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Li X, He Q, Fan R. Divergent synthesis of 4-amino indoles with free amine groups via tandem reaction of 2-alkynylanilines. Org Chem Front 2022. [DOI: 10.1039/d2qo00675h] [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 dearomatization method for divergent synthesis of 4-amino indoles having N1 or C4 free amine groups from 2-alkynylanilines was reported.
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Affiliation(s)
- Xiaohua Li
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
| | - Qiuqin He
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
| | - Renhua Fan
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
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Deng L, Kang X, Zhang K, Gao M, Fu Q, Xia Z, Gao D. Fabrication of covalent organic frameworks and its selective extraction of fluoronitrobenzenes from environmental samples. J Chromatogr A 2020; 1635:461704. [PMID: 33223152 DOI: 10.1016/j.chroma.2020.461704] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 11/10/2020] [Accepted: 11/10/2020] [Indexed: 02/02/2023]
Abstract
In this study, porous covalent organic frameworks (COFs, named as COFs-SWMU) were synthesized for the first time via a facile approach by using 4,4',4''-methylidynetri-anilin and 2,5-dihydroxy-1,4-benzenedicarboxaldehyde as precursors under ambient temperature. The COFs-SWMU were characterized by scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction and X-ray photoelectron spectroscopy, thermogravimetric analysis, etc. The COFs-SWMU exhibited a relatively high specific surface area and desirable thermal stability. The adsorption performance of COFs-SWMU towards fluoronitrobenzenes (FNBs, including 1-fluoro-2-nitrobenzene, 1-fluoro-3-nitrobenzene, 1-fluoro-4-nitrobenzene, 2,4-difluoronitrobenzene, 3,4-difluoronitrobenzene, and 3,4-dinitrofluorobenzene) was investigated on the basis of adsorption capacity and partition coefficient (PC). The adsorption kinetics and isotherm of COFs-SWMU for FNBs were studied in detail. Further, a simple, fast and sensitive method which combined COFs-SWMU based extraction with high-performance liquid chromatography-diode array detection, was proposed for the analysis of FNBs in environmental samples. Desirable linearity (R2>0.9998) in the range of 0.1-100 μg•mL-1, low limits of detection (LODs; 0.1‒0.15 μg•mL‒1), low limits of quantitation (LOQs; 0.28‒0.40 μg•mL‒1), and desirable precision (RSDs, 0.24-2.83% for intraday and 1.13-6.92% for interday) are obtained. Finally, the COFs-SWMU were applied to the effective extraction of FNBs from environmental samples, and desirable recovery results were obtained.
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Affiliation(s)
- Linlin Deng
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Xun Kang
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Kailian Zhang
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Manjie Gao
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Qifeng Fu
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Zhining Xia
- School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China.
| | - Die Gao
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China.
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Richardson BG, Jain AD, Potteti HR, Lazzara PR, David BP, Tamatam CR, Choma E, Skowron K, Dye K, Siddiqui Z, Wang YT, Krunic A, Reddy SP, Moore TW. Replacement of a Naphthalene Scaffold in Kelch-like ECH-Associated Protein 1 (KEAP1)/Nuclear Factor (Erythroid-derived 2)-like 2 (NRF2) Inhibitors. J Med Chem 2018; 61:8029-8047. [PMID: 30122040 DOI: 10.1021/acs.jmedchem.8b01133] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Activators of nuclear factor-erythroid 2-related factor 2 (NRF2) could lead to promising therapeutics for prevention and treatment of oxidative stress and inflammatory disorders. Ubiquitination and subsequent degradation of the transcription factor NRF2 is mediated by Kelch-like ECH-associated protein-1 (KEAP1). Inhibition of the KEAP1/NRF2 interaction with small molecules leads to NRF2 activation. Previously, we and others described naphthalene-based NRF2 activators, but the 1,4-diaminonaphthalene scaffold may not represent a drug-like scaffold. Paying particular attention to aqueous solubility, metabolic stability, potency, and mutagenicity, we modified a previously known, naphthalene-based nonelectrophilic NRF2 activator to give a series of non-naphthalene and heterocyclic scaffolds. We found that, compared to previously reported naphthalene-based compounds, a 1,4-isoquinoline scaffold provides a better mutagenic profile without sacrificing potency, stability, or solubility.
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Affiliation(s)
- Benjamin G Richardson
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy , ‡Department of Pediatrics, College of Medicine , §UICentre for Drug Discovery , ⊥Mass Spectrometry Core at Research Resources Center , #University of Illinois Cancer Center , University of Illinois at Chicago , 833 South Wood Street , Chicago , Illinois 60612 , United States
| | - Atul D Jain
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy , ‡Department of Pediatrics, College of Medicine , §UICentre for Drug Discovery , ⊥Mass Spectrometry Core at Research Resources Center , #University of Illinois Cancer Center , University of Illinois at Chicago , 833 South Wood Street , Chicago , Illinois 60612 , United States
| | | | - Phillip R Lazzara
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy , ‡Department of Pediatrics, College of Medicine , §UICentre for Drug Discovery , ⊥Mass Spectrometry Core at Research Resources Center , #University of Illinois Cancer Center , University of Illinois at Chicago , 833 South Wood Street , Chicago , Illinois 60612 , United States
| | - Brian P David
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy , ‡Department of Pediatrics, College of Medicine , §UICentre for Drug Discovery , ⊥Mass Spectrometry Core at Research Resources Center , #University of Illinois Cancer Center , University of Illinois at Chicago , 833 South Wood Street , Chicago , Illinois 60612 , United States
| | | | - Ewelina Choma
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy , ‡Department of Pediatrics, College of Medicine , §UICentre for Drug Discovery , ⊥Mass Spectrometry Core at Research Resources Center , #University of Illinois Cancer Center , University of Illinois at Chicago , 833 South Wood Street , Chicago , Illinois 60612 , United States
| | - Kornelia Skowron
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy , ‡Department of Pediatrics, College of Medicine , §UICentre for Drug Discovery , ⊥Mass Spectrometry Core at Research Resources Center , #University of Illinois Cancer Center , University of Illinois at Chicago , 833 South Wood Street , Chicago , Illinois 60612 , United States
| | | | - Zamia Siddiqui
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy , ‡Department of Pediatrics, College of Medicine , §UICentre for Drug Discovery , ⊥Mass Spectrometry Core at Research Resources Center , #University of Illinois Cancer Center , University of Illinois at Chicago , 833 South Wood Street , Chicago , Illinois 60612 , United States
| | | | - Aleksej Krunic
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy , ‡Department of Pediatrics, College of Medicine , §UICentre for Drug Discovery , ⊥Mass Spectrometry Core at Research Resources Center , #University of Illinois Cancer Center , University of Illinois at Chicago , 833 South Wood Street , Chicago , Illinois 60612 , United States
| | | | - Terry W Moore
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy , ‡Department of Pediatrics, College of Medicine , §UICentre for Drug Discovery , ⊥Mass Spectrometry Core at Research Resources Center , #University of Illinois Cancer Center , University of Illinois at Chicago , 833 South Wood Street , Chicago , Illinois 60612 , United States
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