1
|
Mondal K, Paul S, Halder P, Talukdar V, Das P. Iodine-Catalyzed Regioselective C-3 Chalcogenation of 7-Azaindoles: Access to Benzothiophene-Fused 7-Azaindole Analogs. J Org Chem 2024; 89:17042-17058. [PMID: 39527407 DOI: 10.1021/acs.joc.4c01237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2024]
Abstract
An iodine-catalyzed method has been reported for efficient regioselective C-3 sulfenylation, selenylation, thiocyanation, and selenocyanation of NH-free 7-azaindoles using thiophenols, diselenides, potassium thiocyanates, and selenocyanates, respectively. This approach showcases high efficiency and remarkable versatility, facilitating the synthesis of diverse chalcogenated 7-azaindoles. Additionally, the sulfenylated derivatives have been further diversified to generate a new array of benzothiophene-fused 7-azaindole cores of pharmaceutical interest. The synthetic flexibility of this protocol has been highlighted through the gram-scale synthesis of sulfonylated 7-azaindole-based bioactive 5-HT6 receptor agonists.
Collapse
Affiliation(s)
- Krishanu Mondal
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India
| | - Siddhartha Paul
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India
| | - Pallabi Halder
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India
| | - Vishal Talukdar
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India
| | - Parthasarathi Das
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India
| |
Collapse
|
2
|
Deb M, Singh H, Manhas D, Nandi U, Guru SK, Das P. Development of di-arylated 1,2,4-triazole-based derivatives as therapeutic agents against breast cancer: synthesis and biological evaluation. RSC Med Chem 2024; 15:3097-3113. [PMID: 39309354 PMCID: PMC11411613 DOI: 10.1039/d4md00285g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Accepted: 07/20/2024] [Indexed: 09/25/2024] Open
Abstract
The synthesis, anticancer activity, and metabolic stability of di-arylated 1,2,4-triazole molecules have been reported. Utilizing an efficient programmed arylation technique which starts from commercially available 3-bromo-1H-1,2,4-triazole, a series of therapeutic agents have been synthesized and screened against three human breast cancer cell lines, MDA-MB-231, MCF-7, and ZR-75-1, via an in vitro growth inhibition assay. At 10 μM concentration, 4k, 4m, 4q, and 4t have displayed good anticancer potency in the MCF-7 cell line, among which 4q has shown the best efficacy (IC50 = 4.8 μM). Mechanistic investigations of 4q have indicated the elevation of the pro-apoptotic BAX protein in the malignant cells along with mitochondrial outer membrane permeabilization which are hallmarks of apoptosis. Further metabolic stability studies in diverse liver microsomes have provided insights into the favorable pharmacokinetic properties of 4q in humans, establishing it as a promising lead compound of this series that deserves further investigation.
Collapse
Affiliation(s)
- Mousumi Deb
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM) Dhanbad-826004 India
| | - Hoshiyar Singh
- Department of Biological Sciences, NIPER-Hyderabad-500037 India
| | - Diksha Manhas
- Pharmacology Division, CSIR-Indian Institute of Integrative Medicine Jammu-180001 India
| | - Utpal Nandi
- Pharmacology Division, CSIR-Indian Institute of Integrative Medicine Jammu-180001 India
| | - Santosh K Guru
- Department of Biological Sciences, NIPER-Hyderabad-500037 India
| | - Parthasarathi Das
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM) Dhanbad-826004 India
| |
Collapse
|
3
|
Talukdar V, Mondal K, Halder P, Das P. Ullmann-Type N-, S-, and O-Arylation Using a Well-Defined 7-Azaindole- N-oxide (7-AINO)-Based Copper(II) Catalyst: Scope and Application to Drug Synthesis. J Org Chem 2024; 89:7455-7471. [PMID: 38773695 DOI: 10.1021/acs.joc.3c02852] [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: 05/24/2024]
Abstract
An air-stable, robust, and well-defined copper(II)-7-azaindole-N-oxide-based catalyst [Cu2II(7-AINO)4] (abbreviated as Cu(II)-7-AINO) has been demonstrated as an efficient catalyst for various Ullmann-type coupling reactions. This easily prepared and cost-effective catalyst facilitates the arylation and heteroarylation of diverse N-, S-, and O-nucleophiles, including azoles, aminoazoles, (hetero)arylthiols, and phenols. Notably, they also exhibit substantial compatibility with a wide range of functional groups. Furthermore, the catalyst demonstrates significant selectivity for -NH sites of aminoazoles and -SH sites of aminothiophenols over -NH2 sites in both cases, enhancing its versatility. Exploiting the catalyst's chemo- and regioselective properties, we have successfully demonstrated the applicability of our methodology in synthesizing various drug molecules. Specifically, Epirizole analogue, Nilotinib, and Vortioxetine were successfully synthesized using our protocol.
Collapse
Affiliation(s)
- Vishal Talukdar
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India
| | - Krishanu Mondal
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India
| | - Pallabi Halder
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India
| | - Parthasarathi Das
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India
| |
Collapse
|
4
|
Talukdar V, Mondal K, Kumar Dhaked D, Das P. CuI/DMAP-Catalyzed Oxidative Alkynylation of 7-Azaindoles: Synthetic Scope and Mechanistic Studies. Chem Asian J 2024:e202300987. [PMID: 38258444 DOI: 10.1002/asia.202300987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/10/2024] [Accepted: 01/22/2024] [Indexed: 01/24/2024]
Abstract
An efficient and practical method for the N-alkynylation of 7-azaindoles has been established by using CuI/DMAP catalytic system at room temperature and in open air. This simple protocol has been successfully employed in the synthesis of a wide range of N-alkynylated 7-azaindoles with good yields. Also, this approach is well-suited for large-scale N-alkynylation reactions. The designed N-alkynylated 7-azaindoles were further subjected to Cu-/Ir-catalyzed alkyne-azide cycloaddition (CuAAC/IrAAC) or "click" reaction for the rapid synthesis of 1,4-/1,5 disubstituted 1,2,3-triazole decorated 7-azaindoles. A mechanistic study based on density functional theory (DFT) calculations and ultraviolet-visible (UV) spectroscopic studies revealed that the CuI and DMAP combination formed a [CuII (DMAP)2 I2 ] species, which acts as an active catalyst. The DFT method was used to assess the energetic viability of an organometallic in the C-N bond formation pathway originating from the [CuII (DMAP)2 I2 ] complex. We expect that the newly designed Cu/DMAP/alkyne system will offer valuable insights into the field of Cu-catalyzed transformations.
Collapse
Affiliation(s)
- Vishal Talukdar
- Department of Chemistry and Chemical Biology, Indian Institution of Technology (Indian School of Mines), Dhanbad, 826004, Dhanbad (Jharkhand), India
| | - Krishanu Mondal
- Department of Chemistry and Chemical Biology, Indian Institution of Technology (Indian School of Mines), Dhanbad, 826004, Dhanbad (Jharkhand), India
| | - Devendra Kumar Dhaked
- Department of Pharmacoinformatics, National Institute of Pharmaceutical Education and Research, (NIPER) Kolkata, 700054, Kolkata, India
| | - Parthasarathi Das
- Department of Chemistry and Chemical Biology, Indian Institution of Technology (Indian School of Mines), Dhanbad, 826004, Dhanbad (Jharkhand), India
| |
Collapse
|
5
|
Ishida M, Adachi R, Kobayashi K, Yamamoto Y, Kawahara C, Yamada T, Aoyama H, Kanomata K, Akai S, Lam PYS, Sajiki H, Ikawa T. First atroposelective Chan-Lam coupling for the synthesis of C-N linked biaryls. Chem Commun (Camb) 2024; 60:678-681. [PMID: 38165949 DOI: 10.1039/d3cc05447k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
The first atroposelective Chan-Lam coupling for the synthesis of C-N axial enantiomers is reported with good yields and ee. MnO2 additive is crucial for the success of the coupling. The longstanding problem of the lack of enantioselective synthesis to make chiral C-N linked atropisomers is solved.
Collapse
Affiliation(s)
- Moeka Ishida
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, Daigaku-Nishi, Gifu 501-1196, Japan.
| | - Rina Adachi
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Kazuki Kobayashi
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yukiko Yamamoto
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, Daigaku-Nishi, Gifu 501-1196, Japan.
| | - Chinatsu Kawahara
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, Daigaku-Nishi, Gifu 501-1196, Japan.
| | - Tsuyoshi Yamada
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, Daigaku-Nishi, Gifu 501-1196, Japan.
| | - Hiroshi Aoyama
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Kyohei Kanomata
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Shuji Akai
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Patrick Y S Lam
- Baruch S. Blumberg Institute, Doylestown, Pennsylvania, 18902, USA
| | - Hironao Sajiki
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, Daigaku-Nishi, Gifu 501-1196, Japan.
| | - Takashi Ikawa
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, Daigaku-Nishi, Gifu 501-1196, Japan.
| |
Collapse
|