1
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Liang M, He M, Zhong Z, Wan B, Du Q, Mai S. Catalytic and Base-free Suzuki-type α-Arylation of Cyclic 1,3-Dicarbonyls via a Cyclic Iodonium Ylide Strategy. Angew Chem Int Ed Engl 2024; 63:e202400741. [PMID: 38385585 DOI: 10.1002/anie.202400741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/12/2024] [Accepted: 02/21/2024] [Indexed: 02/23/2024]
Abstract
To date, it remains challenging to achieve a general and catalytic α-arylation of cyclic 1,3-dicarbonyls, particularly ubiquitous heteroaromatic ones. In most cases, the preparation of their medically significant arylated derivatives requires multistep synthetic sequences. Herein, we introduce a new, convenient strategy involving the conversion of cyclic 1,3-dicarbonyls to cyclic iodonium ylides (CIYs), followed by rhodium-catalyzed α-arylation with arylboronic reagents via carbene coupling. This approach is mild, operationally simple, base-free, biocompatible, and exhibits broad substrate scope (>100 examples), especially with respect to various heteroaromatic 1,3-dicarbonyls and ortho-substituted or base-sensitive arylboronic acids. Importantly, owing to the excellent compatibility with various arylboronic acids or boronate esters (ArBpin, ArBneop, or ArBF3K), this method allows the late-stage installation of heterocyclic 1,3-dicarbonyl motifs in highly complex settings. The utility of this transformation is further demonstrated through significantly simplifying the synthesis of several bioactive molecules and natural products.
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Affiliation(s)
- Mingxuan Liang
- Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Mengling He
- Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Zhiqing Zhong
- Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Bei Wan
- Centre of General Practice The Seventh Affiliated Hospital, Southern Medical University, Foshan, 528000, China
| | - Qingfeng Du
- Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
- Centre of General Practice The Seventh Affiliated Hospital, Southern Medical University, Foshan, 528000, China
- Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Shaoyu Mai
- Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
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2
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Fu Z, Wang X, Ren X, Guo Z, Wang C, Zhou CY. Rhodium-Catalyzed C(sp 2)-O Cross Couplings of Diazo Quinones with Phenols to Construct Diaryl Ethers. Org Lett 2024; 26:292-297. [PMID: 38157220 DOI: 10.1021/acs.orglett.3c03969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
The diaryl ether represents a prevalent structural motif found in numerous biologically active molecules. Herein, we describe a dirhodium-catalyzed C(sp2)-O cross coupling reaction between diazo quinones and phenols for the construction of diaryl ethers in moderate to high yields. The reaction proceeds under mild and neutral conditions and is tolerant of various functional groups. The synthetic method has been successfully applied to the concise synthesis of a Navl.7 inhibitor.
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Affiliation(s)
- Zhen Fu
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, China
| | - XiaoKun Wang
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, China
| | - Xiaoyu Ren
- College of Materials Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Shanxi 030024, China
| | - Zhen Guo
- College of Materials Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Shanxi 030024, China
| | - Chengming Wang
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, China
| | - Cong-Ying Zhou
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, China
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3
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Farshadfar K, Hashemi A, Khakpour R, Laasonen K. Kinetics of N 2 Release from Diazo Compounds: A Combined Machine Learning-Density Functional Theory Study. ACS OMEGA 2024; 9:1106-1112. [PMID: 38222626 PMCID: PMC10785077 DOI: 10.1021/acsomega.3c07367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 11/10/2023] [Accepted: 11/28/2023] [Indexed: 01/16/2024]
Abstract
Diazo compounds are commonly employed as carbene precursors in carbene transfer reactions during a variety of functionalization procedures. Release of N2 gas from diazo compounds may lead to carbene formation, and the ease of this process is highly dependent on the characteristics of the substituents located in the vicinity of the diazo moiety. A quantum mechanical density functional theory assisted by machine learning was used to investigate the relationship between the chemical features of diazo compounds and the activation energy required for N2 elimination. Our results suggest that diazo molecules, possessing a higher positive partial charge on the carbene carbon and more negative charge on the terminal nitrogen, encounter a lower energy barrier. A more positive C charge decreases the π-donor ability of the carbene lone pair to the π* orbital of N2, while the more negative N charge is a result of a weak interaction between N2 lone pair and vacant p orbital of the carbene. The findings of this study can pave the way for molecular engineering for the purpose of carbene generation, which serves as a crucial intermediate for many chemical transformations in synthetic chemistry.
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Affiliation(s)
- Kaveh Farshadfar
- Department of Chemistry and Material
Science, School of Chemical Engineering, Aalto University, 02150 Espoo, Finland
| | - Arsalan Hashemi
- Department of Chemistry and Material
Science, School of Chemical Engineering, Aalto University, 02150 Espoo, Finland
| | - Reza Khakpour
- Department of Chemistry and Material
Science, School of Chemical Engineering, Aalto University, 02150 Espoo, Finland
| | - Kari Laasonen
- Department of Chemistry and Material
Science, School of Chemical Engineering, Aalto University, 02150 Espoo, Finland
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4
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Wu M, Lian N, Wu C, Wu X, Chen H, Lin C, Zhou S, Ke F. Metal-free visible-induced C(sp 2)-C(sp 2) coupling of quinoxalin-2( H)-ones via oxidative cleavage of the C-N bond. RSC Adv 2023; 13:18328-18331. [PMID: 37333794 PMCID: PMC10274563 DOI: 10.1039/d3ra03479h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 06/12/2023] [Indexed: 06/20/2023] Open
Abstract
A C(sp2)-C(sp2) reaction between aromatic hydrazines and quinoxalines has been developed through a photocatalytic system. The protocol is established for C(sp2)-N bond cleavage and direct C(sp2)-H functionalization for the coupling of C(sp2)-C(sp2) via photocatalysis under mild and ideal air conditions without the presence of a strong base and metal. The mechanistic studies reveal that the generation of a benzene radical via the oxidative cleavage of aromatic hydrazines for the cross-coupling of C(sp2)-C(sp2) with the assistance of a photocatalyst is essential. The process exhibits excellent compatibility with functional groups and provides convenient access to various 3-arylquinoxalin-2(1H)-ones in good to excellent yields.
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Affiliation(s)
- Mei Wu
- Institute of Materia Medica, School of Pharmacy, Fujian Provincial Key Laboratory of Natural Medicine Pharmacology, Fujian Medical University Fuzhou 350122 China
| | - Nancheng Lian
- Department of Spinal Surgery, The First Affiliated Hospital of Fujian Medical University Fuzhou 350005 China
| | - Cuimin Wu
- Institute of Materia Medica, School of Pharmacy, Fujian Provincial Key Laboratory of Natural Medicine Pharmacology, Fujian Medical University Fuzhou 350122 China
| | - Xinyao Wu
- Institute of Materia Medica, School of Pharmacy, Fujian Provincial Key Laboratory of Natural Medicine Pharmacology, Fujian Medical University Fuzhou 350122 China
| | - Houzheng Chen
- Institute of Materia Medica, School of Pharmacy, Fujian Provincial Key Laboratory of Natural Medicine Pharmacology, Fujian Medical University Fuzhou 350122 China
| | - Chen Lin
- Institute of Materia Medica, School of Pharmacy, Fujian Provincial Key Laboratory of Natural Medicine Pharmacology, Fujian Medical University Fuzhou 350122 China
| | - Sunying Zhou
- Institute of Materia Medica, School of Pharmacy, Fujian Provincial Key Laboratory of Natural Medicine Pharmacology, Fujian Medical University Fuzhou 350122 China
| | - Fang Ke
- Institute of Materia Medica, School of Pharmacy, Fujian Provincial Key Laboratory of Natural Medicine Pharmacology, Fujian Medical University Fuzhou 350122 China
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5
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Bao Z, Huang M, Xu Y, Zhang X, Wu YD, Wang J. Selective Formal Carbene Insertion into Carbon-Boron Bonds of Diboronates by N-Trisylhydrazones. Angew Chem Int Ed Engl 2023; 62:e202216356. [PMID: 36576426 DOI: 10.1002/anie.202216356] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/22/2022] [Accepted: 12/28/2022] [Indexed: 12/29/2022]
Abstract
Bisborylalkanes play important roles in organic synthesis as versatile bifunctional reagents. The two boron moieties in these compounds can be selectively converted into other functional groups through cross-coupling, oxidation or radical reactions. Thus, the development of efficient methods for synthesizing bisborylalkanes is highly demanded. Herein we report a new strategy to access bisborylalkanes through the reaction of N-trisylhydrazones with diboronate, in which the bis(boryl) methane is transformed into 1,2-bis(boronates) via formal carbene insertion. Since the N-trisylhydrazones can be readily derived from the corresponding aldehydes, this strategy represents a practical synthesis of 1,2-diboronates with broad substrate scope. Mechanistic studies reveal an unusual neighboring group effect of 1,1-bis(boronates), which accounts for the observed regioselectivity when unsymmetric 1,1-diboronates are applied.
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Affiliation(s)
- Zhicheng Bao
- Beijing National Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing, 100871, China
| | - Meirong Huang
- Shenzhen Bay Laboratory, Shenzhen, 518132, P. R. China.,Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China
| | - Yan Xu
- Beijing National Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing, 100871, China
| | - Xinhao Zhang
- Shenzhen Bay Laboratory, Shenzhen, 518132, P. R. China.,Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China
| | - Yun-Dong Wu
- Shenzhen Bay Laboratory, Shenzhen, 518132, P. R. China.,Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing, 100871, China
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6
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Ito T, Harada S, Homma H, Okabe A, Nemoto T. Mechanistic Investigation on Dearomative Spirocyclization of Arenes with α-Diazoamide under Boron Catalysis. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Tsubasa Ito
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Shingo Harada
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Haruka Homma
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Ayaka Okabe
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Tetsuhiro Nemoto
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
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7
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Concise synthesis of moracin M using Appel mediated dehydration of a bioinspired endoperoxide. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Rao J, Ren X, Zhu X, Guo Z, Wang C, Zhou CY. Ruthenium-catalyzed reaction of diazoquinones with arylamines to synthesize diarylamines. Org Chem Front 2022. [DOI: 10.1039/d2qo01134d] [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 diarylamine scaffold is common in bioactive molecules. Herein, we report a Ru(ii)-catalyzed C–N cross-coupling reaction of diazoquinones with arylamines, which provides access to a range of functionalized diarylamines in 43–97% yields.
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Affiliation(s)
- Junxin Rao
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, People's Republic of China
| | - Xiaoyu Ren
- College of Materials Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Shanxi 030024, People's Republic of China
| | - Xin Zhu
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, People's Republic of China
| | - Zhen Guo
- College of Materials Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Shanxi 030024, People's Republic of China
| | - Chengming Wang
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, People's Republic of China
| | - Cong-Ying Zhou
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, People's Republic of China
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9
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Zhang F, Zhou L, Yang K, Song Q. Recent Progress on 1,2-Metallate Shift Reactions Based on Tetracoordinate Boron Intermediates. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202110017] [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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Rao J, Zhao J, Zhu X, Guo Z, Wang C, Zhou CY. Rhodium-catalyzed reaction of diazoquinones with allylboronates to synthesize allylphenols. Org Chem Front 2022. [DOI: 10.1039/d2qo00626j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rhodium-catalyzed reaction of diazoquinones and allylboronates was developed, which provides access to a range of substituted allylphenols under mild conditions.
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Affiliation(s)
- Junxin Rao
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, People's Republic of China
| | - Jianli Zhao
- College of Materials Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Shanxi 030024, People's Republic of China
| | - Xin Zhu
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, People's Republic of China
| | - Zhen Guo
- College of Materials Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Shanxi 030024, People's Republic of China
| | - Chengming Wang
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, People's Republic of China
| | - Cong-Ying Zhou
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, People's Republic of China
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11
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Zhang C, Sun Q, Rudolph M, Rominger F, Hashmi ASK. Gold-Catalyzed Regiodivergent Annulations of Diazo-Alkynes Controlled by Et 3N(HF) 3. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04724] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Cheng Zhang
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Qiaoying Sun
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Matthias Rudolph
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - A. Stephen K. Hashmi
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
- Chemistry Department, Faculty of Science, King Abdulaziz University (KAU), Jeddah 21589, Saudi Arabia
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12
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Tarigopula C, Manojveer S, Balamurugan R. Synthesis of Highly Substituted Biaryls by the Construction of a Benzene Ring via In Situ Formed Acetals. J Org Chem 2021; 86:11871-11883. [PMID: 34425048 DOI: 10.1021/acs.joc.1c01277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Herein, we present an interesting method for the construction of a benzene ring using propargylic alcohols and 1,3-dicarbonyls, which involves three new C-C bond formations via cascade alkylation, formylation, annulation, and aromatization to make substituted biaryls. This one-pot Brønsted acid-promoted protocol utilizes the unique reactivity of the acetal formed under the reaction conditions. Alkynyl methyl ketones could be employed instead of 1,3-dicarbonyls as they are converted to 1,3-dicarbonyls by hydration under the reaction conditions.
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13
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Bera S, Roy S, Pal SC, Anoop A, Samanta R. Iridium(III)-Catalyzed Intermolecular Mild N-Arylation of Aliphatic Amides Using Quinoid Carbene: A Migratory Insertion-Based Approach. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02653] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Satabdi Bera
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Saikat Roy
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Shyam Chand Pal
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Anakuthil Anoop
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Rajarshi Samanta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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14
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Synthesis of structurally diversified BINOLs and NOBINs via palladium-catalyzed C-H arylation with diazoquinones. Sci China Chem 2021. [DOI: 10.1007/s11426-021-1003-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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15
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Ren Q, Cao T, He C, Yang M, Liu H, Wang L. Highly Atroposelective Rhodium(II)-Catalyzed N–H Bond Insertion: Access to Axially Chiral N-Arylindolocarbazoles. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01232] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Qiao Ren
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science &Peking Union Medical College, Beijing 100193, People’s Republic of China
- College of Pharmaceutical Science, Southwest University, Chongqing 400715, People’s Republic of China
| | - Tingting Cao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science &Peking Union Medical College, Beijing 100193, People’s Republic of China
| | - Chunnian He
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science &Peking Union Medical College, Beijing 100193, People’s Republic of China
| | - Meihua Yang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science &Peking Union Medical College, Beijing 100193, People’s Republic of China
| | - Haitao Liu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science &Peking Union Medical College, Beijing 100193, People’s Republic of China
| | - Lei Wang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science &Peking Union Medical College, Beijing 100193, People’s Republic of China
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16
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Masagalli JN, BasavanaGowda MK, Chae HS, Choi WJ. Synthesis of Moracin C and Its Derivatives with a 2-arylbenzofuran Motif and Evaluation of Their PCSK9 Inhibitory Effects in HepG2 Cells. Molecules 2021; 26:1327. [PMID: 33801308 PMCID: PMC7958322 DOI: 10.3390/molecules26051327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/17/2021] [Accepted: 02/25/2021] [Indexed: 11/16/2022] Open
Abstract
Proprotein convertase subtilisin/kexin type 9 (PCSK9) is a key factor in several cardiovascular diseases, as it is responsible for the elevation of circulating low-density lipoprotein cholesterol (LDL-C) levels in blood plasma by direct interaction with the LDL receptor. The development of orally available drugs to inhibit this PCSK9-LDLR interaction is a highly desirable objective. Here, we report the synthesis of naturally occurring moracin compounds and their derivatives with a 2-arylbenzofuran motif to inhibit PCSK9 expression. In addition, we discuss a short approach involving the three-step synthesis of moracin C and a divergent method to obtain various analogs from one starting material. Among the tested derivatives, compound 7 (97.1%) was identified as a more potent inhibitor of PCSK9 expression in HepG2 cells than berberine (60.9%). These results provide a better understanding of the structure-activity relationships of moracin derivatives for the inhibition of PCSK9 expression in human hepatocytes.
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Affiliation(s)
| | | | | | - Won Jun Choi
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University, Seoul 04620, Korea; (J.N.M.); (M.K.B.); (H.-S.C.)
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17
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Bahukhandi SB, Jana S, Koenigs RM. Brønsted acid‐catalyzed Reactions of Unprotected
N
‐heterocycles with Aryl/Aryl Diazoalkanes. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202000709] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Sripati Jana
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 D-52074 Aachen Germany
| | - Rene M. Koenigs
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 D-52074 Aachen Germany
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18
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Chen P, Nan J, Hu Y, Kang Y, Wang B, Ma Y, Szostak M. Metal-free tandem carbene N-H insertions and C-C bond cleavages. Chem Sci 2020; 12:803-811. [PMID: 34163814 PMCID: PMC8178978 DOI: 10.1039/d0sc05763k] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 11/09/2020] [Indexed: 01/16/2023] Open
Abstract
A metal-free C-H [5 + 1] annulation reaction of 2-arylanilines with diazo compounds has been achieved, giving rise to two types of prevalent phenanthridines via highly selective C-C cleavage. Compared to the simple N-H insertion manipulation of diazo, this method elegantly accomplishes a tandem N-H insertion/SEAr/C-C cleavage/aromatization reaction, and the synthetic utility of this new transformation is exemplified by the succinct syntheses of trisphaeridine and bicolorine alkaloids.
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Affiliation(s)
- Pu Chen
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology Xi'an 710021 China
| | - Jiang Nan
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology Xi'an 710021 China
| | - Yan Hu
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology Xi'an 710021 China
| | - Yifan Kang
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology Xi'an 710021 China
| | - Bo Wang
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology Xi'an 710021 China
| | - Yangmin Ma
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology Xi'an 710021 China
| | - Michal Szostak
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology Xi'an 710021 China
- Department of Chemistry, Rutgers University 73 Warren Street Newark New Jersey 07102 USA
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He M, Chen Y, Luo Y, Li J, Lai R, Yang Z, Wang Y, Wu Y. Transition-metal-free [3+3] annulation reaction of sulfoxonium ylides with cyclopropenones for the synthesis of 2-pyrones. GREEN SYNTHESIS AND CATALYSIS 2020. [DOI: 10.1016/j.gresc.2020.10.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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