1
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Lu Y, Cao T, Li K, Lin YW, Zhu L, Huang J. Total Synthesis of Brevitaxin. Org Lett 2024; 26:5237-5242. [PMID: 38856036 DOI: 10.1021/acs.orglett.4c01319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Brevitaxin was prepared in nine steps from commercially available carnosic acid. The construction of the 1,4-benzodioxin moiety involved an unique stepwise ortho-quinone-engaged [4+2] cycloaddition. Two strategic stages were employed to prepare the highly unsaturated cycloaddition precursor 3: (1) synthesizing the diene moiety (C1-C2 and C10-C20 double bonds) by regioselective ortho-quinone tautomerization, and (2) installing four sp2-hybridized carbon atoms (C3, C5, C6 and C7) in one step using a SeO2-promoted chemo- and regioselective oxidation reaction.
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Affiliation(s)
- Yang Lu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Tingting Cao
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Kang Li
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Lei Zhu
- College of Pharmacy, Army Medical University, Chongqing 400038, China
| | - Jun Huang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
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2
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Zhang Z, Li X, Song Q, Li Y, Tian X, Ali S, Yao Y, Li P, Wang Z, Zheng H. Asymmetric Total Synthesis of (+)-Chuanxiongnolide L1 via a Stereoselective Oxidative Dearomatization/Diels-Alder Strategy. Org Lett 2024; 26:2928-2933. [PMID: 38551465 DOI: 10.1021/acs.orglett.4c00411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
The first asymmetric total synthesis of chuanxiongnolide L1 was achieved in 16 steps and 1.9% overall yield by employing a bioinspired chiral auxiliary strategy. The key steps involving asymmetric oxidative dearomatization of chiral amino ether and subsequent asymmetric Diels-Alder reaction of the resulting masked chiral ortho-benzoquinone were adopted.
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Affiliation(s)
- Zhiqiang Zhang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Xiuhuan Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Qingyan Song
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Yuerong Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Xiqing Tian
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Sajjad Ali
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Yuan Yao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Pengfei Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Zhengshen Wang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Huaiji Zheng
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
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3
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Gao H, Miao Y, Sun W, Zhao R, Xiao X, Hua Y, Jia S, Wang M, Mei G. Diversity-Oriented Catalytic Asymmetric Dearomatization of Indoles with o-Quinone Diimides. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2305101. [PMID: 37870177 PMCID: PMC10724437 DOI: 10.1002/advs.202305101] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 09/14/2023] [Indexed: 10/24/2023]
Abstract
Herein, the first diversity-oriented catalytic asymmetric dearomatization of indoles with o-quinone diimides (o-QDIs) is reported. The catalytic asymmetric dearomatization (CADA) of indoles is one of the research focuses in terms of the structural and biological importance of dearomatized indole derivatives. Although great achievements have been made in target-oriented CADA reactions, diversity-oriented CADA reactions are regarded as more challenging and remain elusive due to the lack of synthons featuring multiple reaction sites and the difficulty in precise control of chemo-, regio-, and enantio-selectivity. In this work, o-QDIs are employed as a versatile building block, enabling the chemo-divergent dearomative arylation and [4 + 2] cycloaddition reactions of indoles. Under the catalysis of chiral phosphoric acid and mild conditions, various indolenines, furoindolines/pyrroloindolines, and six-membered-ring fused indolines are collectively prepared in good yields with excellent enantioselectivities. This diversity-oriented synthesis protocol enriches the o-quinone chemistry and offers new opportunities for CADA reactions.
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Affiliation(s)
- Hao‐Jie Gao
- College of ChemistryPingyuan LaboratoryZhengzhou UniversityZhengzhou450001China
| | - Yu‐Hang Miao
- College of ChemistryPingyuan LaboratoryZhengzhou UniversityZhengzhou450001China
| | - Wen‐Na Sun
- College of ChemistryPingyuan LaboratoryZhengzhou UniversityZhengzhou450001China
| | - Rui Zhao
- College of ChemistryPingyuan LaboratoryZhengzhou UniversityZhengzhou450001China
| | - Xiao Xiao
- Collaborative Innovation Center of Yangtze River Delta Region Green PharmaceuticalsZhejiang University of TechnologyHangzhou310014China
| | - Yuan‐Zhao Hua
- College of ChemistryPingyuan LaboratoryZhengzhou UniversityZhengzhou450001China
| | - Shi‐Kun Jia
- College of ChemistryPingyuan LaboratoryZhengzhou UniversityZhengzhou450001China
| | - Min‐Can Wang
- College of ChemistryPingyuan LaboratoryZhengzhou UniversityZhengzhou450001China
| | - Guang‐Jian Mei
- College of ChemistryPingyuan LaboratoryZhengzhou UniversityZhengzhou450001China
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4
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Rodríguez II, Rodríguez AD, Barnes CL. Isolation, Structural Analysis and Biological Activity Assays of Biselisabethoxanes A and B: Two Dissymmetric Bis-Diterpenes from the Southwestern Caribbean Sea Gorgonian Coral Pseudopterogorgia elisabethae. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227879. [PMID: 36431975 PMCID: PMC9694721 DOI: 10.3390/molecules27227879] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/07/2022] [Accepted: 11/11/2022] [Indexed: 11/17/2022]
Abstract
Two novel dissymmetric diterpenoids, biselisabethoxanes A and B (1 and 2), were isolated from the hexane extracts of the gorgonian coral Pseudopterogorgia elisabethae. Biselisabethoxane A (1) represents the first example of a marine-derived C40 dimer made of two distinct diterpene fragments, whereas biselisabethoxane B (2) is a fused heterodimer stemming from coupling of two amphilectane-based fragments. The structures of 1 and 2 were elucidated based on 1D and 2D NMR spectral data analysis. The molecular structure of 1 was subsequently confirmed by X-ray crystallographic analysis. When evaluated for their inhibitory effects in a series of well-established biological activity assays the isolated compounds were shown to moderately inhibit the growth of Mycobacterium tuberculosis.
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Affiliation(s)
- Ileana I. Rodríguez
- Department of Chemistry, University of Puerto Rico–Río Piedras Campus, P.O. Box 23346, UPR Station, San Juan, PR 00931, USA
| | - Abimael D. Rodríguez
- Department of Chemistry, University of Puerto Rico–Río Piedras Campus, P.O. Box 23346, UPR Station, San Juan, PR 00931, USA
- Molecular Sciences Research Center, University of Puerto Rico–Río Piedras Campus, 1390 Ponce de León Avenue, San Juan, PR 00926, USA
- Correspondence:
| | - Charles L. Barnes
- Department of Chemistry, University of Missouri-Columbia, Columbia, MO 65211, USA
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5
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Ochmann L, Fuhrmann M, Gössl FJ, Makaveev A, Schreiner PR. All That metas─Synthesis of Dispersion Energy Donor-Substituted Benzenes. Org Lett 2022; 24:6968-6972. [DOI: 10.1021/acs.orglett.2c02780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lukas Ochmann
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Michael Fuhrmann
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Felix J. Gössl
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Alexander Makaveev
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Peter R. Schreiner
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
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6
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Qin J, Zhou T, Zhou TP, Tang L, Zuo H, Yu H, Wu G, Wu Y, Liao RZ, Zhong F. Catalytic Atroposelective Electrophilic Amination of Indoles. Angew Chem Int Ed Engl 2022; 61:e202205159. [PMID: 35612900 DOI: 10.1002/anie.202205159] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Indexed: 01/13/2023]
Abstract
Reported here is the first catalytic atroposelective electrophilic amination of indoles, which delivers functionalized atropochiral N-sulfonyl-3-arylaminoindoles with excellent optical purity. This reaction was furnished by 1,6-nucleophilic addition to p-quinone diimines. Control experiments suggest an ionic mechanism that differs from the radical addition pathway commonly proposed for 1,6-addition to quinones. The origin of 1,6-addition selectivity was investigated through computational studies. Preliminary studies show that the obtained 3-aminoindoles atropisomers exhibit anticancer activities. This method is valuable with respect to enlarging the toolbox for atropochiral amine derivatives.
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Affiliation(s)
- Jingyang Qin
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Tong Zhou
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Tai-Ping Zhou
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Langyu Tang
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Honghua Zuo
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Huaibin Yu
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Guojiao Wu
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Yuzhou Wu
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Rong-Zhen Liao
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Fangrui Zhong
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
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7
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Naharwal S, Karishma P, Mahesha CK, Bajaj K, Mandal SK, Sakhuja R. Ruthenium-catalyzed (spiro)annulation of N-aryl-2,3-dihydrophthalazine-1,4-diones with quinones to access pentacyclic spiro-indazolones and fused-cinnolines. Org Biomol Chem 2022; 20:4753-4764. [PMID: 35616276 DOI: 10.1039/d2ob00493c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ru(II)-catalyzed strategies were developed for the [4 + 1] and [4 + 2] oxidative coupling between N-aryl-2,3-dihydrophthalazine-1,4-diones and 1,4-benzoquinones, achieving spiro-indazolones and fused-cinnolines, respectively. Mild, aerobic and external oxidant-free conditions, as well as the use of a ruthenium catalyst for such (spiro)annulative strategies with quinones over reported Rh/Ir-catalyts, underline the rewards of the disclosed protocols.
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Affiliation(s)
- Sushma Naharwal
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Rajasthan 333031, India.
| | - Pidiyara Karishma
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Rajasthan 333031, India.
| | - Chikkagundagal K Mahesha
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Rajasthan 333031, India.
| | - Kiran Bajaj
- Department of Chemistry, Amity Institute of Applied Sciences, Amity University, Noida, Uttar Pradesh, India
| | - Sanjay K Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, SAS Nagar, Manuali P.O., Mohali, Punjab 140306, India
| | - Rajeev Sakhuja
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Rajasthan 333031, India.
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8
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Qin J, Zhou T, Zhou T, Tang L, Zuo H, Yu H, Wu G, Wu Y, Liao RZ, Zhong F. Catalytic Atroposelective Electrophilic Amination of Indoles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205159] [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)
- Jingyang Qin
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Tong Zhou
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Taiping Zhou
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Langyu Tang
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Honghua Zuo
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Huaibin Yu
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Guojiao Wu
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Yuzhou Wu
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Rong-Zhen Liao
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Fangrui Zhong
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering Luoyu road 1037 430074 Wuhan CHINA
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9
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Zuo H, Zhong F. Reactivity Modulation of Labile Quinones and Biomimetic Catalytic Transformations. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202108032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Bashir MA, Wei J, Wang H, Zhong F, Zhai H. Recent advances in catalytic oxidative reactions of phenols and naphthalenols. Org Chem Front 2022. [DOI: 10.1039/d2qo00758d] [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
This critical review aims to provide an overview of oxidative phenol and naphthalenol transformations in nature and synthetic chemistry.
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Affiliation(s)
- Muhammad Adnan Bashir
- The State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
- Institute of Marine Biomedicine, Shenzhen Polytechnic, Shenzhen 518055, China
| | - Jian Wei
- The State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
- Institute of Marine Biomedicine, Shenzhen Polytechnic, Shenzhen 518055, China
| | - Huifei Wang
- Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis of Zhejiang Province, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Fangrui Zhong
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Hongbin Zhai
- The State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
- Institute of Marine Biomedicine, Shenzhen Polytechnic, Shenzhen 518055, China
- Shenzhen Bay Laboratory, Shenzhen 518055, China
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11
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Bashir MA, Tang L, Li L, Yu H, Yao W, Wu G, Zhong F. Formal dual C(sp 2)–H cross-dehydrogenative C–O bond formation to construct highly functionalized diaryl ethers with O 2. Org Chem Front 2022. [DOI: 10.1039/d1qo01942b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A formal dual C(sp2)–H cross-dehydrogenative C–O bond formation reaction between phenols and naphthylamine derivatives to construct diaryl ethers has been developed under mild conditions.
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Affiliation(s)
- Muhammad Adnan Bashir
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Langyu Tang
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Longjie Li
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Huaibin Yu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Weijun Yao
- Department of Chemistry, Zhejiang Sci-Tech University, China
| | - Guojiao Wu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Fangrui Zhong
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
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12
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Giofrè S, Keller M, Lo Presti L, Beccalli EM, Molteni L. Switchable Oxidative Reactions of N-allyl-2-Aminophenols: Palladium-Catalyzed Alkoxyacyloxylation vs an Intramolecular Diels-Alder Reaction. Org Lett 2021; 23:7698-7702. [PMID: 34570517 PMCID: PMC8524420 DOI: 10.1021/acs.orglett.1c02539] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
The Pd(II)-catalyzed
reaction of N-allyl-2-aminophenols
in the presence of PhI(OCOR)2 as the oxidant resulted in
an alkoxyacyloxylation process, with the formation of functionalized
dihydro-1,4-benzoxazines. The reaction performed in the absence of
palladium catalyst switched to an intramolecular Diels–Alder
reaction (IMDA) pathway, which was the result of an oxidative dearomatization
of the 2-aminophenol, nucleophilic addition, and Diels–Alder
reaction cascade, highlighting the role of the oxidant as both a nucleophilic
donor and an oxidizing agent.
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Affiliation(s)
- Sabrina Giofrè
- DISFARM, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano, Via Venezian 21, 20133 Milano, Italy
| | - Manfred Keller
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, 79104 Freiburg im Breisgau, Germany
| | - Leonardo Lo Presti
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy
| | - Egle M Beccalli
- DISFARM, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano, Via Venezian 21, 20133 Milano, Italy
| | - Letizia Molteni
- DISFARM, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano, Via Venezian 21, 20133 Milano, Italy
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13
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Wang B, Liu Z, Tong Z, Gao B, Ding H. Asymmetric Total Syntheses of 8,9‐Seco‐
ent
‐kaurane Diterpenoids Enabled by an Electrochemical ODI‐[5+2] Cascade. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104410] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Bingnan Wang
- Department of Chemistry Zhejiang University Hangzhou 310058 China
| | - Zhaobo Liu
- Department of Chemistry Zhejiang University Hangzhou 310058 China
| | - Zhenzhong Tong
- Department of Chemistry Zhejiang University Hangzhou 310058 China
| | - Beiling Gao
- Department of Chemistry Zhejiang University Hangzhou 310058 China
| | - Hanfeng Ding
- Department of Chemistry Zhejiang University Hangzhou 310058 China
- State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China
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14
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Wang B, Liu Z, Tong Z, Gao B, Ding H. Asymmetric Total Syntheses of 8,9-Seco-ent-kaurane Diterpenoids Enabled by an Electrochemical ODI-[5+2] Cascade. Angew Chem Int Ed Engl 2021; 60:14892-14896. [PMID: 33900670 DOI: 10.1002/anie.202104410] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Indexed: 12/11/2022]
Abstract
An electrochemical ODI-[5+2] cascade reaction was developed which enables the rapid assembly of diversely functionalized bicyclo[3.2.1]octadienones from sensitive ethynylphenols. By combining a directed retro-aldol/aldol process, a [2,3]-sigmatropic rearrangement, and an Al(O-iPr)3 -promoted reductive 1,3-transposition, the asymmetric total syntheses of five 8,9-seco-ent-kauranoids-(-)-shikoccin, (-)-O-methylshikoccin, (-)-epoxyshikoccin, (+)-O-methylepoxyshikoccin, and (+)-rabdo-hakusin-have been achieved in a concise and efficient manner.
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Affiliation(s)
- Bingnan Wang
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Zhaobo Liu
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Zhenzhong Tong
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Beiling Gao
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Hanfeng Ding
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
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15
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Song W, Ko J, Choi YH, Hwang NS. Recent advancements in enzyme-mediated crosslinkable hydrogels: In vivo-mimicking strategies. APL Bioeng 2021; 5:021502. [PMID: 33834154 PMCID: PMC8018798 DOI: 10.1063/5.0037793] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 03/03/2021] [Indexed: 12/19/2022] Open
Abstract
Enzymes play a central role in fundamental biological processes and have been traditionally used to trigger various processes. In recent years, enzymes have been used to tune biomaterial responses and modify the chemical structures at desired sites. These chemical modifications have allowed the fabrication of various hydrogels for tissue engineering and therapeutic applications. This review provides a comprehensive overview of recent advancements in the use of enzymes for hydrogel fabrication. Strategies to enhance the enzyme function and improve biocompatibility are described. In addition, we describe future opportunities and challenges for the production of enzyme-mediated crosslinkable hydrogels.
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Affiliation(s)
- Wonmoon Song
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Junghyeon Ko
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Young Hwan Choi
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Nathaniel S. Hwang
- Author to whom correspondence should be addressed:. Tel.: 82-2-880-1635. Fax: 82-2-880-7295
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16
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Smolyaninov IV, Fukin GK, Berberova NT, Poddel’sky AI. Triphenylantimony(V) Catecholates of the Type (3-RS-4,6-DBCat)SbPh 3-Catechol Thioether Derivatives: Structure, Electrochemical Properties, and Antiradical Activity. Molecules 2021; 26:2171. [PMID: 33918799 PMCID: PMC8069174 DOI: 10.3390/molecules26082171] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/07/2021] [Accepted: 04/08/2021] [Indexed: 11/16/2022] Open
Abstract
A new series of triphenylantimony(V) 3-alkylthio/arylthio-substituted 4,6-di-tert-butylcatecholates of the type (3-RS-4,6-DBCat)SbPh3, where R = n-butyl (1), n-hexyl (2), n-octyl (3), cyclopentyl (4), cyclohexyl (5), benzyl (6), phenyl (7), and naphthyl-2 (8), were synthesized from the corresponding catechol thioethers and Ph3SbBr2 in the presence of a base. The crystal structures of 1, 2, 3, and 5 were determined by single-crystal X-ray analysis. The coordination polyhedron of 1-3 is better described as a tetragonal pyramid with a different degree of distortion, while that for 5- was a distorted trigonal bipyramid (τ = 0.014, 0.177, 0.26, 0.56, respectively). Complexes demonstrated different crystal packing of molecules. The electrochemical oxidation of the complexes involved the catecholate group as well as the thioether linker. The introduction of a thioether fragment into the aromatic ring of catechol ligand led to a shift in the potential of the "catechol/o-semiquinone" redox transition to the anodic region, which indicated the electron-withdrawing nature of the RS group. The radical scavenging activity of the complexes was determined in the reaction with DPPH radical.
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Affiliation(s)
- Ivan V. Smolyaninov
- Department of Chemistry, Astrakhan State Technical University, 16 Tatisheva Str., 414056 Astrakhan, Russia; (I.V.S.); (N.T.B.)
| | - Georgy K. Fukin
- G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 Tropinina Str., 603137 Nizhny Novgorod, Russia;
| | - Nadezhda T. Berberova
- Department of Chemistry, Astrakhan State Technical University, 16 Tatisheva Str., 414056 Astrakhan, Russia; (I.V.S.); (N.T.B.)
| | - Andrey I. Poddel’sky
- G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 Tropinina Str., 603137 Nizhny Novgorod, Russia;
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17
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Xiao X, Wengryniuk SE. Recent Advances in the Selective Oxidative Dearomatization of Phenols to o-Quinones and o-Quinols with Hypervalent Iodine Reagents. Synlett 2021; 32:752-762. [PMID: 34334960 PMCID: PMC8323659 DOI: 10.1055/s-0037-1610760] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
ortho-Quinones are valuable molecular frameworks with diverse applications across biology, materials, organic synthesis, catalysis, and coordination chemistry. Despite their broad utility, their synthesis remains challenging, in particular via the direct oxidation of readily accessible phenols, due to the need to affect regioselective ortho oxidation coupled with the sensitivity of the resulting o-quinone products. The perspective looks at the emergence of I(V) hypervalent iodine reagents as an effective class of oxidants for regioselective o-quinone synthesis. The application of these reagents in regioselective phenol oxidation to both o-quinones and o-quinols will be discussed, including a recent report from our laboratory on the first method for the oxidation of electron-deficient phenols using a novel nitrogen-ligated I(V) reagent. Also included are select examples of total syntheses utilizing this methodology as well as recent advancements in chiral I(V) reagent design for asymmetric phenol dearomatization.
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Affiliation(s)
- Xiao Xiao
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. of China
- Department of Chemistry, Temple University, 1901 North 13 Street, Philadelphia, PA, 19122, USA
| | - Sarah E Wengryniuk
- Department of Chemistry, Temple University, 1901 North 13 Street, Philadelphia, PA, 19122, USA
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18
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Shimizu M, Yamamoto T, Shindo H, Mizota I, Zhu Y. 2,3-Dimethoxy-2,3-dimethyl-1,4-dioxane as a useful precursor to 2,3-dimethylene-1,4-dioxane for [4+2] cycloaddition reaction. RSC Adv 2021; 11:7972-7980. [PMID: 35423349 PMCID: PMC8695070 DOI: 10.1039/d1ra00329a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 02/11/2021] [Indexed: 11/24/2022] Open
Abstract
2,3-Dimethoxy-2,3-dimethyl-1,4-dioxane readily prepared from biacetyl serves as a stable precursor to 2,3-dimethylene-1,4-dioxane which undergoes a [4+2] cycloaddition reaction with dienophiles to give functionalized cyclohexene derivatives. The cycloaddition adducts obtained by the present procedure are transformed into potentially useful intermediates for biologically important materials. 2,3-Dimethoxy-2,3-dimethyl-1,4-dioxane serves as a stable precursor to 2,3-dimethylene-1,4-dioxane which undergoes a cycloaddition with dienophiles. The adducts are transformed into useful intermediates for biologically important materials.![]()
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Affiliation(s)
- Makoto Shimizu
- School of Energy Science and Engineering
- Nanjing Tech University
- Nanjing 211816
- China
- Department of Chemistry for Materials
| | - Toshihiro Yamamoto
- Department of Chemistry for Materials
- Graduate School of Engineering
- Mie University
- Tsu
- Japan
| | - Hiroaki Shindo
- Department of Chemistry for Materials
- Graduate School of Engineering
- Mie University
- Tsu
- Japan
| | - Isao Mizota
- Department of Chemistry for Materials
- Graduate School of Engineering
- Mie University
- Tsu
- Japan
| | - Yusong Zhu
- School of Energy Science and Engineering
- Nanjing Tech University
- Nanjing 211816
- China
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19
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Zhang Q, Li Q, Wang C. Dual C–H activation: Rh(iii)-catalyzed cascade π-extended annulation of 2-arylindole with benzoquinone. RSC Adv 2021; 11:13030-13033. [PMID: 35423833 PMCID: PMC8697334 DOI: 10.1039/d1ra01779a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 03/26/2021] [Indexed: 12/31/2022] Open
Abstract
A rhodium-catalyzed, N–H free indole directed cyclization reaction of benzoquinone via a dual C–H activation strategy is disclosed. This protocol has a good functional group tolerance and affords useful indole-fused heterocylces. Besides, it is insensitive to moisture, commercially available solvent can be directly used and work quite well for this transformation. A Rh-catalyzed cascade annulation of N–H free 2-arylindole with benzoquinone via dual C–H activation strategy was reported.![]()
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Affiliation(s)
- Qijing Zhang
- Department of Chemistry
- College of Chemistry and Materials Science
- Jinan University
- Guangzhou
- China
| | - Qianrong Li
- Department of Chemistry
- College of Chemistry and Materials Science
- Jinan University
- Guangzhou
- China
| | - Chengming Wang
- Department of Chemistry
- College of Chemistry and Materials Science
- Jinan University
- Guangzhou
- China
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20
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Alkylation of catechol with cyclohexene. Novel sterically hindered o-quinones and catechols. Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-3051-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Ito S, Sugumaran M, Wakamatsu K. Chemical Reactivities of ortho-Quinones Produced in Living Organisms: Fate of Quinonoid Products Formed by Tyrosinase and Phenoloxidase Action on Phenols and Catechols. Int J Mol Sci 2020; 21:ijms21176080. [PMID: 32846902 PMCID: PMC7504153 DOI: 10.3390/ijms21176080] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 08/19/2020] [Accepted: 08/20/2020] [Indexed: 12/27/2022] Open
Abstract
Tyrosinase catalyzes the oxidation of phenols and catechols (o-diphenols) to o-quinones. The reactivities of o-quinones thus generated are responsible for oxidative browning of plant products, sclerotization of insect cuticle, defense reaction in arthropods, tunichrome biochemistry in tunicates, production of mussel glue, and most importantly melanin biosynthesis in all organisms. These reactions also form a set of major reactions that are of nonenzymatic origin in nature. In this review, we summarized the chemical fates of o-quinones. Many of the reactions of o-quinones proceed extremely fast with a half-life of less than a second. As a result, the corresponding quinone production can only be detected through rapid scanning spectrophotometry. Michael-1,6-addition with thiols, intramolecular cyclization reaction with side chain amino groups, and the redox regeneration to original catechol represent some of the fast reactions exhibited by o-quinones, while, nucleophilic addition of carboxyl group, alcoholic group, and water are mostly slow reactions. A variety of catecholamines also exhibit side chain desaturation through tautomeric quinone methide formation. Therefore, quinone methide tautomers also play a pivotal role in the fate of numerous o-quinones. Armed with such wide and dangerous reactivity, o-quinones are capable of modifying the structure of important cellular components especially proteins and DNA and causing severe cytotoxicity and carcinogenic effects. The reactivities of different o-quinones involved in these processes along with special emphasis on mechanism of melanogenesis are discussed.
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Affiliation(s)
- Shosuke Ito
- Department of Chemistry, Fujita Health University School of Medical Sciences, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
- Correspondence: (S.I.); (K.W.); Tel.: +81-562-93-9849 (S.I. & K.W.); Fax: +81-562-93-4595 (S.I. & K.W.)
| | - Manickam Sugumaran
- Department of Biology, University of Massachusetts, Boston, MA 02125, USA;
| | - Kazumasa Wakamatsu
- Department of Chemistry, Fujita Health University School of Medical Sciences, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
- Correspondence: (S.I.); (K.W.); Tel.: +81-562-93-9849 (S.I. & K.W.); Fax: +81-562-93-4595 (S.I. & K.W.)
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22
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Xiang L, Liu X, He Y, Zhang K. Eye-Readable Dynamic Covalent Click Reaction and Its Application in Polymer Synthesis. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00408] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lue Xiang
- Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xianfeng Liu
- Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuxiang He
- Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ke Zhang
- Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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23
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Anary-Abbasinejad M, Nejad-Shahrokhabadi F. Reaction of barbituric/thiobarbituric acid with phosphines or phosphites and dialkyl acetylenedicarboxylates for synthesis of phosphorus zwitterions or phosphonate derivatives. PHOSPHORUS SULFUR 2020. [DOI: 10.1080/10426507.2019.1709460] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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24
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Bashir MA, Zuo H, Lu X, Wu Y, Zhong F. Harnessing structurally unbiased ortho-benzoquinone monoimine for biomimetic oxidative [4+2] cycloaddition with enamines. Chem Commun (Camb) 2020; 56:5965-5968. [DOI: 10.1039/d0cc01813a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reported herein is the first catalytic oxidative [4+2] cycloaddition of 2-aminophenols with cyclic enamines.
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Affiliation(s)
- Muhammad Adnan Bashir
- Key laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
| | - Honghua Zuo
- Key laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
| | - Xunbo Lu
- Key laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
| | - Yuzhou Wu
- Key laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
| | - Fangrui Zhong
- Key laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
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25
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Radhika S, Saranya S, Harry NA, Anilkumar G. Recent Advances and Prospects in the Chemistry of
o
‐Benzoquinones. ChemistrySelect 2019. [DOI: 10.1002/slct.201902637] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sankaran Radhika
- School of Chemical SciencesMahatma Gandhi University, Priyadarsini Hills P.O., Kottayam Kerala 686560 India
| | - Salim Saranya
- School of Chemical SciencesMahatma Gandhi University, Priyadarsini Hills P.O., Kottayam Kerala 686560 India
| | - Nissy Ann Harry
- School of Chemical SciencesMahatma Gandhi University, Priyadarsini Hills P.O., Kottayam Kerala 686560 India
| | - Gopinathan Anilkumar
- School of Chemical SciencesMahatma Gandhi University, Priyadarsini Hills P.O., Kottayam Kerala 686560 India
- Advanced Molecular Materials Research Centre (AMMRC)Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam Kerala 686560 India
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26
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Kumar Dende S, Doddipalla R, Reddy Nimmareddy R, Rapolu T, Babu Korupolu R, Leleti KR. Synthesis of Barleriaquinones-I & II. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1606242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Satheesh Kumar Dende
- Medicinal Chemistry Division, GVK Biosciences Private Limited, Hyderabad, India
- Department of Engineering Chemistry, Andhra University College of Engineering (A), Visakhapatnam, India
| | - Raju Doddipalla
- Medicinal Chemistry Division, GVK Biosciences Private Limited, Hyderabad, India
| | - Rajashekar Reddy Nimmareddy
- Medicinal Chemistry Division, GVK Biosciences Private Limited, Hyderabad, India
- Department of Engineering Chemistry, Andhra University College of Engineering (A), Visakhapatnam, India
| | - Thirupathi Rapolu
- Medicinal Chemistry Division, GVK Biosciences Private Limited, Hyderabad, India
- Department of Engineering Chemistry, Andhra University College of Engineering (A), Visakhapatnam, India
| | - Raghu Babu Korupolu
- Department of Engineering Chemistry, Andhra University College of Engineering (A), Visakhapatnam, India
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27
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Zhang LL, Da BC, Xiang SH, Zhu S, Yuan ZY, Guo Z, Tan B. Organocatalytic double arylation of 3-isothiocyanato oxindoles: Stereocontrolled synthesis of complex spirooxindoles. Tetrahedron 2019. [DOI: 10.1016/j.tet.2018.11.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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Lin Y, Ye J, Zhang W, Gao Y, Chen H. Catalytic Oxidative Coupling Cyclization for Construction of Benzofuroindolenines under Mild Reaction Conditions. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801184] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yuqi Lin
- College of ChemistryFuzhou University, Fuzhou Fujian 350116 People's Republic of China
| | - Jinxiang Ye
- College of ChemistryFuzhou University, Fuzhou Fujian 350116 People's Republic of China
| | - Wenting Zhang
- College of ChemistryFuzhou University, Fuzhou Fujian 350116 People's Republic of China
| | - Yu Gao
- College of ChemistryFuzhou University, Fuzhou Fujian 350116 People's Republic of China
| | - Haijun Chen
- College of ChemistryFuzhou University, Fuzhou Fujian 350116 People's Republic of China
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29
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Langis-Barsetti S, Maris T, Wuest JD. Triptycene 1,2-Quinones and Quinols: Permeable Crystalline Redox-Active Molecular Solids. J Org Chem 2018; 83:15426-15437. [DOI: 10.1021/acs.joc.8b02706] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Thierry Maris
- Département de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
| | - James D. Wuest
- Département de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
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30
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Nair V, Menon RS. Nucleophile‐Initiated Catalytic and Multicomponent Reactions. CHEM REC 2018; 19:347-361. [DOI: 10.1002/tcr.201800027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 06/08/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Vijay Nair
- Organic Chemistry SectionCSIR-National Institute for Interdisciplinary Science and Technology Trivandrum 695 019 India
| | - Rajeev S. Menon
- Department of ChemistryCentral University of Haryana Mahendergarh 123 031, Haryana India
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31
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Ping L, Bak J, Kim Y, Bouffard J. Addition, Substitution, and Ring-Contraction Reactions of Quinones with N-Heterocyclic Carbenes. J Org Chem 2018; 83:9240-9249. [DOI: 10.1021/acs.joc.8b01236] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lucy Ping
- Department of Chemistry and Nano Science (BK 21 Plus), Ewha Womans University, 03760 Seoul, Korea
| | - JungMin Bak
- Department of Chemistry and Nano Science (BK 21 Plus), Ewha Womans University, 03760 Seoul, Korea
| | - Youngmee Kim
- Department of Chemistry and Nano Science (BK 21 Plus), Ewha Womans University, 03760 Seoul, Korea
| | - Jean Bouffard
- Department of Chemistry and Nano Science (BK 21 Plus), Ewha Womans University, 03760 Seoul, Korea
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32
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Subramanian P, Kaliappan KP. Transition-Metal-Free Multicomponent Approach to Stereoenriched Cyclopentyl-isoxazoles through C-C Bond Cleavage. Chem Asian J 2018; 13:2031-2039. [PMID: 29920954 DOI: 10.1002/asia.201800608] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 06/11/2018] [Indexed: 01/01/2023]
Abstract
An efficient multicomponent reaction for the synthesis of stereoenriched cyclopentyl-isoxazoles from camphor-derived α-oximes, alkynes, and MeOH is reported. Our method involved a series of cascade transformations, including the in situ generation of an IIII catalyst, which catalyzed the addition of MeOH to a sterically hindered ketone. Oxidation of the oxime, and rearrangement of the α-hydroxyiminium ion generated a nitrile oxide in situ, which, upon [3+2] cycloaddition reaction with an alkyne, delivered the regioselective product. This reaction was very selective for the syn-oxime. This multicomponent approach was also extended to the synthesis of a new glycoconjugate, camphoric ester-isoxazole C-galactoside.
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Affiliation(s)
- Parthasarathi Subramanian
- Department of Chemistry, Indian Institute of Technology Bombay, Main Gate Road, Powai, Mumbai, 400076, India
| | - Krishna P Kaliappan
- Department of Chemistry, Indian Institute of Technology Bombay, Main Gate Road, Powai, Mumbai, 400076, India
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33
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Transformations of S-substituted 5,7-dimethyl-4а,5а-diphenyl-3-thioxoperhydroimidazo[4,5-e]-1,2,4-triazin-2-ones under treatment of 1,2-benzoquinones and photochemical properties of reaction products. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.03.056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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34
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Rigodanza F, Đorđević L, Arcudi F, Prato M. Customizing the Electrochemical Properties of Carbon Nanodots by Using Quinones in Bottom-Up Synthesis. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801707] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Francesco Rigodanza
- Department of Chemical and Pharmaceutical Sciences, INSTM UdR Trieste; University of Trieste; Via Licio Giorgeri 1 Trieste 34127 Italy
| | - Luka Đorđević
- Department of Chemical and Pharmaceutical Sciences, INSTM UdR Trieste; University of Trieste; Via Licio Giorgeri 1 Trieste 34127 Italy
| | - Francesca Arcudi
- Department of Chemical and Pharmaceutical Sciences, INSTM UdR Trieste; University of Trieste; Via Licio Giorgeri 1 Trieste 34127 Italy
| | - Maurizio Prato
- Department of Chemical and Pharmaceutical Sciences, INSTM UdR Trieste; University of Trieste; Via Licio Giorgeri 1 Trieste 34127 Italy
- Carbon Nanobiotechnology Laboratory; CIC biomaGUNE; Paseo de Miramón 182 20009 Donostia-San Sebastian Spain
- Basque Fdn Sci, Ikerbasque; Bilbao 48013 Spain
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35
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Rigodanza F, Đorđević L, Arcudi F, Prato M. Customizing the Electrochemical Properties of Carbon Nanodots by Using Quinones in Bottom-Up Synthesis. Angew Chem Int Ed Engl 2018; 57:5062-5067. [DOI: 10.1002/anie.201801707] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 02/19/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Francesco Rigodanza
- Department of Chemical and Pharmaceutical Sciences, INSTM UdR Trieste; University of Trieste; Via Licio Giorgeri 1 Trieste 34127 Italy
| | - Luka Đorđević
- Department of Chemical and Pharmaceutical Sciences, INSTM UdR Trieste; University of Trieste; Via Licio Giorgeri 1 Trieste 34127 Italy
| | - Francesca Arcudi
- Department of Chemical and Pharmaceutical Sciences, INSTM UdR Trieste; University of Trieste; Via Licio Giorgeri 1 Trieste 34127 Italy
| | - Maurizio Prato
- Department of Chemical and Pharmaceutical Sciences, INSTM UdR Trieste; University of Trieste; Via Licio Giorgeri 1 Trieste 34127 Italy
- Carbon Nanobiotechnology Laboratory; CIC biomaGUNE; Paseo de Miramón 182 20009 Donostia-San Sebastian Spain
- Basque Fdn Sci, Ikerbasque; Bilbao 48013 Spain
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36
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Ito S, Wakamatsu K, Sarna T. Photodegradation of Eumelanin and Pheomelanin and Its Pathophysiological Implications. Photochem Photobiol 2017; 94:409-420. [PMID: 28873228 DOI: 10.1111/php.12837] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 08/21/2017] [Indexed: 12/11/2022]
Abstract
Eumelanin is photoprotective for pigmented tissues while pheomelanin is phototoxic. In this review, we summarize current understanding of how eumelanin and pheomelanin structures are modified by ultraviolet A (UVA) and also by visible light and how reactive oxygen species participate in those processes. Alkaline hydrogen peroxide oxidation was employed to characterize eumelanin and benzothiazole-type pheomelanin, giving pyrrole-2,3,5-tricarboxylic acid (PTCA) and thiazole-2,4,5-tricarboxylic acid (TTCA), respectively. Reductive hydrolysis with hydroiodic acid gives 4-amino-3-hydroxyphenylalanine (4-AHP) from the benzothiazine moiety of pheomelanin. The results show that the photoaging of eumelanin gives rise to free PTCA (produced by peroxidation in situ) and pyrrole-2,3,4,5-tetracarboxylic acid (PTeCA, produced by cross-linking). The TTCA/4-AHP ratio increases with photoaging, indicating the conversion of benzothiazine to the benzothiazole moiety. Analysis of those markers and their ratios show that both eumelanin and pheomelanin in human retinal pigment epithelium melanosomes undergo extensive structural modifications due to their lifelong exposure to blue light. Using synthetic melanins, we also found that singlet oxygen, in addition to superoxide anions, is photogenerated and quenched upon UVA irradiation. The (patho)physiological significance of those findings is discussed in relation to the tanning process, to melanomagenesis in the skin and to age-related macular degeneration in the eyes.
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Affiliation(s)
- Shosuke Ito
- Department of Chemistry, Fujita Health University School of Health Sciences, Aichi, Japan
| | - Kazumasa Wakamatsu
- Department of Chemistry, Fujita Health University School of Health Sciences, Aichi, Japan
| | - Tadeusz Sarna
- Department of Biophysics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
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37
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Basak S, Mal D. Applications of [4+2] Anionic Annulation and Carbonyl-Ene Reaction in the Synthesis of Anthraquinones, Tetrahydroanthraquinones, and Pyranonaphthoquinones. J Org Chem 2017; 82:11035-11051. [DOI: 10.1021/acs.joc.7b01987] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shyam Basak
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Dipakranjan Mal
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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38
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Zhang MY, Barrow RA. Accessing Polyoxygenated Dibenzofurans via the Union of Phenols and o-Benzoquinones: Rapid Syntheses of Metabolites Isolated from Ribes takare. Org Lett 2017; 19:2302-2305. [DOI: 10.1021/acs.orglett.7b00840] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Meng Yao Zhang
- Research School of Chemistry, Australian National University, Acton, ACT 2601, Australia
| | - Russell A. Barrow
- Research School of Chemistry, Australian National University, Acton, ACT 2601, Australia
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39
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Unified biomimetic assembly of voacalgine A and bipleiophylline via divergent oxidative couplings. Nat Chem 2017; 9:793-798. [DOI: 10.1038/nchem.2735] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 01/17/2017] [Indexed: 01/17/2023]
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40
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Ito S, Kikuta M, Koike S, Szewczyk G, Sarna M, Zadlo A, Sarna T, Wakamatsu K. Roles of reactive oxygen species in UVA-induced oxidation of 5,6-dihydroxyindole-2-carboxylic acid-melanin as studied by differential spectrophotometric method. Pigment Cell Melanoma Res 2017; 29:340-51. [PMID: 26920809 DOI: 10.1111/pcmr.12469] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 02/15/2016] [Indexed: 01/30/2023]
Abstract
Eumelanin photoprotects pigmented tissues from ultraviolet (UV) damage. However, UVA-induced tanning seems to result from the photooxidation of preexisting melanin and does not contribute to photoprotection. We investigated the mechanism of UVA-induced degradation of 5,6-dihydroxyindole-2-carboxylic acid (DHICA)-melanin taking advantage of its solubility in a neutral buffer and using a differential spectrophotometric method to detect subtle changes in its structure. Our methodology is suitable for examining the effects of various agents that interact with reactive oxygen species (ROS) to determine how ROS is involved in the UVA-induced oxidative modifications. The results show that UVA radiation induces the oxidation of DHICA to indole-5,6-quinone-2-carboxylic acid in eumelanin, which is then cleaved to form a photodegraded, pyrrolic moiety and finally to form free pyrrole-2,3,5-tricarboxylic acid. The possible involvement of superoxide radical and singlet oxygen in the oxidation was suggested. The generation and quenching of singlet oxygen by DHICA-melanin was confirmed by direct measurements of singlet oxygen phosphorescence.
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Affiliation(s)
- Shosuke Ito
- Department of Chemistry, Fujita Health University School of Health Sciences, Toyoake, Aichi, Japan
| | - Marina Kikuta
- Department of Chemistry, Fujita Health University School of Health Sciences, Toyoake, Aichi, Japan
| | - Shota Koike
- Department of Chemistry, Fujita Health University School of Health Sciences, Toyoake, Aichi, Japan
| | - Grzegorz Szewczyk
- Department of Biophysics, Faculty of Biochemistry, Biophysics, and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Michal Sarna
- Department of Biophysics, Faculty of Biochemistry, Biophysics, and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Andrzej Zadlo
- Department of Biophysics, Faculty of Biochemistry, Biophysics, and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Tadeusz Sarna
- Department of Biophysics, Faculty of Biochemistry, Biophysics, and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Kazumasa Wakamatsu
- Department of Chemistry, Fujita Health University School of Health Sciences, Toyoake, Aichi, Japan
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41
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Thomas J, Jana S, Sonawane M, Fiey B, Balzarini J, Liekens S, Dehaen W. A new four-component reaction involving the Michael addition and the Gewald reaction, leading to diverse biologically active 2-aminothiophenes. Org Biomol Chem 2017; 15:3892-3900. [DOI: 10.1039/c7ob00707h] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A Gewald-four component reaction has been successfully developed for the synthesis of a series of compounds containing an indole and a 2-aminothiophene moiety separated by a methylene spacer having anti-proliferative activity.
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Affiliation(s)
- Joice Thomas
- Molecular Design and Synthesis
- Department of Chemistry
- KU Leuven
- 3001 Leuven
- Belgium
| | - Sampad Jana
- Molecular Design and Synthesis
- Department of Chemistry
- KU Leuven
- 3001 Leuven
- Belgium
| | - Mahendra Sonawane
- Molecular Design and Synthesis
- Department of Chemistry
- KU Leuven
- 3001 Leuven
- Belgium
| | - Bert Fiey
- Molecular Design and Synthesis
- Department of Chemistry
- KU Leuven
- 3001 Leuven
- Belgium
| | - Jan Balzarini
- Department of Microbiology and Immunology
- Rega Institute for Medical Research
- Herestraat 49
- KU Leuven
- B-3000 Leuven
| | - Sandra Liekens
- Department of Microbiology and Immunology
- Rega Institute for Medical Research
- Herestraat 49
- KU Leuven
- B-3000 Leuven
| | - Wim Dehaen
- Molecular Design and Synthesis
- Department of Chemistry
- KU Leuven
- 3001 Leuven
- Belgium
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42
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Panahi F, Niknam E, Sarikhani S, Haghighi F, Khalafi-Nezhad A. Multicomponent synthesis of new curcumin-based pyrano[2,3-d]pyrimidine derivatives using a nano-magnetic solid acid catalyst. NEW J CHEM 2017. [DOI: 10.1039/c7nj02370g] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An novel nano-magnetic solid acid catalyst was used for the efficient synthesis of new curcumin-based pyrano[2,3-d]pyrimidine derivatives via a multicomponent reaction under mild conditions.
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Affiliation(s)
- Farhad Panahi
- Chemistry Department
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
| | - Esmaeil Niknam
- Chemistry Department
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
| | - Samira Sarikhani
- Chemistry Department
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
| | - Fatemeh Haghighi
- Chemistry Department
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
| | - Ali Khalafi-Nezhad
- Chemistry Department
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
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43
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Khodam Hazrati M, L. Hadipour N. A DFT study on the functionalization of C60 fullerene with 1,2-benzoquinone. COMPUT THEOR CHEM 2016. [DOI: 10.1016/j.comptc.2016.11.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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44
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Andraos J. A new paradigm for designing ring construction strategies for green organic synthesis: implications for the discovery of multicomponent reactions to build molecules containing a single ring. Beilstein J Org Chem 2016; 12:2420-2442. [PMID: 28144310 PMCID: PMC5238618 DOI: 10.3762/bjoc.12.236] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 10/26/2016] [Indexed: 11/23/2022] Open
Abstract
A new way of developing novel synthesis strategies for the construction of monocyclic rings found in organic molecules is presented. The method is based on the visual application of integer partitioning to chemical structures. Two problems are addressed: (1) the determination of the total number of possible ways to construct a given ring by 2-, 3-, and 4-component couplings; and (2) the systematic enumeration of those possibilities. The results of the method are illustrated using cyclohexanone, pyrazole, and the Biginelli adduct as target ring systems with a view to discover new and greener strategies for their construction using multicomponent reactions. The application of the method is also extended to various heterocycles found in many natural products and pharmaceuticals.
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Affiliation(s)
- John Andraos
- CareerChem, 504-1129 Don Mills Road, Toronto, ON M3B 2W4 Canada
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45
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Bhojgude SS, Bhunia A, Biju AT. Employing Arynes in Diels-Alder Reactions and Transition-Metal-Free Multicomponent Coupling and Arylation Reactions. Acc Chem Res 2016; 49:1658-70. [PMID: 27560296 DOI: 10.1021/acs.accounts.6b00188] [Citation(s) in RCA: 243] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Arynes are highly reactive intermediates having several applications in organic synthesis for the construction of various ortho-disubstituted arenes. Traditionally, arynes are generated in solution from haloarenes under strongly basic conditions. However, the scopes of many of the aryne reactions are limited because of the harsh conditions used for their generation. The renaissance of interest in aryne chemistry is mainly due to the mild conditions for their generation by the fluoride-induced 1,2-elimination of 2-(trimethylsilyl)aryl triflates. This Account is focused on the Diels-Alder reaction of arynes and their transition-metal-free application in multicomponent couplings as well as arylation reactions. The Diels-Alder reaction of arynes is a powerful tool for constructing benzo-fused carbocycles and heterocycles. In 2012, we developed an efficient, broad-scope, and scalable Diels-Alder reaction of pentafulvenes with arynes affording benzonorbornadiene derivatives. Subsequently, we accomplished the Diels-Alder reaction of arynes with dienes such as 1,2-benzoquinones and tropones. Moreover, we uncovered a transition-metal-free protocol for the synthesis of 9,10-dihydrophenanthrenes by the reaction of arynes with styrenes that proceeds via a Diels-Alder/ene-reaction cascade. In addition, we demonstrated the reaction of arynes with indene/benzofurans, which proceeds via a tandem [4 + 2]/[2 + 2] sequence. Multicomponent coupling (MCC) involving arynes mainly comprises the initial addition of a nucleophile to the aryne followed by interception of the aryl anion intermediate with an electrophile (provided the nucleophilic and electrophilic moieties do not belong to the same molecule). We have disclosed aryne MCCs initiated by N-heterocycles such as (iso)quinoline, pyridine, and aziridines. When (iso)quinoline is used as the nucleophilic trigger and N-substituted isatin as the third component, the reaction affords spirooxazino(iso)quinolines via 1,4-dipolar intermediates. Unexpectedly, using pyridine affords indolin-2-ones, where the reaction proceeds via the pyridylidene intermediate. Additionally, we developed the phosphine-triggered aryne MCCs for the synthesis of functionalized benzooxaphospholes. In another phase of our work, we studied the synthetic utility of CO2 as a one-carbon synthon in aryne MCCs for the synthesis of phthalimides. Engaging arynes as an aryl source is one of the transition-metal-free methods for arylation reactions. We have demonstrated the N-arylation of aromatic tertiary amines and O-arylation of aliphatic alcohols using arynes. It is anticipated that the chemistry of arynes will continue to prosper and will lead to surprising developments for the synthesis of various 1,2-disubstituted arenes of molecular complexity and structural diversity. Future challenges in this area include the utility of arynes in enantioselective transformations and the synthesis and reactions of exotic heterocyclic arynes.
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Affiliation(s)
- Sachin Suresh Bhojgude
- Organic
Chemistry Division, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune-411008, Maharashtra, India
| | - Anup Bhunia
- Organic
Chemistry Division, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune-411008, Maharashtra, India
| | - Akkattu T. Biju
- Organic
Chemistry Division, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune-411008, Maharashtra, India
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46
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Li Y, Jongberg S, Andersen ML, Davies MJ, Lund MN. Quinone-induced protein modifications: Kinetic preference for reaction of 1,2-benzoquinones with thiol groups in proteins. Free Radic Biol Med 2016; 97:148-157. [PMID: 27212016 DOI: 10.1016/j.freeradbiomed.2016.05.019] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 05/11/2016] [Accepted: 05/18/2016] [Indexed: 12/23/2022]
Abstract
Oxidation of polyphenols to quinones serves as an antioxidative mechanism, but the resulting quinones may induce damage to proteins as they react through a Michael addition with nucleophilic groups, such as thiols and amines to give protein adducts. In this study, rate constants for the reaction of 4-methylbenzoquinone (4MBQ) with proteins, thiol and amine compounds were determined under pseudo first-order conditions by UV-vis stopped-flow spectrophotometry. The chemical structures of the adducts were identified by LC-ESI-MS/MS. Proteins with free thiols were rapidly modified by 4MBQ with apparent second order rate constants, k2 of (3.1±0.2)×10(4)M(-1)s(-1) for bovine serum albumin (BSA) and (4.8±0.2)×10(3)M(-1)s(-1) for human serum albumin at pH 7.0. These values are at least 12-fold greater than that for α-lactalbumin (4.0±0.2)×10(2)M(-1)s(-1), which does not contain any free thiols. Reaction of Cys-34 of BSA with N-ethylmaleimide reduced the thiol concentration by ~59%, which resulted in a decrease in k2 by a similar percentage, consistent with rapid adduction at Cys-34. Reaction of 4MBQ with amines (Gly, Nα-acetyl-l-Lys, Nε-acetyl-l-Lys and l-Lys) and the guanidine group of Nα-acetyl-l-Arg was at least 5×10(5) slower than with low-molecular-mass thiols (l-Cys, Nα-acetyl-l-Cys, glutathione). The thiol-quinone interactions formed colorless thiol-phenol products via an intermediate adduct, while the amine-quinone interactions generated colored amine-quinone products that require oxygen involvement. These data provide strong evidence for rapid modification of protein thiols by quinone species which may be of considerable significance for biological and food systems.
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Affiliation(s)
- Yuting Li
- School of Food Science and Technology, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China; Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 30, 1958 Frederiksberg, Denmark; Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou, China.
| | - Sisse Jongberg
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 30, 1958 Frederiksberg, Denmark.
| | - Mogens L Andersen
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 30, 1958 Frederiksberg, Denmark.
| | - Michael J Davies
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen, Denmark.
| | - Marianne N Lund
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 30, 1958 Frederiksberg, Denmark; Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen, Denmark.
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47
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Taneja N, Peddinti RK. Iodobenzene and m-chloroperbenzoic acid mediated oxidative dearomatization of phenols. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.07.078] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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48
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Zhang YF, Tian WF, Cao XP, Kuck D, Chow HF. o-Quinones Derived from Tribenzotriquinacenes: Functionalization of Inner Bay Positions and Use for Single-Wing Extensions. J Org Chem 2016; 81:2308-19. [DOI: 10.1021/acs.joc.5b02806] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yu-Fei Zhang
- State
Key Laboratory of Applied Organic Chemistry and College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Wan-Fa Tian
- State
Key Laboratory of Applied Organic Chemistry and College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Xiao-Ping Cao
- State
Key Laboratory of Applied Organic Chemistry and College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Dietmar Kuck
- Department
of Chemistry and Center for Molecular Materials (CM2), Bielefeld University, 33615 Bielefeld, Germany
| | - Hak-Fun Chow
- Department
of Chemistry, State Key Laboratory of Synthetic Chemistry and The
Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, Hong Kong
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49
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Dengiz C, Prange C, Gawel P, Trapp N, Ruhlmann L, Boudon C, Diederich F. Push–pull chromophores by reaction of 2,3,5,6-tetrahalo-1,4-benzoquinones with 4-(N,N-dialkylanilino)acetylenes. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.01.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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50
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Somai Magar KB, Xia L, Lee YR. Organocatalyzed benzannulation for the construction of diverse anthraquinones and tetracenediones. Chem Commun (Camb) 2016; 51:8592-5. [PMID: 25858160 DOI: 10.1039/c5cc00623f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient one-pot synthesis of anthraquinones and tetracenediones was achieved via L-proline catalyzed [4+2] cycloaddition of in situ generated azadiene from α,β-unsaturated aldehydes and 1,4-naphthoquinones or 1,4-anthracenedione in good to excellent yield. This protocol constitutes an unprecedented tandem benzannulation that allows one-pot construction of diverse anthraquinones and tetracenediones in the presence of organocatalysts. This methodology was applied successfully to the synthesis of naturally occurring molecules and photochemically interesting phenanthrenequinone derivatives.
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