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Teli P, Soni S, Teli S, Agarwal S. Unlocking Diversity: From Simple to Cutting-Edge Synthetic Methodologies of Bis(indolyl)methanes. Top Curr Chem (Cham) 2024; 382:8. [PMID: 38403746 DOI: 10.1007/s41061-024-00454-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 01/31/2024] [Indexed: 02/27/2024]
Abstract
From a synthetic perspective, bis(indolyl)methanes have undergone extensive investigation over the past two to three decades owing to their remarkable pharmacological activities, encompassing anticancer, antimicrobial, antioxidant, and antiinflammatory properties. These highly desirable attributes have spurred significant interest within the scientific community, leading to the development of various synthetic strategies that are not only more efficient but also ecofriendly. This synthesis-based literature review delves into the advancements made in the past 5 years, focusing on the synthesis of symmetrical as well as unsymmetrical bis(indolyl)methanes. The review encompasses a wide array of methods, ranging from well-established techniques to more unconventional and innovative approaches. Furthermore, it highlights the exploration of various substrates, encompassing readily available chemicals such as indole, aldehydes/ketones, indolyl methanols, etc. as well as the use of some specific compounds as starting materials to achieve the synthesis of this invaluable molecule. By encapsulating the latest developments in this field, this review provides insights into the expanding horizons of bis(indolyl)methane synthesis.
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Affiliation(s)
- Pankaj Teli
- Department of Chemistry, Synthetic Organic Chemistry Laboratory, MLSU, Udaipur, Rajasthan, India
| | - Shivani Soni
- Department of Chemistry, Synthetic Organic Chemistry Laboratory, MLSU, Udaipur, Rajasthan, India
| | - Sunita Teli
- Department of Chemistry, Synthetic Organic Chemistry Laboratory, MLSU, Udaipur, Rajasthan, India
| | - Shikha Agarwal
- Department of Chemistry, Synthetic Organic Chemistry Laboratory, MLSU, Udaipur, Rajasthan, India.
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Mahardhika AB, Ressemann A, Kremers SE, Gregório Castanheira MS, Schoeder CT, Müller CE, Pillaiyar T. Design, synthesis, and structure-activity relationships of diindolylmethane derivatives as cannabinoid CB 2 receptor agonists. Arch Pharm (Weinheim) 2023; 356:e2200493. [PMID: 36437108 DOI: 10.1002/ardp.202200493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/31/2022] [Accepted: 11/03/2022] [Indexed: 11/29/2022]
Abstract
3,3'-Diindolylmethane (DIM), a natural product-derived compound formed upon ingestion of cruciferous vegetables, was recently described to act as a partial agonist of the anti-inflammatory cannabinoid (CB) receptor subtype CB2 . In the present study, we synthesized and evaluated a series of DIM derivatives and determined their affinities for human CB receptor subtypes in radioligand binding studies. Potent compounds were additionally evaluated in functional cAMP accumulation and β-arrestin recruitment assays. Small substituents in the 4-position of both indole rings of DIM were beneficial for high CB2 receptor affinity and efficacy. Di-(4-cyano-1H-indol-3-yl)methane (46, PSB-19837, EC50 : cAMP, 0.0144 µM, 95% efficacy compared to the full standard agonist CP55,940; β-arrestin, 0.0149 µM, 67% efficacy) was the most potent CB2 receptor agonist of the present series. Di-(4-bromo-1H-indol-3-yl)methane (44, PSB-19571) showed higher potency in β-arrestin (EC50 0.0450 µM, 61% efficacy) than in cAMP accumulation assays (EC50 0.509 µM, 85% efficacy) while 3-((1H-indol-3-yl)methyl)-4-methyl-1H-indole (149, PSB-18691) displayed a 19-fold bias for the G protein pathway (EC50 : cAMP, 0.0652 µM; β-arrestin, 1.08 µM). DIM and its analogs act as allosteric CB2 receptor agonists. These potent CB2 receptor agonists have potential as novel drugs for the treatment of inflammatory diseases.
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Affiliation(s)
- Andhika B Mahardhika
- Department of Pharmaceutical & Medicinal Chemistry, PharmaCenter Bonn, Pharmaceutical Institute, University of Bonn, Bonn, Germany.,Research Training Group 1873, University of Bonn, Bonn, Germany
| | - Anastasiia Ressemann
- Department of Pharmaceutical & Medicinal Chemistry, PharmaCenter Bonn, Pharmaceutical Institute, University of Bonn, Bonn, Germany
| | - Sarah E Kremers
- Department of Pharmaceutical & Medicinal Chemistry, PharmaCenter Bonn, Pharmaceutical Institute, University of Bonn, Bonn, Germany
| | - Mariana S Gregório Castanheira
- Department of Pharmaceutical & Medicinal Chemistry, PharmaCenter Bonn, Pharmaceutical Institute, University of Bonn, Bonn, Germany
| | - Clara T Schoeder
- Department of Pharmaceutical & Medicinal Chemistry, PharmaCenter Bonn, Pharmaceutical Institute, University of Bonn, Bonn, Germany.,Research Training Group 1873, University of Bonn, Bonn, Germany
| | - Christa E Müller
- Department of Pharmaceutical & Medicinal Chemistry, PharmaCenter Bonn, Pharmaceutical Institute, University of Bonn, Bonn, Germany.,Research Training Group 1873, University of Bonn, Bonn, Germany
| | - Thanigaimalai Pillaiyar
- Department of Pharmaceutical & Medicinal Chemistry, PharmaCenter Bonn, Pharmaceutical Institute, University of Bonn, Bonn, Germany.,Pharmaceutical/Medicinal Chemistry and Tübingen Center for Academic Drug Discovery, Institute of Pharmacy, Eberhard Karls University, Tübingen, Germany
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Zhang W, Vadlakonda S, Wu M, Chintareddy V, Vogeti LN, Juarez L, Muppa S, Parker C, Kellogg-Yelder D, Williams J, Polach K, Chen X, Raman K, Babu Y, Kotian P. Discovery and Optimization of Orally Bioavailable and Potent Plasma Kallikrein Inhibitors Bearing a Quaternary Carbon. Bioorg Med Chem 2022; 73:117035. [DOI: 10.1016/j.bmc.2022.117035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 09/21/2022] [Accepted: 09/22/2022] [Indexed: 11/02/2022]
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Flury P, Eppler O, Schollmeyer D, Laufer S, Pillaiyar T. 2,2,2-Trifluoroethanol-mediated hydroarylation of fluorinated alkynes with indoles: Application to diindolylmethanes. Arch Pharm (Weinheim) 2022; 355:e2100488. [PMID: 35467043 DOI: 10.1002/ardp.202100488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 03/28/2022] [Accepted: 03/30/2022] [Indexed: 12/16/2022]
Abstract
A new mild and practically simple alkyne hydroarylation protocol for the synthesis of 3-(indol-3-yl)-3-(trifluoromethyl)acrylic acid esters by the reaction of indole derivatives with ethyl/methyl 4,4,4-trifluoro-3-(indol-3-yl)but-2-enoates in trifluoroethanol was developed. This method has the following advantages: no catalyst, atom economy, high yields, broad substrate scope, and large-scale synthesis. The potential application of this protocol was further demonstrated by the synthesis of a variety of CF3 -substituted synthons and a new class of (un)symmetrical 3,3'-diindolylmethanes with a quaternary carbon core that might be biologically active.
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Affiliation(s)
- Philipp Flury
- Institute of Pharmacy, Pharmaceutical/Medicinal Chemistry and Tübingen Center for Academic Drug Discovery, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Olga Eppler
- Institute of Pharmacy, Pharmaceutical/Medicinal Chemistry and Tübingen Center for Academic Drug Discovery, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Dieter Schollmeyer
- Department of Chemistry, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Stefan Laufer
- Institute of Pharmacy, Pharmaceutical/Medicinal Chemistry and Tübingen Center for Academic Drug Discovery, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Thanigaimalai Pillaiyar
- Institute of Pharmacy, Pharmaceutical/Medicinal Chemistry and Tübingen Center for Academic Drug Discovery, Eberhard Karls University Tübingen, Tübingen, Germany
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Modemann DJ, Maharadhika A, Yamoune S, Kreyenschmidt AK, Maaß F, Kremers S, Breunig C, Sahlmann CO, Bucerius JA, Stalke D, Wiltfang J, Bouter Y, Müller CE, Bouter C, Meller B. Development of high-affinity fluorinated ligands for cannabinoid subtype 2 receptor, and in vitro evaluation of a radioactive tracer for imaging. Eur J Med Chem 2022; 232:114138. [DOI: 10.1016/j.ejmech.2022.114138] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 01/12/2022] [Accepted: 01/14/2022] [Indexed: 11/04/2022]
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