/s11172-018-2244-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Ivanov SM, Shestopalov AM. Interaction of Fused 1,2,4-Triazinone with Diborane/Oxidation: A New Route for the Synthesis of Partially Saturated and Aromatic Pyrazolo[5,1-c
][1,2,4]triazines. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3275] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sergey M. Ivanov
- N.D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; Leninsky Prospekt, 47 Moscow 119991 Russia
| | - Anatoliy M. Shestopalov
- N.D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; Leninsky Prospekt, 47 Moscow 119991 Russia
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Mohammadi Ziarani G, Lashgari N, Mostofi M, Mahdavi M. Synthesis, Reaction and Biological Activity of Pyrazolo[5,1-c][1,2,4]benzotriazine 5-Oxides. HETEROCYCLES 2018. [DOI: 10.3987/rev-18-893] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Guerrini G, Ciciani G, Crocetti L, Daniele S, Ghelardini C, Giovannoni MP, Iacovone A, Di Cesare Mannelli L, Martini C, Vergelli C. Identification of a New Pyrazolo[1,5-a]quinazoline Ligand Highly Affine to γ-Aminobutyric Type A (GABAA) Receptor Subtype with Anxiolytic-Like and Antihyperalgesic Activity. J Med Chem 2017; 60:9691-9702. [DOI: 10.1021/acs.jmedchem.7b01151] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Gabriella Guerrini
- Dipartimento
NEUROFARBA, Sezione Farmaceutica e Nutraceutica, Università degli Studi di Firenze, Via Ugo Schiff 6, Sesto
Fiorentino, Firenze 50019, Italy
| | - Giovanna Ciciani
- Dipartimento
NEUROFARBA, Sezione Farmaceutica e Nutraceutica, Università degli Studi di Firenze, Via Ugo Schiff 6, Sesto
Fiorentino, Firenze 50019, Italy
| | - Letizia Crocetti
- Dipartimento
NEUROFARBA, Sezione Farmaceutica e Nutraceutica, Università degli Studi di Firenze, Via Ugo Schiff 6, Sesto
Fiorentino, Firenze 50019, Italy
| | - Simona Daniele
- Dipartimento
FARMACIA, Università degli Studi di Pisa, Pisa56126, Italy
| | - Carla Ghelardini
- Dipartimento
NEUROFARBA, Sezione Farmacologia, Università degli Studi di Firenze, Sesto
Fiorentino, Firenze 50019, Italy
| | - Maria Paola Giovannoni
- Dipartimento
NEUROFARBA, Sezione Farmaceutica e Nutraceutica, Università degli Studi di Firenze, Via Ugo Schiff 6, Sesto
Fiorentino, Firenze 50019, Italy
| | - Antonella Iacovone
- Dipartimento
NEUROFARBA, Sezione Farmaceutica e Nutraceutica, Università degli Studi di Firenze, Via Ugo Schiff 6, Sesto
Fiorentino, Firenze 50019, Italy
| | - Lorenzo Di Cesare Mannelli
- Dipartimento
NEUROFARBA, Sezione Farmacologia, Università degli Studi di Firenze, Sesto
Fiorentino, Firenze 50019, Italy
| | - Claudia Martini
- Dipartimento
FARMACIA, Università degli Studi di Pisa, Pisa56126, Italy
| | - Claudia Vergelli
- Dipartimento
NEUROFARBA, Sezione Farmaceutica e Nutraceutica, Università degli Studi di Firenze, Via Ugo Schiff 6, Sesto
Fiorentino, Firenze 50019, Italy
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