1
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Cai N, Gao X, Jia L, Liu Y, Zhou L, Zhao J, Qu J, Zhou Y. 3-(2-Trifluoromethyl-3-aryl-4H-chromen-4-yl)-1H-indoles: Mastering anti-inflammation and analgesia while mitigating gastrointestinal side effects. Bioorg Chem 2024; 153:107805. [PMID: 39255608 DOI: 10.1016/j.bioorg.2024.107805] [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: 08/12/2024] [Revised: 08/31/2024] [Accepted: 09/03/2024] [Indexed: 09/12/2024]
Abstract
A series of 3-(2-trifluoromethyl-3-aryl-4H-chromen-4-yl)-1H-indoles (5-1 to 5-29) were developed and characterized. Most of compounds were found to be potent for inhibiting the production of NO in LPS-induced RAW264.7 cells, of which 3-(3-(4-chlorophenyl)-6-methoxy-2-(trifluoromethyl)-4H-chromen-4-yl)-1H-indole (5-25) was the most optimal (IC50 = 4.82 ± 0.34 μΜ) and was capable of significantly suppressing the release of PGE2. The inhibitory effect of 5-25 on human recombinant COX-2 (IC50 = 51.7 ± 1.3 nM) was measured and molecular docking was performed, determining 5-25 as a COX-2 inhibitor. Additionally, the interaction between 5-25 and COX-2 was determined by the CETSA technique. Then, 5-25 inhibited the degradation of IκB, the phosphorylation and nuclear translocation of NF-κB p65, and the expression of COX-2 and iNOS. Moreover, it was verified that 5-25 exhibited efficacy in rodent models of inflammation and pain, encompassing the paw edema, cotton pellet-induced granuloma, acid-induced writhing, and adjuvant-induced arthritis models. Therefore, the mechanism of 5-25 may be to bind to COX-2 and exert anti-inflammatory and analgesic effects in vitro and in vivo by suppressing the NF-κB pathway. Encouragingly, in comparison with indomethacin, 5-25 exhibited a lower ulcerative potential in rats, as manifested by generating smaller areas and fewer ulcers, less inflammatory infiltration, a lower expression of MMP-9, and less apoptosis. In conclusion, 5-25 is a candidate drug with high activity and low ulcerogenic potential, and it deserves further research for the treatment of inflammation, pain, and other symptoms in which COX-2 plays a role in their pathogenesis.
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Affiliation(s)
- Nan Cai
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Xiang Gao
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Ling Jia
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.
| | - Yunzhe Liu
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Lingwei Zhou
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Jinfeng Zhao
- Instrumental Analysis Center, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.
| | - Yuhan Zhou
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.
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2
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Cai N, Gao X, Li W, Yang L, Zhao J, Qu J, Zhou Y. Novel trifluoromethyl ketone derivatives as oral cPLA 2/COX-2 dual inhibitors for resolution of inflammation in rheumatoid arthritis. Bioorg Chem 2024; 148:107453. [PMID: 38761708 DOI: 10.1016/j.bioorg.2024.107453] [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: 03/20/2024] [Revised: 04/25/2024] [Accepted: 05/12/2024] [Indexed: 05/20/2024]
Abstract
Thirty-five trifluoromethyl hydrazones and seventeen trifluoromethyl oxime esters were designed and synthesized via molecular hybridization. All the target compounds were initially screened for in vitro anti-inflammatory activity by assessing their inhibitory effect on NO release in LPS-stimulated RAW264.7 cells, and the optimal compound was finally identified as 2-(3-Methoxyphenyl)-N'-((6Z,9Z,12Z,15Z)-1,1,1-trifluorohenicosa-6,9,12,15-tetraen-2-ylidene)acetohydrazide (F26, IC50 = 4.55 ± 0.92 μM) with no cytotoxicity. Moreover, F26 potently reduced the production of PGE2 in LPS-stimulated RAW264.7 cells compared to indomethacin. The interaction of F26 with COX-2 and cPLA2 was directly verified by the CETSA technique. F26 was found to modulate the phosphorylation levels of p38 MAPK and NF-κB p65, as well as the protein expression of IκB, cPLA2, COX-2, and iNOS in LPS-stimulated rat peritoneal macrophages. Additionally, F26 was observed to prevent the nuclear translocation of NF-κB p65 in LPS-stimulated rat peritoneal macrophages by immunofluorescence localization. Therefore, the aforementioned in vitro experiments demonstrated that F26 blocked the p38 MAPK and NF-κB pathways by binding to COX-2 and cPLA2. In the adjuvant-induced arthritis model, F26 demonstrated a significant effect in preventing arthritis symptoms and inflammatory status in rats, exerting an immunomodulatory role by regulating the homeostasis between Th17 and Treg through inhibition of the p38 MAPK/cPLA2/COX-2/PGE2 and NF-κB pathways. Encouragingly, F26 caused less acute ulcerogenicity in rats at a dose of 50 mg/kg compared to indomethacin. Overall, F26 is a promising candidate worthy of further investigation for treating inflammation and associated pain with lesser gastrointestinal irritation, as well as other symptoms in which cPLA2 and COX-2 are implicated in the pathophysiology.
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Affiliation(s)
- Nan Cai
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Xiang Gao
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Wenjing Li
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Li Yang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.
| | - Jinfeng Zhao
- Instrumental Analysis Center, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.
| | - Yuhan Zhou
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.
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3
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Cai N, Gao X, Yang L, Li W, Sun W, Zhang S, Zhao J, Qu J, Zhou Y. Discovery of novel NSAID hybrids as cPLA 2/COX-2 dual inhibitors alleviating rheumatoid arthritis via inhibiting p38 MAPK pathway. Eur J Med Chem 2024; 267:116176. [PMID: 38286094 DOI: 10.1016/j.ejmech.2024.116176] [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: 11/22/2023] [Revised: 01/20/2024] [Accepted: 01/22/2024] [Indexed: 01/31/2024]
Abstract
A series of NSAIDs hybrid molecules were synthesized and characterized, and their ability to inhibit NO release in LPS-induced RAW264.7 macrophages was evaluated. Most of the compounds showed significant anti-inflammatory activity in vitro, of which (2E,6Z,9Z,12Z,15Z)-1,1,1-trifluorohenicosa-2,6,9,12,15-pentaen-2-yl 2-(4-benzoylphenyl) propanoate (VI-60) was the most optimal (IC50 = 3.85 ± 0.25 μΜ) and had no cytotoxicity. In addition, VI-60 notably reduced the production of PGE2 in LPS-stimulated RAW264.7 cells compared to ketoprofen. Futhur more, VI-60 significantly inhibited the expression of iNOS, cPLA2, and COX-2 and the phosphorylation of p38 MAPK in LPS-stimulated RAW264.7 cells. The binding of VI-60 to cPLA2 and COX-2 was directly verified by the CETSA technique. In vivo studies illustrated that VI-60 exerted an excellent therapeutic effect on adjuvant-induced arthritis in rats by regulating the balance between Th17 and Treg through inhibiting the p38 MAPK/cPLA2/COX-2/PGE2 pathway. Encouragingly, VI-60 showed a lower ulcerative potential in rats at a dose of 50 mg/kg compared to ketoprofen. In conclusion, the hybrid molecules of NSAIDs and trifluoromethyl enols are promising candidates worthy of further investigation for the treatment of inflammation, pain, and other symptoms in which cPLA2 and COX-2 play a role in their etiology.
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Affiliation(s)
- Nan Cai
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, PR China.
| | - Xiang Gao
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, PR China.
| | - Li Yang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, PR China.
| | - Wenjing Li
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, PR China.
| | - Wuding Sun
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, PR China.
| | - Shuaibo Zhang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, PR China.
| | - Jinfeng Zhao
- Instrumental Analysis Center, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, PR China.
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, PR China.
| | - Yuhan Zhou
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, PR China.
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4
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Isbel SR, Bugarin A. Synthesis of a New α-Azidomethyl Styrene from Safrole via a Dearomative Rearrangement. MOLBANK 2023; 2023:M1713. [PMID: 37920849 PMCID: PMC10621569 DOI: 10.3390/m1713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2023] Open
Abstract
There is a growing interest in developing more efficient synthetic alternatives for the synthesis of nitrogen-containing allylic compounds. This article presents a straightforward two-step protocol to produce 5-(3-azidoprop-1-en-2-yl)benzo[d][1,3]dioxole 4 from the natural product safrole. The method yielded the expected α-azidomethyl styrene 4, in good yield, via a dearomative rearrangement.
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Affiliation(s)
- Stephen R. Isbel
- Department of Chemistry and Physics, Florida Gulf Coast University, 10501 FGCU Boulevard South, Fort Myers, FL 33965, USA
| | - Alejandro Bugarin
- Department of Chemistry and Physics, Florida Gulf Coast University, 10501 FGCU Boulevard South, Fort Myers, FL 33965, USA
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5
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TBAF-initiated vinylation of aldehydes with trimethyl[(Z)-2-(phenylsulfanyl)-1-(trifluoromethyl)vinyl]silane. J Fluor Chem 2022. [DOI: 10.1016/j.jfluchem.2022.109959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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6
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Li D, Zhang S, Wang B, Sun W, Zhao J, Qu J, Zhou Y. Palladium-catalyzed stereoselective trifluoromethylated allylic alkylation of 3-substituted oxindoles. Org Chem Front 2022. [DOI: 10.1039/d1qo01597d] [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
The palladium-catalyzed asymmetric trifluoromethylated allylic alkylation of 3-substituted oxindoles using α-(trifluoromethyl)alkenyl acetates as trifluoromethyl-containing allyl precursors was developed.
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Affiliation(s)
- Dong Li
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Shuaibo Zhang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Bangzhong Wang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Wuding Sun
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Jinfeng Zhao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Yuhan Zhou
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
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7
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De A, Majee A. Synthesis of various functionalized
2
H
‐azirines: An
updated library. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Aramita De
- Department of Chemistry Visva‐Bharati (A Central University) Santiniketan India
| | - Adinath Majee
- Department of Chemistry Visva‐Bharati (A Central University) Santiniketan India
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8
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Li D, Zhang W, Zhang S, Sun W, Zhao J, Wang B, Qu J, Zhou Y. Palladium-Catalyzed Asymmetric Trifluoromethylated Allylic Alkylation of Pyrazolones Enabled by α-(Trifluoromethyl)alkenyl Acetates. Org Lett 2021; 23:5804-5808. [PMID: 34279113 DOI: 10.1021/acs.orglett.1c01957] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The first asymmetric trifluoromethylated allylic alkylation of pyrazolones using α-(trifluoromethyl)alkenyl acetates as a novel trifluoromethylated allylation reagent is described, affording various functionalized chiral pyrazolones containing a trifluoromethylated allyl substituent in high yields with excellent regio-/enantio-/diastereoselectivities. Mechanistically, the double-bond migration of α-(trifluoromethyl)alkenyl acetates in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene is initial and interesting step. More importantly, this study is of significance in providing a novel and widely applicable trifluoromethyl-containing allylation reagent.
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Affiliation(s)
- Dong Li
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Wande Zhang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Shuaibo Zhang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Wuding Sun
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Jinfeng Zhao
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Baomin Wang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Yuhan Zhou
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
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9
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Zhang C, Li D, Zhao Y, Zhao J, Qu J, Zhou Y. Base‐free Suzuki‐Miyaura Coupling of (
Z
)‐Trifluoromethyl Alkenyltriflates: An Efficient Approach to
α
‐Trifluoromethyl Arylenes. ChemistrySelect 2020. [DOI: 10.1002/slct.202004030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chunxia Zhang
- State Key Laboratory of Fine Chemicals Department of Pharmaceutical Sciences School of Chemical Engineering Dalian University of Technology 2 Linggong road Dalian 116024 P.R. China
| | - Dong Li
- State Key Laboratory of Fine Chemicals Department of Pharmaceutical Sciences School of Chemical Engineering Dalian University of Technology 2 Linggong road Dalian 116024 P.R. China
| | - Yilong Zhao
- State Key Laboratory of Fine Chemicals Department of Pharmaceutical Sciences School of Chemical Engineering Dalian University of Technology 2 Linggong road Dalian 116024 P.R. China
| | - Jinfeng Zhao
- State Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology 2 Linggong road Dalian 116024 P.R. China
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology 2 Linggong road Dalian 116024 P.R. China
- Key Lab Adv Mat. East China University of Science & Technology 130 Meilong road Shanghai 200237 P. R. China
| | - Yuhan Zhou
- State Key Laboratory of Fine Chemicals Department of Pharmaceutical Sciences School of Chemical Engineering Dalian University of Technology 2 Linggong road Dalian 116024 P.R. China
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10
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Cai N, He L, Wang K, Feng Z, Cui Z, Ji M, Qi Z, Qin P, Li X. Novel sulfonamides against Botrytis cinerea with no positive cross-resistance to commercial fungicides: Design, synthesis and SAR study. Bioorg Med Chem Lett 2019; 30:126859. [PMID: 31889667 DOI: 10.1016/j.bmcl.2019.126859] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 10/30/2019] [Accepted: 11/25/2019] [Indexed: 12/16/2022]
Abstract
Thirty-four novel compounds were synthesized using chesulfamide (N-(2-trifluoromethyl-4-chlorophenyl)-2-oxocyclohexyl sulfonamide), a high-profile fungicide, as the lead compound, and their structures were characterized by 1H NMR, 13C NMR, MS and elemental analysis. Additionally, the structure of (1S,2R)-2-((3-bromophenethyl)amino)-N-(4-chloro-2-trifluoromethylphenyl)cyclohexane-1-sulfonamide (IV-9) was confirmed by X-ray single crystal diffraction. The mycelium inhibition tests, spore germination inhibition tests, tomato pot tests and field trials were performed against strains of B. cinerea. Bioassay results showed that most of target compounds had good fungicidal activity against B. cinerea, in particular, IV-9 exhibited similar or superior effects to procymidone, boscalid and pyrisoxazole in all in vitro and in vivo tests. Moreover, there was no positive cross-resistance found between the compound IV-9 and eight commercial fungicides (azoxystrobin, boscalid, chlorothalonil, diethofencarb, fludioxonil, procymidone, pyrimethanil and pyrisoxazole) in the cross-resistance validation test performed by an innovative method.
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Affiliation(s)
- Nan Cai
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Lu He
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Kai Wang
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Zhihui Feng
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Zining Cui
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou 510642, Guangdong, China
| | - Mingshan Ji
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Zhiqiu Qi
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Peiwen Qin
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
| | - Xinghai Li
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang 110866, Liaoning, China.
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11
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Ramkumar N, Voskressensky LG, Sharma UK, Van der Eycken EV. Recent approaches to the synthesis of 2H-azirines. Chem Heterocycl Compd (N Y) 2019. [DOI: 10.1007/s10593-019-02539-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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12
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Ojo OS, Miranda O, Baumgardner KC, Bugarin A. Practical regio- and stereoselective azidation and amination of terminal alkenes. Org Biomol Chem 2019; 16:9354-9358. [PMID: 30489592 DOI: 10.1039/c8ob02734j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
There is significant interest in developing more rapid and efficient production of nitrogen-containing allylic compounds, as widely used in various syntheses. This work reports a variety of allylic azides and allylic amines synthesized by an efficient, new one-pot protocol that employs readily available terminal alkenes as starting materials. This method is highly regio- and stereoselective, affording the linear (E)-isomer, under metal-free conditions. This process tolerates several functional groups including halogen-containing molecules; it is general for azides and amine nucleophiles; and, adducts were obtained in good yields.
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Affiliation(s)
- Olatunji S Ojo
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, TX 76019, USA.
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13
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Wang M, Hou J, Yu W, Chang J. Synthesis of 2 H-Azirines via Iodine-Mediated Oxidative Cyclization of Enamines. J Org Chem 2018; 83:14954-14961. [PMID: 30474371 DOI: 10.1021/acs.joc.8b02022] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A facile and practical oxidative cyclization reaction of enamines to 2 H-azirines has been developed, employing molecular iodine. The features of the present synthetic approach include no use of transition metals, mild reaction conditions, and simplicity of operation. Under the optimal reaction conditions, a variety of 2 H-azirine derivatives were synthesized from simple and readily accessible enamine precursors in an efficient and scalable fashion.
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Affiliation(s)
- Manman Wang
- College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou , Henan 450001 , People's Republic of China
| | - Jiao Hou
- College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou , Henan 450001 , People's Republic of China
| | - Wenquan Yu
- College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou , Henan 450001 , People's Republic of China
| | - Junbiao Chang
- College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou , Henan 450001 , People's Republic of China
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14
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Zhou Y, Zhang C, Zhao Y, Li D, Zhao J, Wang Z, Qu J. Base-Promoted Double-Bond-Migration/Hydrolysis/Isomerization of 4-Aryl-1,1,1-trifluorobut-2-en-2-yl Trifluoromethanesulfonates: A Metal-Free Approach to β-Trifluoromethyl Ketones. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yuhan Zhou
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; Linggong road 2 116024 Dalian PR China
| | - Chunxia Zhang
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; Linggong road 2 116024 Dalian PR China
| | - Yilong Zhao
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; Linggong road 2 116024 Dalian PR China
| | - Dong Li
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; Linggong road 2 116024 Dalian PR China
| | - Jinfeng Zhao
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; Linggong road 2 116024 Dalian PR China
| | - Zhaotian Wang
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; Linggong road 2 116024 Dalian PR China
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; Linggong road 2 116024 Dalian PR China
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15
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Li D, Zhou Y, Zhao Y, Zhang C, Li J, Zhao J, Qu J. Synthesis of 2-trifluoromethyl-2-hydroxy-2H-chromenes via cyclization of (Z)-trifluoromethyl alkenyl triflates and salicylaldehydes. J Fluor Chem 2018. [DOI: 10.1016/j.jfluchem.2018.05.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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