1
|
Ouyang WT, Ji HT, Jiang J, Wu C, Hou JC, Zhou MH, Lu YH, Ou LJ, He WM. Ferrocene/air double-mediated FeTiO 3-photocatalyzed semi-heterogeneous annulation of quinoxalin-2(1 H)-ones in EtOH/H 2O. Chem Commun (Camb) 2023; 59:14029-14032. [PMID: 37964611 DOI: 10.1039/d3cc04020h] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
With both ferrocene and air as the redox catalysts, for the first time, the low-cost natural ilmenite (FeTiO3) was successfully used for photocatalytic bond formations. Under the assistance of a traceless H-bond, and HCHO as the methylene reagent, a variety of imidazo[1,5-a]quinoxalinones were semi-heterogeneously photosynthesized in high yields with good functional group compatibility.
Collapse
Affiliation(s)
- Wen-Tao Ouyang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.
| | - Hong-Tao Ji
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.
| | - Jun Jiang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.
| | - Chao Wu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.
| | - Jia-Cheng Hou
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.
| | - Min-Hang Zhou
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.
| | - Yu-Han Lu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.
| | - Li-Juan Ou
- School of Materials Science and Engineering, Hunan Institute of Technology, Hengyang 421002, China.
| | - Wei-Min He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.
| |
Collapse
|
2
|
Lu YH, Mu SY, Jiang J, Zhou MH, Wu C, Ji HT, He WM. Paraformaldehyde as C1 Synthon: Electrochemical Three-Component Synthesis of Tetrahydroimidazo[1,5-a]quinoxalin-4(5H)-ones in Aqueous Ethanol. CHEMSUSCHEM 2023; 16:e202300523. [PMID: 37728196 DOI: 10.1002/cssc.202300523] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 07/25/2023] [Indexed: 09/21/2023]
Abstract
A green and practical method for the electrochemical synthesis of tetrahydroimidazo[1,5-a]quinoxalin-4(5H)-ones through the three-component reaction of quinoxalin-2(1H)-ones, N-arylglycines and paraformaldehyde was reported. In this strategy, EtOH played dual roles (eco-friendly solvent and waste-free pre-catalyst) and the in situ generated ethoxide promoted triple sequential deprotonations.
Collapse
Affiliation(s)
- Yu-Han Lu
- Hengyang Medical School, University of South China, Hengyang, 421001, China
| | - Si-Yu Mu
- Hengyang Medical School, University of South China, Hengyang, 421001, China
| | - Jun Jiang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, China
| | - Min-Hang Zhou
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, China
| | - Chao Wu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, China
| | - Hong-Tao Ji
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, China
| | - Wei-Min He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, China
| |
Collapse
|
3
|
Goel KK, Rajput SK, Kumar A, Nandi NK, Joshi G, Kharb R. Imidazoquinoxaline as a Privileged Fused Pharmacophore in Anticancer Drug Development: A Review of Synthetic Strategies and Medicinal Aspects. ChemistrySelect 2022. [DOI: 10.1002/slct.202200834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kapil Kumar Goel
- Deparment of Pharmaceutical Sciences Gurukul Kangri (Deemed to be University) Haridwar 249404 India
- Amity Institute of Pharmacy Amity University Noida Uttar Pradesh 201301 India
| | - Satyendra Kumar Rajput
- Deparment of Pharmaceutical Sciences Gurukul Kangri (Deemed to be University) Haridwar 249404 India
| | - Ashwani Kumar
- Deparment of Pharmaceutical Sciences Gurukul Kangri (Deemed to be University) Haridwar 249404 India
| | - Nilay Kumar Nandi
- Department of Pharmaceutical Chemistry ISF College of Pharmacy, Ghal Kalan G.T Road, Moga Punjab India- 142001
| | - Gaurav Joshi
- School of Pharmacy Graphic Era Hill University Dehradun 248002 India
| | - Rajeev Kharb
- Amity Institute of Pharmacy Amity University Noida Uttar Pradesh 201301 India
| |
Collapse
|
4
|
Borah B, Chowhan LR. Recent advances in the transition-metal-free synthesis of quinoxalines. RSC Adv 2021; 11:37325-37353. [PMID: 35496411 PMCID: PMC9043781 DOI: 10.1039/d1ra06942j] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 10/30/2021] [Indexed: 01/04/2023] Open
Abstract
Quinoxalines, also known as benzo[a]pyrazines, constitute an important class of nitrogen-containing heterocyclic compounds as a result of their widespread prevalence in natural products, biologically active synthetic drug candidates, and optoelectronic materials. Owing to their importance and chemists' ever-increasing imagination of new transformations of these products, tremendous efforts have been dedicated to finding more efficient approaches toward the synthesis of quinoxaline rings. The last decades have witnessed a marvellous outburst in modifying organic synthetic methods to create them sustainable for the betterment of our environment. The exploitation of transition-metal-free catalysis in organic synthesis leads to a new frontier to access biologically active heterocycles and provides an alternative method from the perspective of green and sustainable chemistry. Despite notable developments achieved in transition-metal catalyzed synthesis, the high cost involved in the preparation of the catalyst, toxicity, and difficulty in removing it from the final products constitute disadvantageous effects on the atom economy and eco-friendly nature of the transformation. In this review article, we have summarized the recent progress achieved in the synthesis of quinoxalines under transition-metal-free conditions and cover the reports from 2015 to date. This aspect is presented alongside the mechanistic rationalization and limitations of the reaction methodologies. The scopes of future developments are also highlighted.
Collapse
Affiliation(s)
- Biplob Borah
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat Gandhinagar-382030 India
| | - L Raju Chowhan
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat Gandhinagar-382030 India
| |
Collapse
|
5
|
Singh R, Kumar R, Pandrala M, Kaur P, Gupta S, Tailor D, Malhotra SV, Salunke DB. Facile synthesis of C6-substituted benz[4,5]imidazo[1,2-a]quinoxaline derivatives and their anticancer evaluation. Arch Pharm (Weinheim) 2021; 354:e2000393. [PMID: 33749032 DOI: 10.1002/ardp.202000393] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 02/17/2021] [Accepted: 02/19/2021] [Indexed: 01/10/2023]
Abstract
Cancer remains a leading cause of death worldwide, resulting in continuous efforts to discover and develop highly efficacious anticancer drugs. High-throughput screening of heterocyclic compound libraries is one of the promising approaches that provided several new lead molecules with a novel mechanism of action. On the basis of the promising anticancer potential of imidazoquinoxaline as well as the structurally similar imidazoquinoline-derived scaffold, we prepared a set of C6-substituted benzimidazo[1,2-a]quinoxaline derivatives via two novel synthetic routes using commercially available starting materials, with good to excellent yields and evaluated their anticancer activity against the NCI-60 cancer cell lines. The one-dose (10 µM) anticancer screening of the synthesized compounds in the NCI-60 cell line panel revealed that the substituents have a significant role in the activity. In particular, the indole (7f), imidazole (7g), and benzimidazole (7h) derivatives showed significant activity against the triple-negative breast cancer cell line, MDA-MB-468. The lead compounds also exhibited notable IC50 values against another breast cancer cell line, MCF-7. Furthermore, it was observed that these compounds were relatively nontoxic to normal cell lines: HEK293 (human embryonic kidney cell line) and MCF12A (nontumorigenic human breast epithelial cell line). The IC50 values against healthy cells were at least 5- to 11-fold higher, offering a new class of heterocycles that can be further developed as promising therapeutics for cancer treatment.
Collapse
Affiliation(s)
- Rahul Singh
- Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, India
| | - Ravinder Kumar
- Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, India
| | - Mallesh Pandrala
- Department of Cell, Developmental and Cancer Biology, Center for Experimental Therapeutics, Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Parleen Kaur
- Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, India
| | - Saloni Gupta
- Department of Human Biology, University of Toronto, St. George Campus, Toronto, Ontario, Canada
| | - Dhanir Tailor
- Department of Cell, Developmental and Cancer Biology, Center for Experimental Therapeutics, Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Sanjay V Malhotra
- Department of Cell, Developmental and Cancer Biology, Center for Experimental Therapeutics, Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Deepak B Salunke
- Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, India.,National Interdisciplinary Centre of Vaccine, Immunotherapeutics and Antimicrobials, Panjab University, Chandigarh, India
| |
Collapse
|