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Barghi Lish A, Foroumadi A, Kolvari E, Safari F. Synthesis and Biological Evaluation of 12-Aryl-11-hydroxy-5,6-dihydropyrrolo[2″,1″:3',4']pyrazino[1',2':1,5]pyrrolo[2,3- d]pyridazine-8(9 H)-one Derivatives as Potential Cytotoxic Agents. ACS OMEGA 2023; 8:42212-42224. [PMID: 38024677 PMCID: PMC10653054 DOI: 10.1021/acsomega.3c04167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 10/11/2023] [Accepted: 10/16/2023] [Indexed: 12/01/2023]
Abstract
In the present paper, a facile and efficient synthetic procedure has been applied to obtain dihydrodipyrrolo[1,2-a:2',1'-c]pyrazine-2,3-dicarboxylates (5a-s), which have subsequently gone through the cyclization in the presence of hydrazine hydrate to afford 12-aryl-11-hydroxy-5,6-dihydropyrrolo[2″,1″:3',4']pyrazino[1',2':1,5]pyrrolo[2,3-d]pyridazine-8(9H)-ones (7a-q). The molecular structures of these novel compounds were extensively examined through the analysis of spectroscopic data in combination with X-ray crystallography techniques. Following that, the in vitro cytotoxic activities of all derivatives against three human cancer cell lines (Panc-1, PC3, and MDA-MB-231) were comprehensively evaluated alongside the assessment on normal human dermal fibroblast (HDF) cells using the MTT assay. Among the compounds, the 3-nitrophenyl derivative (7m) from the second series showed the best antiproliferative activity against all tested cell lines, particularly against Panc-1 cell line, (IC50 = 12.54 μM), being nearly twice as potent as the standard drug etoposide. The induction of apoptosis and sub-G1 cell cycle arrest in Panc-1 cancer cells by compound 7m was confirmed through further assessment. Moreover, the inhibition of kinases and the induction of cellular apoptosis by compound 7m in Panc-1 cancer cells were validated using the Western blotting assay.
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Affiliation(s)
- Azam Barghi Lish
- Department
of Chemistry, Semnan University, Semnan 35351-19111, Iran
| | - Alireza Foroumadi
- Department
of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran1417614411, Iran
- Drug
Design and Development Research Center, The Institute of Pharmaceutical
Sciences (TIPS), Tehran University of Medical
Sciences, Tehran 1417614411, Iran
| | - Eskandar Kolvari
- Department
of Chemistry, Semnan University, Semnan 35351-19111, Iran
| | - Fatemeh Safari
- Department
of Biology, Faculty of Science, University
of Guilan, Rasht 4193833697, Iran
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2
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Miranda-Sánchez D, Escalante CH, Andrade-Pavón D, Gómez-García O, Barrera E, Villa-Tanaca L, Delgado F, Tamariz J. Pyrrole-Based Enaminones as Building Blocks for the Synthesis of Indolizines and Pyrrolo[1,2- a]pyrazines Showing Potent Antifungal Activity. Molecules 2023; 28:7223. [PMID: 37894702 PMCID: PMC10608852 DOI: 10.3390/molecules28207223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
As a new approach, pyrrolo[1,2-a]pyrazines were synthesized through the cyclization of 2-formylpyrrole-based enaminones in the presence of ammonium acetate. The enaminones were prepared with a straightforward method, reacting the corresponding alkyl 2-(2-formyl-1H-pyrrol-1-yl)acetates, 2-(2-formyl-1H-pyrrol-1-yl)acetonitrile, and 2-(2-formyl-1H-pyrrol-1-yl)acetophenones with DMFDMA. Analogous enaminones elaborated from alkyl (E)-3-(1H-pyrrol-2-yl)acrylates were treated with a Lewis acid to afford indolizines. The antifungal activity of the series of substituted pyrroles, pyrrole-based enaminones, pyrrolo[1,2-a]pyrazines, and indolizines was evaluated on six Candida spp., including two multidrug-resistant ones. Compared to the reference drugs, most test compounds produced a more robust antifungal effect. Docking analysis suggests that the inhibition of yeast growth was probably mediated by the interaction of the compounds with the catalytic site of HMGR of the Candida species.
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Affiliation(s)
- Diter Miranda-Sánchez
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (D.M.-S.); (C.H.E.); (O.G.-G.); (E.B.); (F.D.)
| | - Carlos H. Escalante
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (D.M.-S.); (C.H.E.); (O.G.-G.); (E.B.); (F.D.)
| | - Dulce Andrade-Pavón
- Departamento de Fisiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu S/N, Mexico City 07738, Mexico;
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico;
| | - Omar Gómez-García
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (D.M.-S.); (C.H.E.); (O.G.-G.); (E.B.); (F.D.)
| | - Edson Barrera
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (D.M.-S.); (C.H.E.); (O.G.-G.); (E.B.); (F.D.)
| | - Lourdes Villa-Tanaca
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico;
| | - Francisco Delgado
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (D.M.-S.); (C.H.E.); (O.G.-G.); (E.B.); (F.D.)
| | - Joaquín Tamariz
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico; (D.M.-S.); (C.H.E.); (O.G.-G.); (E.B.); (F.D.)
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Escalante CH, Carmona-Hernández FA, Hernández-López A, Martínez-Mora EI, Delgado F, Tamariz J. Cascade synthesis of indolizines and pyrrolo[1,2- a]pyrazines from 2-formyl-1-propargylpyrroles. Org Biomol Chem 2022; 20:396-409. [PMID: 34904608 DOI: 10.1039/d1ob01839f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A straightforward synthesis of indolizines and pyrrolo[1,2-a]pyrazines was performed through a cascade condensation/cyclization/aromatization reaction of substituted 2-formyl-N-propargylpyrroles with active methylene compounds such as nitromethane, alkyl malonates, methyl cyanoacetate and malononitrile. Under basic conditions, the reaction proceeded satisfactorily to provide the corresponding 6,7-disubstituted indolizines. The condensation of the pyrrolic analogues with ammonium acetate gave rise to pyrrolo[1,2-a]pyrazines in high yields. N-Allenyl-2-formylpyrroles behaved as more reactive substrates than 2-formyl-N-propargylpyrroles, furnishing the expected indolizines in higher yields. Hence, an allenyl-containing intermediate was probably generated as the reactive species in the reaction mechanism of some N-propargyl pyrroles prior to the cyclization reaction.
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Affiliation(s)
- Carlos H Escalante
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico.
| | - Fernando A Carmona-Hernández
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico.
| | - Alberto Hernández-López
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico.
| | - Eder I Martínez-Mora
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico. .,Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila, Blvd. Venustiano Carranza e Ing. J. Cárdenas S/N, 25280 Saltillo, Coah., Mexico
| | - Francisco Delgado
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico.
| | - Joaquín Tamariz
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico.
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Lee JH, Yoon SH, Nam S, Kim I. One-pot three-component coupling access to 1,2-dihydropyrrolo[1,2-a]pyrazine-1-phosphonates: multi-functionalization of a pyrazine unit. Org Biomol Chem 2021; 19:6066-6084. [PMID: 34137765 DOI: 10.1039/d1ob00885d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new pyrrolo[1,2-a]pyrazine chemical space with a poly-substituted pyrazine unit was readily accessed by Sc(OTf)3-catalyzed one-pot three-component coupling of a pyrrole derivative, amine, and trialkylphosphite under environment-friendly conditions. The formation of multiple bonds (two C-N and one C-P) via a domino process consisting of the chemoselective Kabachnik-Fields reaction and intramolecular cyclodehydration allowed for the construction of highly functionalized pyrazines.
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Affiliation(s)
- Jeong Hwa Lee
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea.
| | - Seok Hyun Yoon
- Graduate Program of Industrial Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea
| | - Seonghyeon Nam
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea.
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea.
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Zhang G, Yu Y, He C, Wang Z, Chen Y. Palladium(II)-Catalyzed C(sp)–C(sp2) Coupling: A Direct Approach to Multi-Substituted Pyrrolo[1,2-a]pyrazines. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/s-0040-1706644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
A direct synthesis of multi-substituted pyrrolo[1,2-a]pyrazines via palladium(II)-catalyzed C(sp)–C(sp2) cascade coupling and intramolecular cyclization in the presence of ligand was developed. This reaction originates from phenylboronic acids and readily synthesized 2-carbonyl- or 2-formylpyrroloacetonitriles, and affords products in good to excellent yields for a diversity of substrates. Additionally, a possible mechanism for the transformation is proposed.
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6
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Rostami H, Shiri L. Application of
β
‐Nitrostyrene in Multicomponent Reactions for the Synthesis of Pyrrole Derivatives. ChemistrySelect 2020. [DOI: 10.1002/slct.202002563] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hedieh Rostami
- Hedieh Rostami Department of Chemistry Faculty of Science Ilam University Ilam Iran
| | - Lotfi Shiri
- Department of Chemistry Faculty of Science Ilam University Ilam Iran
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Sagitova EF, Sobenina LN, Trofimov BA. From Acylethynylpyrroles to Pyrrolo[1,2-a]pyrazines in One Step. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2020. [DOI: 10.1134/s1070428020020082] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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Rostami H, Shiri L. One-pot Multicomponent Synthesis of pyrrolo[1,2-d][1,4]benzoxazines and pyrrolo[1, 2-a]pyrazines in Water Catalyzed by Fe3O4@SiO2@L-Arginine-SA Magnetic Nanoparticles. Curr Org Synth 2020; 17:473-482. [PMID: 32003675 DOI: 10.2174/1573409916666200128163047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 04/06/2020] [Accepted: 04/08/2020] [Indexed: 11/22/2022]
Abstract
AIMS Synthesis of pyrrolo[1,2-d][1,4]benzoxazines and pyrrolo[1,2-a]pyrazines using magnetic nanoparticles. BACKGROUND One-pot, three component reaction for the synthesis of pyrrolo[1,2-d][1,4]benzoxazines and pyrrolo[1,2-a]pyrazines is reported. For the synthesis of pyrrolo[1,2-d][1,4]benzoxazines use of 2- aminophenols, dialkylacetylenedicarboxylates and β -nitrostyrene derivatives and Pyrrolo[1,2-a]pyrazines synthesized from reaction of ethylenediamine, dialkylacetylenedicarboxylates and β-nitrostyrene derivatives is discussed. MATERIALS AND METHODS 2-aminophenol (0.5 mmol) and dimethylacetylenedicarboxylate (0.5 mmol) in water (3 ml) were stirred at room temperature for 10 min. Then, β-nitrostyrene (0.5 mmol) and Fe3O4@SiO2@LArginine- SA MNPs (0.07 g) were added and the mixture was refluxed for 5 h. After completion of the reaction, the mixture was cooled to room temperature and the catalyst was separated with external magnet and product extracted with dichloromethane. More purification of products was performed by column chromatography (nhexane/ ethyl acetate 4:1). Ethylenediamine (0.6 mmol) was added to dialkylacetylenedicarboxylate (0.6 mmol) in 3 ml water and was stirred for 10 min at room temperature. Later, β -nitrostyrene (0.5 mmol) and Fe3O4@SiO2@L-Arginine-SA MNPs (0.06 g) were added to mixture reaction and refluxed for 3 h. After completion, the mixture reaction was cooled to room temperature and the catalyst was separated by an external magnet. Then, the product was extracted with dichloromethane. For more purification column chromatography was used (n-hexane/ethylacetate 1:1). RESULTS AND DISCUSSIONS In this research, we have synthesized new derivatives of pyrrolo[1,2- d][1.4]benzoxazines and pyrrolo[1,2-a]pyrazines in green conditions consisting of use of water as a green solvent and magnetic nanoparticles. CONCLUSION In this research, we have synthesized new derivatives of pyrrolo[1,2-d][1.4]benzoxazines and pyrrolo[1,2-a]pyrazines in green conditions consisting of use of water as a green solvent and magnetic nanoparticles which were easily separated from mixture with an external magnet and had the capability to be recovered and reused. Also, in this work, the yield was good and the time of reactions was low compared with prior research.
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Affiliation(s)
- Hedieh Rostami
- Department of Chemistry, Faculty of Basic Sciences, Ilam University, Ilam, Iran
| | - Lotfi Shiri
- Department of Chemistry, Faculty of Basic Sciences, Ilam University, Ilam, Iran
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9
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Huang Y, Ren D, Yu X, Zeng JL, Li X. Synthesis of Novel 1-(1,5-Diaryl-1,10b-Dihydropyrrolo- [1,2-A][1,2,4]Triazolo[3,4-C]Pyrazin-3-Yl)Ethanones Via 1,3-Dipolar Cycloaddition of Nitrilimine. Chem Heterocycl Compd (N Y) 2020. [DOI: 10.1007/s10593-020-02626-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Seo Y, Lee JH, Park SH, Namkung W, Kim I. Expansion of chemical space based on a pyrrolo[1,2-a]pyrazine core: Synthesis and its anticancer activity in prostate cancer and breast cancer cells. Eur J Med Chem 2019; 188:111988. [PMID: 31901746 DOI: 10.1016/j.ejmech.2019.111988] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 12/10/2019] [Accepted: 12/17/2019] [Indexed: 12/24/2022]
Abstract
In connection with our continued research to generate new aza-fused heteroaromatic chemical scaffolds, we developed a highly atom-economical three-component route to novel 3,4-dihydropyrrolo[1,2-a]pyrazine ring skeleton multi-functionalized on the pyrazine unit. This [4+1+1] annulation approach led us to gain access to a new N-fused bicyclic chemical space having two distinctive functional groups (heteroaryl and aroyl) in a trans manner. Investigation of anticancer activity of the synthesized compounds and their derivatives revealed that (3R*,4S*)-3-(4-bromophenyl)-4-(4-fluorobenzoyl)-2-(2-oxo-2-phenylethyl)-3,4-dihydropyrrolo[1,2-a]pyrazin-2-ium bromide (3h) has potent anticancer activity. 3h significantly inhibited cell viability in prostate cancer cells (PC-3) and breast cancer cells (MCF-7) with IC50 value of 1.18 ± 0.05 μM and 1.95 ± 0.04 μM, respectively. In addition, 3h strongly reduced cell migration in a dose dependent manner, and induced apoptosis via caspase-3 activation and cleavage of PARP in PC-3 and MCF-7 cells. Our results in this study imply that 3h can be a potential anticancer agent against prostate cancer and breast cancer.
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Affiliation(s)
- Yohan Seo
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85, Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea
| | - Jeong Hwa Lee
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85, Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea
| | - So-Hyeon Park
- Graduate Program of Industrial Pharmaceutical Science, Yonsei University, Incheon, 21983, Republic of Korea
| | - Wan Namkung
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85, Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea; Interdisciplinary Program of Integrated OMICS for Biomedical Science Graduate School, Yonsei University, Seoul, 03722, Republic of Korea.
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85, Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea.
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Orgován Z, Ferenczy GG, Keserű GM. Fragment-Based Approaches for Allosteric Metabotropic Glutamate Receptor (mGluR) Modulators. Curr Top Med Chem 2019; 19:1768-1781. [PMID: 31393248 DOI: 10.2174/1568026619666190808150039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 07/03/2019] [Accepted: 07/29/2019] [Indexed: 12/28/2022]
Abstract
Metabotropic glutamate receptors (mGluR) are members of the class C G-Protein Coupled Receptors (GPCR-s) and have eight subtypes. These receptors are responsible for a variety of functions in the central and peripheral nervous systems and their modulation has therapeutic utility in neurological and psychiatric disorders. It was previously established that selective orthosteric modulation of these receptors is challenging, and this stimulated the search for allosteric modulators. Fragment-Based Drug Discovery (FBDD) is a viable approach to find ligands binding at allosteric sites owing to their limited size and interactions. However, it was also observed that the structure-activity relationship of allosteric modulators is often sharp and inconsistent. This can be attributed to the characteristics of the allosteric binding site of mGluRs that is a water channel where ligand binding is accompanied with induced fit and interference with the water network, both playing a role in receptor activation. In this review, we summarize fragment-based drug discovery programs on mGluR allosteric modulators and their contribution identifying of new mGluR ligands with better activity and selectivity.
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Affiliation(s)
- Zoltán Orgován
- Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Hungarian Academy of Sciences, 2 Magyar Tudosok Korutja, Budapest H-1117, Hungary
| | - György G Ferenczy
- Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Hungarian Academy of Sciences, 2 Magyar Tudosok Korutja, Budapest H-1117, Hungary
| | - György M Keserű
- Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Hungarian Academy of Sciences, 2 Magyar Tudosok Korutja, Budapest H-1117, Hungary
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Rostami H, Shiri L. One-Pot Multicomponent Synthesis of Pyrrolo[1,2-a]pyrazines in Water Catalyzed by Fe3O4@SiO2-OSO3H. ChemistrySelect 2018. [DOI: 10.1002/slct.201802759] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Hedieh Rostami
- Department of Chemistry; Faculty of Basic Sciences; Ilam University; P.O. Box 69315-516 Ilam Iran
| | - Lotfi Shiri
- Department of Chemistry; Faculty of Basic Sciences; Ilam University; P.O. Box 69315-516 Ilam Iran
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13
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Berionni Berna B, Nardis S, Galloni P, Savoldelli A, Stefanelli M, Fronczek FR, Smith KM, Paolesse R. β-Pyrrolopyrazino Annulated Corroles via a Pictet–Spengler Approach. Org Lett 2016; 18:3318-21. [DOI: 10.1021/acs.orglett.6b01314] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Beatrice Berionni Berna
- Department
of Chemical Sciences and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Sara Nardis
- Department
of Chemical Sciences and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Pierluca Galloni
- Department
of Chemical Sciences and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Andrea Savoldelli
- Department
of Chemical Sciences and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Manuela Stefanelli
- Department
of Chemical Sciences and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Frank R. Fronczek
- Department
of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Kevin M. Smith
- Department
of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Roberto Paolesse
- Department
of Chemical Sciences and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy
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Yun K, Leutou AS, Rho JR, Son BW. Formoxazine, a New Pyrrolooxazine, and Two Amines from the Marine-Mudflat-Derived FungusPaecilomyces formosus. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10615] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Keumja Yun
- Department of Chemistry; Pukyong National University; Busan 608-737 Korea
| | | | - Jung-Rae Rho
- Department of Marine Biotechnology; Kunsan National University; Jeonbuk 573-701 Korea
| | - Byeng Wha Son
- Department of Chemistry; Pukyong National University; Busan 608-737 Korea
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Singh DK, Nath M. Ambient temperature synthesis of β,β′-fused nickel(ii) pyrrolo[1,2-a]pyrazinoporphyrins via a DBSA-catalyzed Pictet–Spengler approach. Org Biomol Chem 2015; 13:1836-45. [DOI: 10.1039/c4ob02370f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of novel β,β′-fused nickel(ii) pyrrolo[1,2-a]pyrazinoporphyrins is accomplished for the first time at ambient temperature via a DBSA-catalyzed Pictet–Spengler approach.
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Affiliation(s)
| | - Mahendra Nath
- Department of Chemistry
- University of Delhi
- Delhi 110 007
- India
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Nayak M, Pandey G, Batra S. Synthesis of pyrrolo[1,2-a]pyrazines and pyrazino[1,2-a]indoles by Curtius reaction in Morita–Baylis–Hillman derivatives. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.07.074] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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1-(Trifluoromethyl)-3,4-dihydropyrrolo-[1,2-a] pyrazines: synthesis and reactions with O- and N-nucleophiles. Chem Heterocycl Compd (N Y) 2011. [DOI: 10.1007/s10593-011-0663-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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19
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Khan ST, Yu P, Chantrapromma S, Afza N, Nelofar A. N-[2-(3-Methyl-1-oxo-1,2-dihydropyrrolo[1,2- a]pyrazin-2-yl)ethyl]methanesulfonamide. Acta Crystallogr Sect E Struct Rep Online 2010; 66:o1957. [PMID: 21588281 PMCID: PMC3007363 DOI: 10.1107/s1600536810026115] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Accepted: 07/02/2010] [Indexed: 11/23/2022]
Abstract
In the title compound, C11H15N3O3S, the dihedral angle between the five- and six-membered rings is 1.13 (18)°. The ethylmethanesulfonamide group is in a (+)synclinal conformation. In the crystal, intermolecular N—H⋯O and C—H⋯O hydrogen-bond interactions link molecules into zigzag ribbons parallel to the b axis. The ribbons are further connected by C—H⋯π interactions.
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20
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Khan ST, Yu P, Chantrapromma S, Guo YE, Afza N. 3-Phenyl-1H-pyrrolo[2,1-c][1,4]oxazin-1-one. Acta Crystallogr Sect E Struct Rep Online 2010; 66:o1469. [PMID: 21579537 PMCID: PMC2979495 DOI: 10.1107/s1600536810017940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2010] [Accepted: 05/14/2010] [Indexed: 12/05/2022]
Abstract
The molecule of the title compound, C13H9NO2, is slightly twisted with a dihedral angle of 4.85 (9)° between the nine-membered ring system and the phenyl ring. The nine non-H atoms of the 1H-pyrrolo[2,1-c][1,4]oxazin-1-one system are coplanar [r.m.s. deviation = 0.0122 (2) Å]. In the crystal, weak intermolecular C—H⋯O interactions link molecules into chains along [10]. The crystal studied was an inversion twin with a 0.48624 (9):0.51376 (9) domain ratio.
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21
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Khan ST, Yu P, Hua E, Ali SN, Nisa M. 3-Methyl-1H-pyrrolo[2,1-c][1,4]oxazin-1-one. Acta Crystallogr Sect E Struct Rep Online 2010; 66:o711. [PMID: 21580449 PMCID: PMC2983595 DOI: 10.1107/s1600536810006951] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2010] [Accepted: 02/23/2010] [Indexed: 11/30/2022]
Abstract
In the title molecule, C8H7NO2, all the non-H atoms lie essentially in the same plane (r.m.s. deviation = 0.019 Å) In the crystal structure, weak intermolecular C—H⋯O interactions link molecules into chains along [100]. In addition, there are π–π stacking interactions between molecules related by the c-glide plane, with alternating centroid–centroid distances of 3.434 (2) and 3.639 (2) Å.
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22
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23
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Zhou Y, Rodriguez AL, Williams R, Weaver CD, Conn PJ, Lindsley CW. Synthesis and SAR of novel, non-MPEP chemotype mGluR5 NAMs identified by functional HTS. Bioorg Med Chem Lett 2009; 19:6502-6. [PMID: 19875287 DOI: 10.1016/j.bmcl.2009.10.059] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2009] [Revised: 10/12/2009] [Accepted: 10/14/2009] [Indexed: 11/28/2022]
Abstract
This Letter describes the discovery and SAR of three novel series of mGluR5 non-competitive antagonists/negative allosteric modulators (NAMs) not based on manipulation of an MPEP/MTEP chemotype identified by a functional HTS approach. This work demonstrates fundamentally new mGluR5 NAM chemotypes with submicromolar potencies, and further examples of a mode of pharmacology 'switch' to provide PAMs with a non-MPEP scaffold.
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Affiliation(s)
- Ya Zhou
- Department of Pharmacology, Vanderbilt University Medical Center, Nashville, TN 37232, USA
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24
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Kulkarni SS, Zou MF, Cao J, Deschamps JR, Rodriguez AL, Conn PJ, Newman AH. Structure-activity relationships comparing N-(6-methylpyridin-yl)-substituted aryl amides to 2-methyl-6-(substituted-arylethynyl)pyridines or 2-methyl-4-(substituted-arylethynyl)thiazoles as novel metabotropic glutamate receptor subtype 5 antagonists. J Med Chem 2009; 52:3563-75. [PMID: 19445453 DOI: 10.1021/jm900172f] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The metabotropic glutamate receptor subtype 5 (mGluR5) has been implicated in anxiety, depression, pain, mental retardation, and addiction. The potent and selective noncompetitive mGluR5 antagonist 2-methyl-6-(phenylethynyl)pyridine (MPEP, 1) has been a critically important tool used to further elucidate the role of mGluR5 in these CNS disorders. In an effort to provide novel and structurally diverse selective mGluR5 antagonists, we previously described a set of analogues with moderate activity wherein the alkyne bond was replaced with an amide group. In the present report, extended series of both amide and alkyne-based ligands were synthesized. MGluR5 binding and functional data were obtained that identified (1) several novel alkynes with comparable affinities to 1 at mGluR5 (e.g., 10 and 20-23), but (2) most structural variations to the amide template were not well tolerated, although a few potent amides were discovered (e.g., 55 and 56). Several of these novel analogues show drug-like physical properties (e.g., cLogP range = 2-5) that support their use for in vivo investigation into the role of mGluR5 in CNS disorders.
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Affiliation(s)
- Santosh S Kulkarni
- Medicinal Chemistry Section, National Institute on Drug Abuse-Intramural Research Program, NIH, Baltimore, MD 21224, USA
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25
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Rodriguez AL, Williams R, Zhou Y, Lindsley SR, Le U, Grier MD, Weaver CD, Conn PJ, Lindsley CW. Discovery and SAR of novel mGluR5 non-competitive antagonists not based on an MPEP chemotype. Bioorg Med Chem Lett 2009; 19:3209-13. [PMID: 19443219 DOI: 10.1016/j.bmcl.2009.04.110] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2009] [Revised: 04/22/2009] [Accepted: 04/23/2009] [Indexed: 11/29/2022]
Abstract
This Letter describes the discovery and SAR of three novel series of mGluR5 non-competitive antagonists/negative allosteric modulators (NAMs) not based on manipulation of an MPEP/MTEP chemotype. This work demonstrates fundamentally new mGluR5 NAM chemotypes with submicromolar potencies, and the first example of a mode of pharmacology 'switch' to provide PAMs with a non-MPEP scaffold.
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Affiliation(s)
- Alice L Rodriguez
- Department of Pharmacology, Vanderbilt University Medical Center, Nashville, TN 37232, USA
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26
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Weill N, Rognan D. Development and Validation of a Novel Protein−Ligand Fingerprint To Mine Chemogenomic Space: Application to G Protein-Coupled Receptors and Their Ligands. J Chem Inf Model 2009; 49:1049-62. [DOI: 10.1021/ci800447g] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nathanael Weill
- Structural Chemogenomics Group, Laboratory of Therapeutic Inovation, UMR 7200 CNRS-UdS (Université de Strasbourg), 74 route du Rhin, B.P.24, F-67400 Illkirch, France
| | - Didier Rognan
- Structural Chemogenomics Group, Laboratory of Therapeutic Inovation, UMR 7200 CNRS-UdS (Université de Strasbourg), 74 route du Rhin, B.P.24, F-67400 Illkirch, France
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27
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Manlove A, Groziak MP. Chapter 6.2: Six-Membered Ring Systems: Diazines and Benzo Derivatives. PROGRESS IN HETEROCYCLIC CHEMISTRY 2009. [DOI: 10.1016/s0959-6380(09)70040-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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