1
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Naghim A, Rodriguez J, Chuzel O, Chouraqui G, Bonne D. Enantioselective Synthesis of Heteroatom-Linked Non-Biaryl Atropisomers. Angew Chem Int Ed Engl 2024; 63:e202407767. [PMID: 38748462 DOI: 10.1002/anie.202407767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Indexed: 06/16/2024]
Abstract
Atropisomers hold significant fascination, not only for their prevalence in natural compounds but also for their biological importance and wide-ranging applications as chiral materials, ligands, and organocatalysts. While biaryl and heterobiaryl atropisomers are commonly studied, the enantioselective synthesis of less abundant heteroatom-linked non-biaryl atropisomers presents a formidable challenge in modern organic synthesis. Unlike classical atropisomers, these molecules allow rotation around two bonds, resulting in low barriers to enantiomerization through concerted bond rotations. In recent years the discovery of new configurationally stable rare non-biaryl scaffolds such as aryl amines, aryl ethers and aryl sulfones as well as innovative methodologies to control their configuration have been disclosed in the literature and constitute the topic of this minireview.
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Affiliation(s)
- Abdelati Naghim
- Aix Marseille Université, CNRS, Centrale Méditerranée, iSm2, 13397, Marseille, France
| | - Jean Rodriguez
- Aix Marseille Université, CNRS, Centrale Méditerranée, iSm2, 13397, Marseille, France
| | - Olivier Chuzel
- Aix Marseille Université, CNRS, Centrale Méditerranée, iSm2, 13397, Marseille, France
| | - Gaëlle Chouraqui
- Aix Marseille Université, CNRS, Centrale Méditerranée, iSm2, 13397, Marseille, France
| | - Damien Bonne
- Aix Marseille Université, CNRS, Centrale Méditerranée, iSm2, 13397, Marseille, France
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2
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Liu J, Wei X, Wang Y, Qu J, Wang B. Asymmetric synthesis of atropisomeric arylpyrazoles via direct arylation of 5-aminopyrazoles with naphthoquinones. Org Biomol Chem 2024; 22:4254-4263. [PMID: 38738921 DOI: 10.1039/d4ob00514g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
Construction of axially chiral arylpyrazoles represents an attractive challenge due to the relatively low rotational barrier of biaryl structures containing five-membered heterocycles. This work describes the catalytic asymmetric construction of axially chiral arylpyrazoles using 5-aminopyrazoles and naphthoquinone derivatives. The chiral axis could be formed through a central-to-axial chirality relay step of the chiral phosphoric acid-catalyzed arylation reaction, which features excellent yields and enantioselectivities with a broad substrate scope under mild reaction conditions.
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Affiliation(s)
- Jiamin Liu
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Xingfu Wei
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Yue Wang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Baomin Wang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
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3
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Gaucherand A, Yen-Pon E, García-López D, Naubron JV, Chentouf S, Giorgi M, Humbel S, Jean M, Rodriguez J, Bonne D. Padlocking dihydrofurannulation for the control of small degree of helicity built on a fused-tetracyclic core. Chem Sci 2024; 15:7300-7307. [PMID: 38756805 PMCID: PMC11095505 DOI: 10.1039/d4sc00745j] [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: 01/31/2024] [Accepted: 03/15/2024] [Indexed: 05/18/2024] Open
Abstract
Enantioselective construction of small molecules displaying a configurationally stable helical shape built on a fused-tetracyclic core is a daunting synthetic challenge even more pronounced when five-membered rings are incorporated in the structure. The resulting higher configurational lability strongly hampers their access, and therefore the development of new efficient methodologies is timely and highly desirable. In this context, we describe a padlocking approach via the enantioselective organocatalytic domino furannulation of appropriately designed achiral fused-tricyclic precursors resulting in the synthesis of configurationally locked helically chiral tetracyclic scaffolds featuring one or two five-membered rings with the simultaneous control of central and helical chiralities.
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Affiliation(s)
- Arthur Gaucherand
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Expédite Yen-Pon
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Diego García-López
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Jean-Valère Naubron
- Aix Marseille Université, CNRS, Centrale Marseille, FSCM, Spectropole Marseille France
| | - Sara Chentouf
- Aix Marseille Université, CNRS, Centrale Marseille, FSCM, Spectropole Marseille France
| | - Michel Giorgi
- Aix Marseille Université, CNRS, Centrale Marseille, FSCM, Spectropole Marseille France
| | - Stéphane Humbel
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Marion Jean
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Jean Rodriguez
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Damien Bonne
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2 Marseille France
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Hatakenaka R, Nishikawa N, Mikata Y, Aoyama H, Yamashita K, Shiota Y, Yoshizawa K, Kawasaki Y, Tomooka K, Kamijo S, Tani F, Murafuji T. Efficient Synthesis and Structural Analysis of Chiral 4,4'-Biazulene. Chemistry 2024; 30:e202400098. [PMID: 38376431 DOI: 10.1002/chem.202400098] [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: 01/09/2024] [Revised: 02/20/2024] [Accepted: 02/20/2024] [Indexed: 02/21/2024]
Abstract
4,4'-Biazulene is a potentially attractive key component of an axially chiral biaryl compound, however, its structure and properties have not been clarified owing to the lack of its efficient synthesis. We report a breakthrough in the reliable synthesis of 4,4'-biazulene, which is achieved by the access to azulen-4-ylboronic acid pinacol ester and 4-iodoazulene as novel key synthetic intermediates for the Suzuki-Miyaura cross-coupling reaction. The X-ray crystallographic analysis of 4,4'-biazulene confirmed its axial chirality. The enantiomers of 4,4'-biazulene were successfully resolved by HPLC on the chiral stationary phase column. The kinetic experiments and DFT calculations indicate that the racemization energy barrier of 4,4'-biazulene is comparable to that of 1,1'-binaphthyl.
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Affiliation(s)
- Ryoji Hatakenaka
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8512, Japan
| | - Nanami Nishikawa
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8512, Japan
| | - Yuji Mikata
- Laboratory for Molecular & Functional Design, Department of Engineering, Nara Women's University, Nara, 630-8506, Japan
| | - Hiroki Aoyama
- Graduate School of Science, Kyushu University, Fukuoka, 819-0395, Japan
| | - Kohsuke Yamashita
- Graduate School of Engineering, Kyushu University, Fukuoka, 819-0395, Japan
| | - Yoshihito Shiota
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Yuuya Kawasaki
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan
| | - Katsuhiko Tomooka
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan
| | - Shin Kamijo
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8512, Japan
| | - Fumito Tani
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Toshihiro Murafuji
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8512, Japan
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5
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Zhang J, Wang K, Zhu C. Deracemization of Atropisomeric Biaryls Enabled by Copper Catalysis. JACS AU 2024; 4:502-511. [PMID: 38425940 PMCID: PMC10900502 DOI: 10.1021/jacsau.3c00623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/03/2024] [Accepted: 01/03/2024] [Indexed: 03/02/2024]
Abstract
Atropisomeric biaryls have found crucial applications in versatile chiral catalysts as well as in ligands for transition metals. Herein, we have developed an efficient crystallization-induced deracemization (CID) method to access chiral biaryls from their racemates with a chiral ammonium salt under copper catalysis including BINOL, NOBIN, and BINAM derivatives. After being significantly accelerated by its bidentate diamine ligand, the copper catalyst exhibits high efficiency and selectivity in racemizing biaryl skeletons, and the cocrystal complex would be enantioselectively formed together with chiral ammonium salt, which on acid-quenching would directly deliver chiral biaryl without further chromatographic purification. This CID process is easily scalable, and the chiral ammonium salt was nicely recoverable. Ligand effect studies showed that bulky alkyl substitution was an indispensable element to ensure efficient racemization, which probably proceeds via a radical-cation intermediate and further allows axial rotation by forming a delocalized radical.
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Affiliation(s)
| | | | - Can Zhu
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
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6
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Pan ML, Hsu CH, Lin YD, Chen WS, Chen BH, Lu CH, Yang SD, Cheng MJ, Chou PT, Wu YT. A New Series of Sandwich-Type 5,5'-Biterphenylenes: Synthetic Challenge, Structural Uniqueness and Photodynamics. Chemistry 2024; 30:e202303523. [PMID: 37997021 DOI: 10.1002/chem.202303523] [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: 10/25/2023] [Revised: 11/21/2023] [Accepted: 11/23/2023] [Indexed: 11/25/2023]
Abstract
A new series of biaryls, bi-linear-terphenylenes (BLTPs), were prepared using the tert-butyllithium-mediated cyclization as the key synthetic step. The three-dimensional structures of the studied compounds were verified using X-ray crystallography and DFT calculations. Tetraaryl(ethynyl)-substituted BLTPs are highly crowded molecules, and the internal rotation around the central C-C bond is restricted due to a high barrier (>50 kcal/mol). These structures contain several aryl/terphenylenyl/aryl sandwiches, where the through-space π-π (TSPP) interactions are strongly reflected in the shielding of 1 H NMR chemical shifts, reduction of oxidation potentials, increasing aromaticity of the central six-membered ring and decreasing antiaromaticity of the four-membered rings in a terphenylenyl moiety based on NICS(0) and iso-chemical shielding surfaces. Despite the restricted C-C bond associated intramolecular TSPP interactions for BLTPs in the ground state, to our surprise, the electronic coupling between two linear terphenylenes (LTPs) in BLTPs in the excited state is weak, so that the excited-state behavior is dominated by the corresponding monomeric LTPs. In other words, all BLTPs undergo ultrafast relaxation dynamics via strong exciton-vibration coupling, acting as a blue-light absorber with essentially no emission.
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Affiliation(s)
- Ming-Lun Pan
- Department of Chemistry, National Cheng Kung University, 70101, Tainan, Taiwan
| | - Chao-Hsien Hsu
- Department of Chemistry, National Taiwan University, 10617, Taipei, Taiwan
| | - Yan-Ding Lin
- Department of Chemistry, National Taiwan University, 10617, Taipei, Taiwan
| | - Wei-Sen Chen
- Department of Chemistry, National Cheng Kung University, 70101, Tainan, Taiwan
| | - Bo-Han Chen
- Institute of Photonics Technologies, National Tsing Hua University, 30013, Hsinchu, Taiwan
| | - Chih-Hsuan Lu
- Institute of Photonics Technologies, National Tsing Hua University, 30013, Hsinchu, Taiwan
| | - Shang-Da Yang
- Institute of Photonics Technologies, National Tsing Hua University, 30013, Hsinchu, Taiwan
| | - Mu-Jeng Cheng
- Department of Chemistry, National Cheng Kung University, 70101, Tainan, Taiwan
| | - Pi-Tai Chou
- Department of Chemistry, National Taiwan University, 10617, Taipei, Taiwan
| | - Yao-Ting Wu
- Department of Chemistry, National Cheng Kung University, 70101, Tainan, Taiwan
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Baucom JC, Agyemang NB, Trelles T, Gallicchio E, Murelli RP. Studies on the Configurational Stability of Tropolone-Ketone-, Ester-, and Aldehyde-Based Chiral Axes. J Org Chem 2024; 89:541-552. [PMID: 38133833 DOI: 10.1021/acs.joc.3c02286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Recent studies have revealed that tropolone-amide aryl C-C(O) rotational barriers are dramatically higher than those of analogous benzamide-based systems, and as a result, they have an increased likelihood of displaying high configurational stability. Studies on other tropolone-based chiral axes are important to assess the generality of this phenomenon. Herein, we describe a series of studies on the rotational barriers of tropolone-ketone, tropolone-ester, and tropolone-aldehyde chiral axes. These studies are complemented with computational modeling of the dynamics of these and analogous benzenoid variants to illuminate the impact that tropolone may have on aryl-C(O) configurational stability.
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Affiliation(s)
- John-Charles Baucom
- Department of Chemistry and Biochemistry, Brooklyn College, The City University of New York, Brooklyn, New York 11210, United States
- PhD Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
| | - Nana B Agyemang
- Department of Chemistry and Biochemistry, Brooklyn College, The City University of New York, Brooklyn, New York 11210, United States
- PhD Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
| | - Theresa Trelles
- Department of Chemistry and Biochemistry, Brooklyn College, The City University of New York, Brooklyn, New York 11210, United States
| | - Emilio Gallicchio
- Department of Chemistry and Biochemistry, Brooklyn College, The City University of New York, Brooklyn, New York 11210, United States
- PhD Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
- PhD Program in Biochemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
| | - Ryan P Murelli
- Department of Chemistry and Biochemistry, Brooklyn College, The City University of New York, Brooklyn, New York 11210, United States
- PhD Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
- PhD Program in Biochemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
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8
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Dong H, Wang C. Cobalt-Catalyzed Asymmetric Reductive Alkenylation and Arylation of Heterobiaryl Tosylates: Kinetic Resolution or Dynamic Kinetic Resolution? J Am Chem Soc 2023. [PMID: 38018138 DOI: 10.1021/jacs.3c08769] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
Herein, we report a cobalt-catalyzed atroposelective reductive cross-coupling of racemic heterobiaryl tosylates with a C(sp2)-X type electrophile. Both aryl and alkenyl halides are competent precursors for this reaction, providing a variety of heterobiaryls as the products in a highly enantioselective manner with high functionality tolerance. The related asymmetric arylation and alkenylation are discovered to proceed with divergent mechanisms. The reaction pathway changes from kinetic resolution (KR) when alkenyl bromides and aryl iodides bearing strong electron-withdrawing substitution on the para-position are employed as the starting materials to an enantioconvergent transformation via dynamic KR of configurationally labile cobaltacycles when relatively electron-rich aryl iodides are used. The change of the reaction mechanisms turns out to arise from the relative rates of two competing elementary steps, which are the epimerization of the cyclic Co(I) intermediates and their trapping by the coupling electrophiles of the C(sp2)-type via oxidative addition.
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Affiliation(s)
- Haiyan Dong
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Chuan Wang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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9
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Xiong M, Chen F, Shu Y, Wu X, Tang J, Yang F, Xing D. Iridium(I)-Catalyzed Atroposelective Alkenylation of Heterobiaryls with Terminal Alkynes. Org Lett 2023; 25:5703-5708. [PMID: 37523590 DOI: 10.1021/acs.orglett.3c01453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
Herein we report an iridium(I)-catalyzed atroposelective alkenylation of isoquinoline-derived heterobiaryls with terminal alkynes. In the presence of a cationic iridium(I) catalyst with (R)-SEGPHOS as the chiral ligand, this atom-economical alkenylation protocol allows the rapid construction of a series of axially chiral alkenylated heterobiaryls in moderate to good yields with good to high enantioselectivities.
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Affiliation(s)
- Maoqian Xiong
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Feifei Chen
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Yuhang Shu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Xiang Wu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Jie Tang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Fan Yang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Dong Xing
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
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10
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Hou L, Zhang S, Ma J, Wang H, Jin T, Terada M, Bao M. Organocatalytic Atroposelective Construction of Axially Chiral Compounds Containing Benzimidazole and Quinoline Rings. Org Lett 2023. [PMID: 37470416 DOI: 10.1021/acs.orglett.3c01905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
An organocatalytic atroposelective strategy for the construction of axially chiral compounds containing benzimidazole and quinoline rings is described. The enantioselective heteroannulation reaction of 2-alkynylbenzimidazoles with ortho-aminophenylketones proceeded smoothly in the presence of chiral phosphoric acid to provide axially chiral heterobiaryls with good yields and enantioselectivities. This is the first example of the combination of benzimidazole and quinoline rings at the 2- and 3-positions, respectively, into axially chiral heterobiaryls by this new strategy.
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Affiliation(s)
- Linan Hou
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Sheng Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Ji Ma
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Haiyu Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Tienan Jin
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Masahiro Terada
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Ming Bao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
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Jin J, Mou C, Zou J, Xie X, Wang C, Shen T, Deng Y, Li B, Jin Z, Li X, Chi YR. Development of axially chiral urazole scaffolds for antiplant virus applications against potato virus Y. PEST MANAGEMENT SCIENCE 2023; 79:2527-2538. [PMID: 36864730 DOI: 10.1002/ps.7428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/16/2023] [Accepted: 03/02/2023] [Indexed: 06/02/2023]
Abstract
BACKGROUND Potato virus Y (PVY) was first discovered by Smith in 1931 and is currently ranked as the fifth most significant plant virus. It can cause severe damage to plants from the family Solanaceae, which results in billions of dollars of economic loss worldwide every year. To discover new antiviral drugs, a class of multifunctional urazole derivatives bearing a stereogenic CN axis were synthesized with excellent optical purities for antiviral evaluations against PVY. RESULTS The absolute configurations of the axially chiral compounds exhibited obvious distinctions in antiviral bioactivities, with several of these enantio-enriched axially chiral molecules showing excellent anti-PVY activities. In particular, compound (R)-9f exhibited remarkable curative activities against PVY with a 50% maximal effective concentration (EC50 ) of 224.9 μg mL-1 , which was better than that of ningnanmycin (NNM), which had an EC50 of 234.0 μg mL-1 . And the EC50 value of the protective activities of compound (R)-9f was 462.2 μg mL-1 , which was comparable to that of NNM (442.0 μg mL-1 ). The mechanisms of two enantiomer of the axially chiral compounds 9f were studied by both molecule docking and defensive enzyme activity tests. CONCLUSION Mechanistic studies demonstrated that the axially chiral configurations of the compounds played significant roles in the molecule PVY-CP (PVY Coat Protein) interactions and could enhance the activities of the defense enzymes. The (S)-9f showed only one carbon-hydrogen bond and one π-cation interaction between the chiral molecule and the PVY-CP amino acid sites. In contrast, the (R)-enantiomer of 9f exhibited three hydrogen bonding interactions between the carbonyl groups and the PVY-CP active sites of ARG157 and GLN158. The current study provides significant information on the roles that axial chiralities play in plant protection against viruses, which will facilitate the development of novel green pesticides bearing axial chiralities with excellent optical purities. © 2023 Society of Chemical Industry.
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Grants
- Frontiers Science Center for Asymmetric Synthesis and Medicinal Molecules, Department of Education, Guizhou Province [Qianjiaohe KY number (2020)004]
- The 10 Talent Plan (Shicengci) of Guizhou Province ([2016]5649)
- Ministry of Education, Singapore, under its MOE AcRF Tier 1 Award (RG7/20, RG5/19), MOE AcRF Tier 2 (MOE2019-T2-2-117), and MOE AcRF Tier 3 Award (MOE2018-T3-1-003)
- National Natural Science Foundation of China (32172459, 21961006, 22071036)
- Program of Introducing Talents of Discipline to Universities of China (111 Program, D20023) at Guizhou University
- Science and Technology Department of Guizhou Province ([2018]2802, [2019]1020, Qiankehejichu-ZK[2021]Key033)
- Singapore National Research Foundation under its NRF Investigatorship (NRF-NRFI2016-06) and Competitive Research Program (NRF-CRP22-2019-0002)
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Affiliation(s)
- Jiamiao Jin
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Chengli Mou
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Juan Zou
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Xin Xie
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang, China
| | - Chen Wang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Tingwei Shen
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Youlin Deng
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Benpeng Li
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Zhichao Jin
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Xiangyang Li
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Yonggui Robin Chi
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
- School of Chemistry, Chemical Engineering, and Biotechnology, Nanyang Technological University, Singapore, Singapore
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12
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de Ceuninck van Capelle LA, Wales SM, Macdonald JM, Kruger M, Richardson C, Gardiner MG, Hyland CJT. Synthesis and Atropisomeric Properties of Benzoazepine-Fused Isoindoles. J Org Chem 2023. [PMID: 37326851 DOI: 10.1021/acs.joc.3c00607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Atropisomeric, bench-stable benzoazepine-fused isoindoles were synthesized via oxidation from isoindoline precursors. Using the isoindoles 5d-f as models, the stereochemistry and conformational folding of the systems were examined. Chiral UHPLC was used to analyze the rate of racemization and calculate the Gibbs free energy of enantiomerization (ΔG‡Enant). X-ray crystallography, 1H NMR spectroscopy, and DFT calculations were used to elucidate the three axes of chirality and clarify the structural factors contributing to ΔG‡Enant. Tandem rotation around the axes of chirality precludes the formation of diastereomers, with rotational restriction of the Caryl-Nsulfonamide bond determined as the moderator of atropisomeric stability in the system, affected primarily by steric hindrance as well as by π-stacking interactions facilitated by the folded conformation of the sulfonamide over the isoindole moiety.
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Affiliation(s)
- Lillian A de Ceuninck van Capelle
- Molecular Horizons Research Institute, School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Steven M Wales
- Molecular Horizons Research Institute, School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - James M Macdonald
- CSIRO Manufacturing, Biomedical Manufacturing Program, Bag 10, Clayton South, Melbourne, Victoria 3168, Australia
| | - Megan Kruger
- CSIRO Manufacturing, Materials Characterisation and Modelling Program, Bag 10, Clayton South, Melbourne, Victoria 3168, Australia
| | - Christopher Richardson
- Molecular Horizons Research Institute, School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Michael G Gardiner
- School of Physical Sciences-Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia
- Research School of Chemistry, Australian National University, Acton, Canberra, Australian Capital Territory 2601, Australia
| | - Christopher J T Hyland
- Molecular Horizons Research Institute, School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia
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13
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Song J, Kim A, Hong I, Kim S, Byun WS, Lee HS, Kim HS, Lee SK, Kwon Y. Synthesis and biological evaluation of atropisomeric tetrahydroisoquinolines overcoming docetaxel resistance in triple-negative human breast cancer cells. Bioorg Chem 2023; 137:106573. [PMID: 37229969 DOI: 10.1016/j.bioorg.2023.106573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/11/2023] [Accepted: 04/24/2023] [Indexed: 05/27/2023]
Abstract
Herein, atropisomeric 8-aryltetrahydroisoquinolines have been synthesized and biologically evaluated. Based on our structure-activity relationship study, a highly bioactive racemic compound has been produced, and it exhibited high antiproliferative activities against various cancer cell lines, including docetaxel-resistant breast cancer cell lines. Each enantiomer can be synthesized in an enantioselective manner by employing the chiral phosphoric acid-catalyzed atroposelective Pictet-Spengler cyclization. An axially (R)-configured enantiomer showed a higher biological activity compared with the axially (S)-configured enantiomer. Further biological studies suggested that the (R)-enantiomer overcomes docetaxel resistance via the downregulation of signal transducer and activator of transcription 3 activation and consequently induces cellular apoptosis in docetaxel-resistant triple-negative breast cancer cell lines.
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Affiliation(s)
- Jayoung Song
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea.
| | - Ahreum Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Intaek Hong
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Sangji Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Woong Sub Byun
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyun Soo Lee
- Department of Chemistry, Sogang University, Seoul 04107, Republic of Korea
| | - Hyung Sik Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea.
| | - Yongseok Kwon
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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14
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Williams DE, Cassel J, Zhu JL, Yang JX, de Voogd NJ, Matainaho T, Salvino JM, Wang YA, Montaner LJ, Tietjen I, Andersen RJ. Thorectidiol A Isolated from the Marine Sponge Dactylospongia elegans Disrupts Interactions of the SARS-CoV-2 Spike Receptor Binding Domain with the Host ACE2 Receptor. JOURNAL OF NATURAL PRODUCTS 2023; 86:582-588. [PMID: 36657039 PMCID: PMC9885524 DOI: 10.1021/acs.jnatprod.2c01030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Indexed: 06/15/2023]
Abstract
Thorectidiols isolated from the marine sponge Dactylospongia elegans (family Thorectidae, order Dictyoceratida) collected in Papua New Guinea are a family of symmetrical and unsymmetrical dimeric biphenyl meroterpenoid stereoisomers presumed to be products of oxidative phenol coupling of a co-occurring racemic monomer, thorectidol (3). One member of the family, thorectidiol A (1), has been isolated in its natural form, and its structure has been elucidated by analysis of NMR, MS, and ECD data. Acetylation of the sponge extract facilitated isolation of additional thorectidiol diacetate stereoisomers and the isolation of the racemic monomer thorectidol acetate (6). Racemic thorectidiol A (1) showed selective inhibition of the SARS-CoV-2 spike receptor binding domain (RBD) interaction with the host ACE2 receptor with an IC50 = 1.0 ± 0.7 μM.
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Affiliation(s)
- David E Williams
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, B.C. Canada, V6T 1Z1
- Department of Earth, Ocean & Atmospheric Sciences, University of British Columbia, 2207 Main Mall, Vancouver, B.C. Canada, V6T 1Z4
| | - Joel Cassel
- The Wistar Institute, Philadelphia, Pennsylvania 19104, United States
| | - Jin-Lin Zhu
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, B.C. Canada, V6T 1Z1
| | - Jian-Xiong Yang
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, B.C. Canada, V6T 1Z1
| | - Nicole J de Voogd
- Naturalis Biodiversity Center, P.O. Box 9517, 2300 RA Leiden, The Netherlands
| | - Teatulohi Matainaho
- University of Papua New Guinea, University National Capital District, 134, Papua New Guinea
| | - Joseph M Salvino
- The Wistar Institute, Philadelphia, Pennsylvania 19104, United States
| | - Yan Alexander Wang
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, B.C. Canada, V6T 1Z1
| | - Luis J Montaner
- The Wistar Institute, Philadelphia, Pennsylvania 19104, United States
| | - Ian Tietjen
- The Wistar Institute, Philadelphia, Pennsylvania 19104, United States
| | - Raymond J Andersen
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, B.C. Canada, V6T 1Z1
- Department of Earth, Ocean & Atmospheric Sciences, University of British Columbia, 2207 Main Mall, Vancouver, B.C. Canada, V6T 1Z4
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15
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Thönnißen V, Atodiresei IL, Patureau FW. Atroposelective Nenitzescu Indole Synthesis. Chemistry 2023; 29:e202300279. [PMID: 36725685 DOI: 10.1002/chem.202300279] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 01/31/2023] [Accepted: 02/01/2023] [Indexed: 02/03/2023]
Abstract
In the past decade, compounds bearing a stereogenic C-N axis have gained significant attention in fields ranging from ligand to drug design. Yet, the atroposelective synthesis of these molecules remains a considerable challenge. In contrast to recent methods using more advanced chiral catalysts, a very simply accessed Jacobsen-type chromium(III)-salen complex was used here as a chiral enantiopure Lewis acid catalyst for a highly atroposelective Nenitzescu indole synthesis. Mild reaction conditions afforded various 5-hydroxybenzo[g]indoles in up to 97 % yield. Moreover, through a simple work-up, very high enantiomeric excesses of up to 99 % could be obtained.
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Affiliation(s)
- Vinzenz Thönnißen
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Iuliana L Atodiresei
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Frederic W Patureau
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
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16
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Yan Y, Li M, Shi Q, Huang M, Li W, Cao L, Zhang X. Atropoenantioselective Arylation of 5‐Amino‐Isothiazoles with Methyl
p
‐Quinone Carboxylate. ASIAN J ORG CHEM 2023. [DOI: 10.1002/ajoc.202200578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Yingkun Yan
- Department of Chemistry Xihua University Chengdu 610039 P. R. China
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Min Li
- Department of Chemistry Xihua University Chengdu 610039 P. R. China
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Quan Shi
- Department of Chemistry Xihua University Chengdu 610039 P. R. China
| | - Min Huang
- Department of Chemistry Xihua University Chengdu 610039 P. R. China
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Wenzhe Li
- Department of Chemistry Xihua University Chengdu 610039 P. R. China
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Lianyi Cao
- Department of Chemistry Xihua University Chengdu 610039 P. R. China
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Xiaomei Zhang
- Department of Chemistry Xihua University Chengdu 610039 P. R. China
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 P. R. China
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17
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Křoustková J, Ritomská A, Al Mamun A, Hulcová D, Opletal L, Kuneš J, Cahlíková L, Bucar F. Structural analysis of unusual alkaloids isolated from Narcissus pseudonarcissus cv. Carlton. PHYTOCHEMISTRY 2022; 204:113439. [PMID: 36152726 DOI: 10.1016/j.phytochem.2022.113439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 06/16/2023]
Abstract
Narciindole A, the first representative of Amaryllidaceae alkaloids with an indol-3-ylmethanone framework, was isolated from bulbs of Narcissus pseudonarcissus (L.) cv. Carlton, together with carltonine D and carltonine E, which share the same unusual structural motif as dimeric carltonine C (reported in 2020), exhibiting atropisomerism. Unambiguous structure elucidations have been achieved by NMR spectroscopy, HRMS, and comparison with literature data of related alkaloids. Furthermore, the chirality of known alkaloids with a galanthindole biaryl core was revised using optical rotation. Last, but not least, a biosynthetic pathway for dimeric carltonine-type alkaloids was proposed. Unfortunately, in terms of biological activity, the isolated alkaloids showed only moderate inhibition of human acetylcholinesterase and/or butyrylcholinesterase.
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Affiliation(s)
- Jana Křoustková
- ADINACO Research Group, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05, Hradec Kralove, Czech Republic; Institute of Pharmaceutical Sciences, University of Graz, Beethovenstraße 8, 8010, Graz, Austria.
| | - Aneta Ritomská
- ADINACO Research Group, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05, Hradec Kralove, Czech Republic
| | - Abdullah Al Mamun
- ADINACO Research Group, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05, Hradec Kralove, Czech Republic
| | - Daniela Hulcová
- ADINACO Research Group, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05, Hradec Kralove, Czech Republic
| | - Lubomír Opletal
- ADINACO Research Group, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05, Hradec Kralove, Czech Republic
| | - Jiří Kuneš
- Department of Bioorganic and Organic Chemistry, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05, Hradec Kralove, Czech Republic
| | - Lucie Cahlíková
- ADINACO Research Group, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05, Hradec Kralove, Czech Republic
| | - Franz Bucar
- Institute of Pharmaceutical Sciences, University of Graz, Beethovenstraße 8, 8010, Graz, Austria
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18
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Atropoenantioselective synthesis of heterobiaryl N-oxides via dynamic kinetic resolution. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1402-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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19
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Baker KM, Agostino CJ, Orloff EA, Battistoni LD, Hughes RR, McHugh EM, Shaw MP, Nafie J, Mulcahy SP. Design, Synthesis, and Physicochemical Studies of Configurationally Stable β-Carboline Atropisomers. J Org Chem 2022; 87:14068-14077. [PMID: 36174244 DOI: 10.1021/acs.joc.2c01675] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Axially chiral atropisomers have energetic barriers to rotation, ΔGrot, that prevent racemization of the respective enantiomers. We used computational modeling to develop a suite of 10 bio-inspired 1-aryl-β-carbolines with varying ΔGrot, from which a strong structure-activity relationship was observed for 2-substituted-1-naphthyl substituents. We then synthesized two of these atropisomers, 1d and 1f, by a four-step racemic synthesis and resolved the enantiomers via chiral chromatography. Racemization studies revealed experimental ΔGrot values of 39.5 and 33.0 kcal/mol for 1d and 1f, respectively, which were consistent with our computational results. These atropisomers exhibited long half-lives, which allowed for their physicochemical characterization and stereochemical assignment via UV-vis spectroscopy, fluorescence spectroscopy, electronic circular dichroism, and vibrational circular dichroism.
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Affiliation(s)
- Kristen M Baker
- Providence College, 1 Cunningham Square, Providence, Rhode Island02918, United States
| | - Colby J Agostino
- Providence College, 1 Cunningham Square, Providence, Rhode Island02918, United States
| | - Emily A Orloff
- Providence College, 1 Cunningham Square, Providence, Rhode Island02918, United States
| | - Lorenzo D Battistoni
- Providence College, 1 Cunningham Square, Providence, Rhode Island02918, United States
| | - Riley R Hughes
- Providence College, 1 Cunningham Square, Providence, Rhode Island02918, United States
| | - Erin M McHugh
- Providence College, 1 Cunningham Square, Providence, Rhode Island02918, United States
| | - Michael P Shaw
- Providence College, 1 Cunningham Square, Providence, Rhode Island02918, United States
| | - Jordan Nafie
- BioTools, Inc., 17546 Bee Line Highway, Jupiter, Florida33478, United States
| | - Seann P Mulcahy
- Providence College, 1 Cunningham Square, Providence, Rhode Island02918, United States
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20
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Xu J, Grosslight S, Mack KA, Nguyen SC, Clagg K, Lim NK, Timmerman JC, Shen J, White NA, Sirois LE, Han C, Zhang H, Sigman MS, Gosselin F. Atroposelective Negishi Coupling Optimization Guided by Multivariate Linear Regression Analysis: Asymmetric Synthesis of KRAS G12C Covalent Inhibitor GDC-6036. J Am Chem Soc 2022; 144:20955-20963. [DOI: 10.1021/jacs.2c09917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jie Xu
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Samantha Grosslight
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Kyle A. Mack
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Sierra C. Nguyen
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Kyle Clagg
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Ngiap-Kie Lim
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jacob C. Timmerman
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jeff Shen
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Nicholas A. White
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Lauren E. Sirois
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Chong Han
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Haiming Zhang
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Matthew S. Sigman
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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21
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Lanman BA, Parsons AT, Zech SG. Addressing Atropisomerism in the Development of Sotorasib, a Covalent Inhibitor of KRAS G12C: Structural, Analytical, and Synthetic Considerations. Acc Chem Res 2022; 55:2892-2903. [PMID: 36178208 PMCID: PMC9583618 DOI: 10.1021/acs.accounts.2c00479] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Nearly a century after its first description, configurationally stable axial chirality remains a rare feature in marketed drugs. In the development of the KRASG12C inhibitor sotorasib (LUMAKRAS/LUMYKRAS), an axially chiral biaryl moiety proved a critical structural element in engaging a "cryptic" protein binding pocket and enhancing inhibitor potency. Restricted rotation about this axis of chirality gave rise to configurationally stable atropisomers that demonstrated a 10-fold difference in potency. The decision to develop sotorasib as a single-atropisomer drug gave rise to a range of analytical and synthetic challenges, whose resolution we review here.Assessing the configurational stability of differentially substituted biaryl units in early inhibitor candidates represented the first challenge to be overcome, as differing atropisomer stability profiles called for differing development strategies (e.g., as rapidly equilibrating rotamers vs as single atropisomers). We relied on a range of NMR, HPLC, and computational methods to assess atropisomer stability. Here, we describe the various variable-temperature NMR, time-course NMR, and chiral HPLC approaches used to assess the configurational stability of axially chiral bonds displaying a range of rotational barriers.As optimal engagement of the "cryptic" pocket of KRASG12C was ultimately achieved with a configurationally stable atropisomeric linkage, the second challenge to be overcome entailed preparing the preferred (M)-atropisomer of sotorasib on industrial scale. This synthetic challenge centered on the large-scale synthesis of an atropisomerically pure building block comprising the central azaquinazolinone and pyridine rings of sotorasib. We examined a range of strategies to prepare this compound as a single atropisomer: asymmetric catalysis, chiral chromatographic purification, and classical resolution. Although chiral liquid and simulated moving bed chromatography provided expedient access to initial multikilo supplies of this key intermediate, a classical resolution process was ultimately developed that proved significantly more efficient on metric-ton scale. To avoid discarding half of the material from this resolution, this process was subsequently refined to enable thermal recycling of the undesired atropisomer, providing an even more efficient commercial process that proved both robust and green.While the preparation of sotorasib as a single atropisomer significantly increased both the analytical and synthetic complexity of its development, the axially chiral biaryl linkage that gave rise to the atropisomerism of sotorasib proved a key design element in optimizing sotorasib's binding to KRASG12C. It is hoped that this review will help in outlining the range of analytical techniques and synthetic strategies that can be brought to bear in addressing the challenges posed by such axially chiral compounds and that this account may provide helpful guidelines for future efforts aimed at the development of such single atropisomer, axially chiral pharmaceutical agents.
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Affiliation(s)
- Brian A. Lanman
- †Department
of Medicinal Chemistry and §Lead Discovery and Characterization, Amgen Inc., One Amgen Center Drive, Thousand Oaks, California91320, United States,
| | - Andrew T. Parsons
- Department
of Process Development, Drug Substance Technologies, Amgen Inc., 360 Binney
Street, Cambridge, Massachusetts02142, United States
| | - Stephan G. Zech
- †Department
of Medicinal Chemistry and §Lead Discovery and Characterization, Amgen Inc., One Amgen Center Drive, Thousand Oaks, California91320, United States
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22
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Qin W, Liu Y, Yan H. Enantioselective Synthesis of Atropisomers via Vinylidene ortho-Quinone Methides (VQMs). Acc Chem Res 2022; 55:2780-2795. [PMID: 36121104 DOI: 10.1021/acs.accounts.2c00486] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Atropisomers, arising from conformational restriction, are inherently chiral due to the intersecting dissymmetric planes. Since there are numerous applications of enantiopure atropisomers in catalyst design, drug discovery, and material science, the asymmetric preparation of these highly prized molecules has become a flourishing field in synthetic chemistry. A number of catalysts, synthetic procedures, and novel concepts have been developed for the manufacture of the atropisomeric molecules. However, due to the intrinsic properties of different types of atropisomers featuring biaryl, hetero-biaryl, or non-biaryl architectures, only very few methods pass the rigorous inspection and are considered generally applicable. The development of a broadly applicable synthetic strategy for various atropisomers is a challenge. In this Account, we summarize our recent studies on the enantioselective synthesis of atropisomers using the vinylidene ortho-quinone methides (VQMs) as pluripotent intermediates.The most appealing features of VQMs are the disturbed aromaticity and axial chirality of the allene fragment. At the outset, the applications of VQMs in organic synthesis have been neglected due to their principal liabilities: ephemeral nature, extraordinary reactivity, and multireaction sites. The domestication of this transient intermediate was demonstrated by in situ catalytic asymmetric generation of VQMs, and the reactivity and selectivity were fully explored by judiciously modifying precursors and tuning catalytic systems. A variety of axially chiral heterocycles were achieved through five-, six-, seven- and nine-membered ring formation of VQM intermediates with different kinds of branched nucleophilic functional groups. The axially chiral C-N axis could be constructed from VQM intermediates via N-annulation or desymmetrization of preformed C-N scaffolds. We take advantage of the high electrophilicity of VQMs toward a series of sulfur and carbon based nucleophiles leading to atropisomeric vinyl arenes. Furthermore, chiral helical compounds were realized by cycloaddition or consecutive annulation of VQM intermediates. These achievements demonstrated that the VQMs could work as a nuclear parent for the collective synthesis of distinct and complex optically active atropisomers. Recently, we have realized the isolation and structural characterization of the elusive VQMs, which were questioned as putative intermediates for decades. The successful isolation of VQMs provided direct evidence for their existence and an unprecedented opportunity to directly investigate their reactivity. The good thermal stability and reserved reactivity of the isolated VQMs demonstrated their great potential as synthetic reagents and expanded the border of VQM chemistry.
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Affiliation(s)
- Wenling Qin
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Yidong Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Hailong Yan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
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23
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Verdhi LK, Fridman N, Szpilman AM. Copper- and Chiral Nitroxide-Catalyzed Oxidative Kinetic Resolution of Axially Chiral N-Arylpyrroles. Org Lett 2022; 24:5078-5083. [PMID: 35798692 DOI: 10.1021/acs.orglett.2c01860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A readily prepared C2-symmetric, α-hydrogen-substituted chiral hydroxylamine serves as a precatalyst to generate a chiral nitroxide in situ. This chiral nitroxide catalyst in combination with a copper co-catalyst functions as an oxidant for an unprecedented enantioselective oxidative kinetic resolution (OKR) of racemic axially chiral N-arylpyrrole alcohols using atmospheric oxygen as an environmentally friendly terminal oxidant. The OKR process provides the axially chiral N-arylpyrroles in er up to 3.5:96.5 and with s factors up to 24.
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Affiliation(s)
- Lenin Kumar Verdhi
- Department of Chemical Sciences, Ariel University, Ariel 4070000, Israel
| | - Natalia Fridman
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 3200009, Israel
| | - Alex M Szpilman
- Department of Chemical Sciences, Ariel University, Ariel 4070000, Israel
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24
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López-Ram-de-Víu P, Gálvez JA, Díaz-de-Villegas MD. Synthesis, resolution, and absolute configuration determination of a vicinal amino alcohol with axial chirality. Application to the synthesis of new box and pybox ligands. Chirality 2022; 34:1140-1150. [PMID: 35609966 PMCID: PMC9545338 DOI: 10.1002/chir.23475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/11/2022] [Accepted: 05/12/2022] [Indexed: 11/17/2022]
Abstract
New racemic vicinal amino alcohol derivatives with 4‐benzylidenecyclohexane skeleton and axial chirality have been prepared. A preparatively easy and efficient protocol for resolution of the N‐benzoylamino alcohol is described. Using a 250 × 20 mm (L × ID) Chiralpak® IA column, and the appropriate mixture of n‐hexane/ethanol/chloroform as eluent, both enantiomers of N‐benzoylamino alcohol 3 are obtained with >99% enantiomeric excess (ee) by successive injections of a solution of the racemic sample in chloroform. The obtained axially chiral vicinal amino alcohol is used to synthesize structurally novel bisoxazoline ligands in high yields.
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Affiliation(s)
- Pilar López-Ram-de-Víu
- Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Zaragoza, Spain
| | - José A Gálvez
- Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Zaragoza, Spain
| | - María D Díaz-de-Villegas
- Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Zaragoza, Spain
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25
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Rodríguez‐Salamanca P, Fernández R, Hornillos V, Lassaletta JM. Asymmetric Synthesis of Axially Chiral C-N Atropisomers. Chemistry 2022; 28:e202104442. [PMID: 35191558 PMCID: PMC9314733 DOI: 10.1002/chem.202104442] [Citation(s) in RCA: 59] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Indexed: 12/16/2022]
Abstract
Molecules with restricted rotation around a single bond or atropisomers are found in a wide number of natural products and bioactive molecules as well as in chiral ligands for asymmetric catalysis and smart materials. Although most of these compounds are biaryls and heterobiaryls displaying a C−C stereogenic axis, there is a growing interest in less common and more challenging axially chiral C−N atropisomers. This review offers an overview of the various methodologies available for their asymmetric synthesis. A brief introduction is initially given to contextualize these axially chiral skeletons, including a historical background and examples of natural products containing axially chiral C−N axes. The preparation of different families of C−N based atropisomers is then presented from anilides to chiral five‐ and six‐membered ring heterocycles. Special emphasis has been given to modern catalytic asymmetric strategies over the past decade for the synthesis of these chiral scaffolds. Applications of these methods to the preparation of natural products and biologically active molecules will be highlighted along the text.
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Affiliation(s)
- Patricia Rodríguez‐Salamanca
- Instituto de Investigaciones Químicas (CSIC-US) and Centro deInnovación en Química Avanzada (ORFEO-CINQA)C/ Américo Vespucio, 4941092SevillaSpain
| | - Rosario Fernández
- Departamento de Química OrgánicaUniversidad de Sevilla) and Centro de Innovación en Química Avanzada (ORFEO-CINQA) C/ Prof. García González, 141012SevillaSpain
| | - Valentín Hornillos
- Instituto de Investigaciones Químicas (CSIC-US) and Centro deInnovación en Química Avanzada (ORFEO-CINQA)C/ Américo Vespucio, 4941092SevillaSpain
- Departamento de Química OrgánicaUniversidad de Sevilla) and Centro de Innovación en Química Avanzada (ORFEO-CINQA) C/ Prof. García González, 141012SevillaSpain
| | - José M. Lassaletta
- Instituto de Investigaciones Químicas (CSIC-US) and Centro deInnovación en Química Avanzada (ORFEO-CINQA)C/ Américo Vespucio, 4941092SevillaSpain
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26
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Development of Polar Organic Mode Chromatographic Method by Polysaccharide-Based Immobilized Chiral Selector and Validation for the Determination of the Enantiopurity of Novel Mineralocorticoid Receptor Antagonist Atropisomer–Esaxerenone. Chromatographia 2022. [DOI: 10.1007/s10337-022-04164-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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27
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Zhang D, Yu J. Effect of the Dihedral Angle of Biaryl-Bridged Bis( N-Heterocylic Carbene) Ligands on Enantioselectivity in Pd-Catalyzed Asymmetric Aryl–Aryl Cross-Coupling. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dao Zhang
- Department of Chemistry, Fudan University, Shanghai 200438, People’s Republic of China
| | - Jueqin Yu
- Department of Chemistry, Fudan University, Shanghai 200438, People’s Republic of China
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28
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Shen C, Zhu Y, Shen W, Jin S, Zhong L, Luo S, Xu L, Zhong G, Zhang J. Construction of axial chirality by asymmetric alpha C–H alkenylation of aryl alkenes. Org Chem Front 2022. [DOI: 10.1039/d2qo00803c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
An asymmetric α-C–H alkenylation of aryl alkenes has been disclosed to provide axially chiral aryl 1,3-dienes, proceeding through six-membered exo-cyclopalladation, assisted by an aldehyde/l-t-leucine derived transient chiral auxiliary.
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Affiliation(s)
- Cong Shen
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China
| | - Yuhang Zhu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China
| | - Wenzhou Shen
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China
| | - Shuqi Jin
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China
| | - Liangjun Zhong
- Department of Stomatology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Hangzhou, 310015, China
| | - Shuxin Luo
- Department of Stomatology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Hangzhou, 310015, China
| | - Lixia Xu
- Department of Stomatology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Hangzhou, 310015, China
| | - Guofu Zhong
- Department of Chemistry, Eastern Institute for Advanced Study, Ningbo, 315200, China
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Jian Zhang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China
- Department of Stomatology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Hangzhou, 310015, China
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29
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Li Y, Liou YC, Chen X, Ackermann L. Thioether-enabled palladium-catalyzed atroposelective C–H olefination for N−C and C−C axial chirality. Chem Sci 2022; 13:4088-4094. [PMID: 35440980 PMCID: PMC8985512 DOI: 10.1039/d2sc00748g] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 03/10/2022] [Indexed: 12/05/2022] Open
Abstract
Thioethers allowed for highly atroposelective C–H olefinations by a palladium/chiral phosphoric acid catalytic system under ambient air. Both N–C and C–C axial chiral (hetero)biaryls were successfully constructed, leading to a broad range of axially chiral N-aryl indoles and biaryls with excellent enantioselectivities up to 99% ee. Experimental and computational studies were conducted to unravel the walking mode for the atroposelective C–H olefination. A plausible chiral induction model for the enantioselectivity-determining step was established by detailed DFT calculations. Thioethers allowed for highly atroposelective C–H olefinations by a palladium/chiral phosphoric acid catalytic system under ambient air.![]()
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Affiliation(s)
- Yanjun Li
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Germany
| | - Yan-Cheng Liou
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Germany
| | - Xinran Chen
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Germany
- Department of Chemistry, Zhejiang University Hangzhou 310027 China
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Germany
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30
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Xiao X, Lu YJ, Tian HY, Zhou HJ, Li JW, Yao YP, Ke M, Chen FE. Organocatalytic atroposelective N-alkylation: divergent synthesis of axially chiral sulfonamides and biaryl amino phenols. Org Chem Front 2022. [DOI: 10.1039/d2qo00219a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Axial chirality exists ubiquitously in numerous natural products and has been extensively recognized for decades in pharmaceuticals and enantioselective transformations. The development of efficient methodologies to obtain enantiopure structures bearing...
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31
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Shao YD, Feng JS, Han DD, Pan KH, Zhang L, Wang YF, Ma ZH, Wang PR, Yin M, Cheng DJ. Construction of axially chiral styrene-type allylamines via chiral phosphoric acid-catalyzed asymmetric reductive amination. Org Chem Front 2022. [DOI: 10.1039/d1qo01672e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The first enantioselective synthesis of axially chiral styrene-type allylamines through chiral phosphoric acid mediated atroposelective reductive amination of 1-enal substituted 2-naphthols is achieved.
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Affiliation(s)
- You-Dong Shao
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Jin-Shuo Feng
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Dan-Dan Han
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Kang-Hui Pan
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Ling Zhang
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Yi-Fan Wang
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Zhong-Hui Ma
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Pei-Ru Wang
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Mingjing Yin
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Dao-Juan Cheng
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
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32
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Xu WL, Zhao WM, Zhang RX, Chen J, Zhou L. Organocatalytic cycloaddition-elimination cascade for atroposelective construction of heterobiaryls. Chem Sci 2021; 12:14920-14926. [PMID: 34820108 PMCID: PMC8597853 DOI: 10.1039/d1sc05161j] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 10/28/2021] [Indexed: 12/19/2022] Open
Abstract
The first chiral phosphoric acid (CPA) catalyzed cycloaddition–elimination cascade reaction of 2-naphthol- and phenol-derived enecarbamates with azonaphthalenes has been established, providing a highly atroposelective route to an array of axially chiral aryl-C3-benzoindoles in excellent yields with excellent enantioselectivities. The success of this strategy derives from the stepwise process involving CPA-catalyzed asymmetric formal [3 + 2] cycloaddition and subsequent central-to-axial chirality conversion by elimination of a carbamate. In addition, the practicality of this reaction had been verified by varieties of transformations towards functionalized atropisomers. An organocatalytic asymmetric cycloaddition–elimination cascade reaction of aryl enecarbamates with azonaphthalenes has been developed to access axially chiral heterobiaryls in excellent yields and enantioselectivities.![]()
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Affiliation(s)
- Wen-Lei Xu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University Xi'an 710102 P. R. China
| | - Wei-Ming Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University Xi'an 710102 P. R. China
| | - Ru-Xia Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University Xi'an 710102 P. R. China
| | - Jie Chen
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University Xi'an 710102 P. R. China
| | - Ling Zhou
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University Xi'an 710102 P. R. China
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33
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Shaaban S, Merten C, Waldmann H. Catalytic Atroposelective C7 Functionalisation of Indolines and Indoles. Chemistry 2021; 28:e202103365. [PMID: 34676929 PMCID: PMC9298066 DOI: 10.1002/chem.202103365] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Indexed: 12/15/2022]
Abstract
Axially chiral atropisomeric compounds are widely applied in asymmetric catalysis and medicinal chemistry. In particular, axially chiral indole‐ and indoline‐based frameworks have been recognised as important heterobiaryl classes because they are the core units of bioactive natural alkaloids, chiral ligands and bioactive compounds. Among them, the synthesis of C7‐substituted indole biaryls and the analogous indoline derivatives is particularly challenging, and methods for their efficient synthesis are in high demand. Transition‐metal catalysis is considered one of the most efficient methods to construct atropisomers. Here, we report the enantioselective synthesis of C7‐indolino‐ and C7‐indolo biaryl atropisomers by means of C−H functionalisation catalysed by chiral RhJasCp complexes.
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Affiliation(s)
- Saad Shaaban
- Max Planck Institute of Molecular Physiology, Department of Chemical Biology, Otto-Hahn-Straße 11, 44227, Dortmund, Germany
| | - Christian Merten
- Ruhr University Bochum, Department of Organic Chemistry, Universität Straße 150, 44801, Bochum, Germany
| | - Herbert Waldmann
- Max Planck Institute of Molecular Physiology, Department of Chemical Biology, Otto-Hahn-Straße 11, 44227, Dortmund, Germany.,Technical University Dortmund, Faculty of Chemical Biology, Otto-Hahn-Straße 4a, 44227, Dortmund, Germany
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34
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Wang Y, Xiang S, Tan B. Application in Drugs and Materials. AXIALLY CHIRAL COMPOUNDS 2021:297-315. [DOI: 10.1002/9783527825172.ch11] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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35
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Woźniak Ł, Cramer N. Atropo-Enantioselective Oxidation-Enabled Iridium(III)-Catalyzed C-H Arylations with Aryl Boronic Esters. Angew Chem Int Ed Engl 2021; 60:18532-18536. [PMID: 34153163 PMCID: PMC8457206 DOI: 10.1002/anie.202106403] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/16/2021] [Indexed: 12/18/2022]
Abstract
Atropo-enantioselective biaryl coupling through C-H bond functionalization is an emerging technology allowing direct construction of axially chiral molecules. This approach is largely limited to electrophilic coupling partners. We report a highly atropo-enantioselective C-H arylation of tetralone derivatives paired with aryl boronic esters as nucleophilic components. The transformation is catalyzed by chiral cyclopentadienyl (Cpx ) iridium(III) complexes and enabled by oxidatively enhanced reductive elimination from high-valent cyclometalated Ir-species.
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Affiliation(s)
- Łukasz Woźniak
- Institute of Chemical Sciences and Engineering (ISIC)EPFL SB ISIC LCSABCH 43051015LausanneSwitzerland
| | - Nicolai Cramer
- Institute of Chemical Sciences and Engineering (ISIC)EPFL SB ISIC LCSABCH 43051015LausanneSwitzerland
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36
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Woźniak Ł, Cramer N. Atropo‐Enantioselective Oxidation‐Enabled Iridium(III)‐Catalyzed C−H Arylations with Aryl Boronic Esters. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Łukasz Woźniak
- Institute of Chemical Sciences and Engineering (ISIC) EPFL SB ISIC LCSA BCH 4305 1015 Lausanne Switzerland
| | - Nicolai Cramer
- Institute of Chemical Sciences and Engineering (ISIC) EPFL SB ISIC LCSA BCH 4305 1015 Lausanne Switzerland
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37
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Yang K, Mao Y, Xu J, Wang H, He Y, Li W, Song Q. Construction of Axially Chiral Arylborons via Atroposelective Miyaura Borylation. J Am Chem Soc 2021; 143:10048-10053. [PMID: 34180660 DOI: 10.1021/jacs.1c04345] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Compared with the well-developed centrally chiral boron chemistry, C-B axially chiral chemistry remains elusive and challenging. Herein we report the first atroposelective Miyaura borylation of bromoarenes with unsymmetrical diboron reagents for the direct catalytic synthesis of optically active atropisomeric arylborons. This reaction features broad substrate scope and produces axially chiral arylborons with high yields and good enantioselectivities.
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Affiliation(s)
- Kai Yang
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
| | - Yanfei Mao
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
| | - Jie Xu
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
| | - Hao Wang
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
| | - Yong He
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
| | - Wangyang Li
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
| | - Qiuling Song
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China.,Institute of Next Generation Matter Transformation, College of Materials Science Engineering, Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, China
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38
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Martin HS, Podolsky KA, Devaraj NK. Probing the Role of Chirality in Phospholipid Membranes. Chembiochem 2021; 22:3148-3157. [PMID: 34227722 DOI: 10.1002/cbic.202100232] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 07/04/2021] [Indexed: 11/09/2022]
Abstract
Nucleotides, amino acids, sugars, and lipids are almost ubiquitously homochiral within individual cells on Earth. While oligonucleotides and proteins exist as one natural chirality throughout the tree of life, two stereoisomers of phospholipids have separately emerged in archaea and bacteria, an evolutionary divergence known as "the lipid divide". Within this review, we focus on the emergence of phospholipid homochirality and compare the stability of synthetic homochiral and heterochiral membranes in vitro. We discuss chemical probes designed to study the stereospecific interactions of lipid membranes in vitro. Overall, we aim to highlight studies that help elucidate the determinants of stereospecific interactions between lipids, peptides, and small molecule ligands. Continued work in understanding the drivers of favorable interactions between chiral molecules and biological membranes will lead to the design of increasingly selective chemical tools for bioorthogonal labeling of lipid membranes and safer membrane-associating pharmaceuticals.
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Affiliation(s)
- Hannah S Martin
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093, USA
| | - Kira A Podolsky
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093, USA
| | - Neal K Devaraj
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093, USA
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39
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de Ceuninck van Capelle LA, Macdonald JM, Hyland CJT. Stereogenic and conformational properties of medium-ring benzo-fused N-heterocycle atropisomers. Org Biomol Chem 2021; 19:7098-7115. [PMID: 34190302 DOI: 10.1039/d1ob00836f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Medium-ring (7-9-membered) benzo-fused N-heterocycles - a core structure in several important pharmaceuticals - have a diverse range of interesting conformational and stereochemical properties which arise from restricted bond rotation in the non-aromatic ring. The atropisomers of these pharmaceutically relevant N-heterocycles typically exhibit different biological activities, warranting the need to deeply understand the factors controlling the conformation and stereochemistry of the systems. Beginning with a brief introduction to atropisomer classification, this review will detail a number of medium-ring benzo-fused N-heterocycle systems from the recent literature to provide an overview of structural factors which can affect the atropisomeric nature of the systems by altering the overall conformation and rate of stereo-inversion. As well as general factors such as ring-size and sterics, the impact of additional stereocentres in these systems will be addressed. This includes the differences between sulfur, nitrogen and carbon stereocentres, and the consequences of stereocentre placement around the N-heterocycle ring. Further, conformational stabilisation via non-covalent intramolecular bonds will be explored. As such, this review represents a significant resource for aiding in the design, synthesis and study of new and potentially bioactive medium-ring benzo-fused N-heterocycles.
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Affiliation(s)
- Lillian A de Ceuninck van Capelle
- Molecular Horizons Research Institute, School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.
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40
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Wang J, Sun M, Yu X, Zhang Y, Tan W, Shi F. Atroposelective Construction of Axially Chiral
Alkene‐Indole
Scaffolds
via
Catalytic Enantioselective Addition Reaction of
3‐Alkynyl
‐2‐indolylmethanols
†. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100214] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jing‐Yi Wang
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou Jiangsu 221116 China
| | - Meng Sun
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou Jiangsu 221116 China
| | - Xian‐Yang Yu
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou Jiangsu 221116 China
| | - Yu‐Chen Zhang
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou Jiangsu 221116 China
| | - Wei Tan
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou Jiangsu 221116 China
| | - Feng Shi
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou Jiangsu 221116 China
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41
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Xu MM, You XY, Zhang YZ, Lu Y, Tan K, Yang L, Cai Q. Enantioselective Synthesis of Axially Chiral Biaryls by Diels-Alder/Retro-Diels-Alder Reaction of 2-Pyrones with Alkynes. J Am Chem Soc 2021; 143:8993-9001. [PMID: 34106720 DOI: 10.1021/jacs.1c04759] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The enantioselective synthesis of axially chiral biaryls by a copper-catalyzed Diels-Alder/retro-Diels-Alder reaction of 2-pyrones with alkynes is reported herein. Using electron-deficient 2-pyrones and electron-rich 1-naphthyl acetylenes as the reaction partners, a broad range of axially chiral biaryl esters are obtained in excellent yields (up to 97% yield) and enantioselectivities (up to >99% ee). DFT calculations reveal the reaction mechanism and provide insights into the origins of the stereoselectivities. The practicality and robustness of this reaction are showcased by gram-scale synthesis. The synthetic utilizations are demonstrated by the amenable transformations of the products.
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Affiliation(s)
- Meng-Meng Xu
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Xin-Yu You
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Yu-Zhen Zhang
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Yang Lu
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Kui Tan
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Limin Yang
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Quan Cai
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
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42
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Jin J, Huang X, Xu J, Li T, Peng X, Zhu X, Zhang J, Jin Z, Chi YR. Carbene-Catalyzed Atroposelective Annulation and Desymmetrization of Urazoles. Org Lett 2021; 23:3991-3996. [PMID: 33979174 DOI: 10.1021/acs.orglett.1c01191] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An NHC-catalyzed atroposelective reaction between ynals and urazoles is disclosed. The reaction establishes a chiral C-N axis via an atroposelective [3 + 2] annulation/desymmetrization process. Our reaction allows efficient access to axially chiral and heteroatom-rich urazole derivatives with potential applications in bioactive molecules and catalysis.
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Affiliation(s)
- Jiamiao Jin
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Xuan Huang
- International Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Jun Xu
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Huaxi District, Guiyang 550025, China
| | - Tingting Li
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Xiaolin Peng
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Xun Zhu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Junmin Zhang
- International Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Zhichao Jin
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Yonggui Robin Chi
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China.,Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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43
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He QF, Wu ZL, Huang XJ, Xia TQ, Tang G, Tang W, Shi L, Ye WC, Wang Y. Cajanusoids A-D, Unusual Atropisomeric Stilbene Dimers with PTP1B Inhibitory Activities from the Leaves of Cajanus cajan. J Org Chem 2021; 86:5870-5882. [PMID: 33829799 DOI: 10.1021/acs.joc.1c00295] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Four novel stilbene dimers (1-4), together with their biosynthetically related stilbene monomers (5 and 6), were isolated from the leaves of Cajanus cajan. Their structures with absolute configurations were determined by comprehensive analysis of spectroscopic data and electronic circular dichroism calculations. Compounds 1 and 2 are two novel dimeric stilbenes with an unusual coupling pattern that resulted in a rare configurationally stable Csp2-Csp3 chiral axis with both point and axial chirality in their molecules. Due to their unique inherent structural features, both of them naturally occur as equilibrating mixtures of unequally populated atropo-diastereomers and their respective enantiomers. Compounds 3 and 4 are two pairs of novel dimeric stilbene atropisomers featuring a rotationally hindered central biaryl axis. Notably, 3 contains a rare arylbenzoquinone core and 4 is a symmetric dimer with a C2 symmetry axis. The hypothetical biosynthetic pathway of 1-4 was also proposed herein. All the new compounds exhibited significant protein tyrosine phosphatase-1B (PTP1B) inhibition effects. In addition, the preliminary mode of action for the most potent compound 3 was investigated by molecular docking and binding free energy calculation.
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Affiliation(s)
- Qi-Fang He
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Zhen-Long Wu
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Xiao-Jun Huang
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Tian-Qi Xia
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Genyun Tang
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China.,School of Medicine, Hunan Provincial Key Laboratory of Dong Medicine, Hunan University of Medicine, Huaihua 418000, People's Republic of China
| | - Wei Tang
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Lei Shi
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Wen-Cai Ye
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Ying Wang
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
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44
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Yoganathan S, Alagaratnam A, Acharekar N, Kong J. Ellagic Acid and Schisandrins: Natural Biaryl Polyphenols with Therapeutic Potential to Overcome Multidrug Resistance in Cancer. Cells 2021; 10:458. [PMID: 33669953 PMCID: PMC7924821 DOI: 10.3390/cells10020458] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/16/2021] [Accepted: 02/19/2021] [Indexed: 02/06/2023] Open
Abstract
Multidrug resistance (MDR) is one of the major clinical challenges in cancer treatment and compromises the effectiveness of conventional anticancer chemotherapeutics. Among known mechanisms of drug resistance, drug efflux via ATP binding cassette (ABC) transporters, namely P-glycoprotein (P-gp) has been characterized as a major mechanism of MDR. The primary function of ABC transporters is to regulate the transport of endogenous and exogenous small molecules across the membrane barrier in various tissues. P-gp and similar efflux pumps are associated with MDR because of their overexpression in many cancer types. One of the intensively studied approaches to overcome this mode of MDR involves development of small molecules to modulate P-gp activity. This strategy improves the sensitivity of cancer cells to anticancer drugs that are otherwise ineffective. Although multiple generations of P-gp inhibitors have been identified to date, reported compounds have demonstrated low clinical efficacy and adverse effects. More recently, natural polyphenols have emerged as a promising class of compounds to address P-gp linked MDR. This review highlights the chemical structure and anticancer activities of selected members of a structurally unique class of 'biaryl' polyphenols. The discussion focuses on the anticancer properties of ellagic acid, ellagic acid derivatives, and schisandrins. Research reports regarding their inherent anticancer activities and their ability to sensitize MDR cell lines towards conventional anticancer drugs are highlighted here. Additionally, a brief discussion about the axial chirality (i.e., atropisomerism) that may be introduced into these natural products for medicinal chemistry studies is also provided.
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Affiliation(s)
- Sabesan Yoganathan
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, 8000 Utopia Parkway, Queens, NY 11439, USA; (A.A.); (N.A.); (J.K.)
| | - Anushan Alagaratnam
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, 8000 Utopia Parkway, Queens, NY 11439, USA; (A.A.); (N.A.); (J.K.)
- Department of Chemistry, St. John’s College of Liberal Arts and Sciences, St. John’s University, 8000 Utopia Parkway, Queens, NY 11439, USA
| | - Nikita Acharekar
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, 8000 Utopia Parkway, Queens, NY 11439, USA; (A.A.); (N.A.); (J.K.)
| | - Jing Kong
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, 8000 Utopia Parkway, Queens, NY 11439, USA; (A.A.); (N.A.); (J.K.)
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45
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Bera S, Sarkar S, Samanta R. Recent quinone diazide based transformations via metal–carbene formation. NEW J CHEM 2021. [DOI: 10.1039/d1nj01678d] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Recent advancements in versatile synthetic transformations using quinone diazide based metal carbenes have been summarized.
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Affiliation(s)
- Satabdi Bera
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Souradip Sarkar
- 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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46
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Shao YD, Han DD, Dong MM, Yang XR, Cheng DJ. A one-pot stepwise approach to axially chiral quinoline-3-carbaldehydes enabled by iminium–allenamine cascade catalysis. Org Chem Front 2021. [DOI: 10.1039/d0qo01339k] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An organocatalytic atroposelective annulation between 2-(tosylamino)aryl ketones and 2-alkynals for the construction of enantioenriched axially chiral 4-arylquinoline-3-carbaldehydes is achieved.
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Affiliation(s)
- You-Dong Shao
- School of Chemistry and Chemical Engineering
- Heze University
- China
| | - Dan-Dan Han
- School of Chemistry and Chemical Engineering
- Heze University
- China
| | - Meng-Meng Dong
- School of Chemistry and Chemical Engineering
- Heze University
- China
| | - Xin-Ru Yang
- School of Chemistry and Chemical Engineering
- Heze University
- China
| | - Dao-Juan Cheng
- School of Pharmacy
- Anhui University of Chinese Medicine
- China
- School of Chemistry and Chemical Engineering
- Heze University
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47
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Zhao Q, Peng C, Wang YT, Zhan G, Han B. Recent progress on the construction of axial chirality through transition-metal-catalyzed benzannulation. Org Chem Front 2021. [DOI: 10.1039/d1qo00307k] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Useful chiral biaryls have been constructed through rhodium and gold complex-catalyzed asymmetric benzannulation strategies.
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Affiliation(s)
- Qian Zhao
- State Key Laboratory of Southwestern Chinese Medicine Resources
- Hospital of Chengdu University of Traditional Chinese Medicine
- School of Basic Medical Sciences
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources
- Hospital of Chengdu University of Traditional Chinese Medicine
- School of Basic Medical Sciences
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
| | - Yu-Ting Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources
- Hospital of Chengdu University of Traditional Chinese Medicine
- School of Basic Medical Sciences
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
| | - Gu Zhan
- State Key Laboratory of Southwestern Chinese Medicine Resources
- Hospital of Chengdu University of Traditional Chinese Medicine
- School of Basic Medical Sciences
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
| | - Bo Han
- State Key Laboratory of Southwestern Chinese Medicine Resources
- Hospital of Chengdu University of Traditional Chinese Medicine
- School of Basic Medical Sciences
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
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48
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Shao Y, Cheng D. Chiral Phosphoric Acid: A Powerful Organocatalyst for the Asymmetric Synthesis of Heterocycles with Chiral Atropisomerism. ChemCatChem 2020. [DOI: 10.1002/cctc.202001750] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- You‐Dong Shao
- School of Chemistry and Chemical Engineering Heze University Heze 274015 P. R. China
| | - Dao‐Juan Cheng
- School of Pharmacy Anhui University of Chinese Medicine Hefei 230012 P. R. China
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49
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Byrne L, Sköld C, Norrby P, Munday RH, Turner AR, Smith PD. Enantioselective Synthesis of Atropisomeric Biaryls using Biaryl 2,5‐Diphenylphospholanes as Ligands for Palladium‐Catalysed Suzuki‐Miyaura Reactions. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001211] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Liam Byrne
- Early Chemical Development, Pharmaceutical Sciences, R&D AstraZeneca Macclesfield UK
| | - Christian Sköld
- Drug Design and Discovery, Department of Medicinal Chemistry Uppsala University 751 23 Uppsala Sweden
| | - Per‐Ola Norrby
- Data Science & Modelling, Pharmaceutical Sciences, R&D AstraZeneca Gothenburg Sweden
| | - Rachel H. Munday
- Chemical Development, Pharmaceutical Technology & Development, Operations AstraZeneca Macclesfield UK
| | - Andrew R. Turner
- Early Chemical Development, Pharmaceutical Sciences, R&D AstraZeneca Macclesfield UK
| | - Peter D. Smith
- Early Chemical Development, Pharmaceutical Sciences, R&D AstraZeneca Macclesfield UK
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50
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Abbasnia M, Sheykhan M, Ghaffari T, Safari E. Approach to the Synthesis of Unsymmetrical/Symmetrical Maleimides via Desulfitative Arylation at Different Temperatures. J Org Chem 2020; 85:11688-11698. [DOI: 10.1021/acs.joc.0c01323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Masoumeh Abbasnia
- Chemistry Department, University of Guilan, P.O. Box 41335-1914, 4193833697 Rasht, Iran
| | - Mehdi Sheykhan
- Chemistry Department, University of Guilan, P.O. Box 41335-1914, 4193833697 Rasht, Iran
| | - Tahereh Ghaffari
- Chemistry Department, University of Guilan, P.O. Box 41335-1914, 4193833697 Rasht, Iran
| | - Elham Safari
- Chemistry Department, University of Guilan, P.O. Box 41335-1914, 4193833697 Rasht, Iran
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