1
|
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.
Collapse
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
| |
Collapse
|
2
|
Xu Z, Wang Z, Shi X, Ding R, Han L, Yang X, Zhang H, Hobson AD. Impact of atropisomerism on a non-steroidal glucocorticoid receptor agonist. RSC Med Chem 2024; 15:2357-2371. [PMID: 39026657 PMCID: PMC11253871 DOI: 10.1039/d4md00245h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Accepted: 05/30/2024] [Indexed: 07/20/2024] Open
Abstract
To investigate atropisomers of non-steroidal glucocorticoid receptor modulator GSK866, a virtual library of substituted benzoic acid analogues was enumerated. Compounds from this library were subjected to a torsion angle scan using Spartan'20 to calculate the torsion rotation energy barrier which identified compounds predicted to be stable as atropisomers. After synthesis of the library, analysis showed that compounds 13 and 14 existed as stable atropisomers 13a, 13b, 14a and 14b, in agreement with the earlier calculations. Screening in a glucocorticoid receptor cellular assay showed that one compound from each atropisomer pair was significantly more potent than the other. Docking in a public structure of the glucocorticoid receptor (PBD code 3E7C) enabled the stereochemistry of the two most potent compounds 13a and 14b to be assigned as (R a) and (S a), respectively.
Collapse
Affiliation(s)
- Zhou Xu
- WuXi AppTec, Tianjin Economic-Technological Development Area TEDA 168 Nanhai Road, TJS 300457 China
| | - Zhongyuan Wang
- WuXi AppTec, Tianjin Economic-Technological Development Area TEDA 168 Nanhai Road, TJS 300457 China
| | - Xiaona Shi
- WuXi AppTec, Tianjin Economic-Technological Development Area TEDA 168 Nanhai Road, TJS 300457 China
| | - Rui Ding
- WuXi AppTec, Tianjin Economic-Technological Development Area TEDA 168 Nanhai Road, TJS 300457 China
| | - Li Han
- WuXi AppTec, Waigaoqiao Free Trade Zone 288 Fute Zhong Road, Pudong New Area Shanghai 200131 China
| | - Xueping Yang
- WuXi AppTec, Waigaoqiao Free Trade Zone 288 Fute Zhong Road, Pudong New Area Shanghai 200131 China
| | - Hongmei Zhang
- WuXi AppTec, Waigaoqiao Free Trade Zone 288 Fute Zhong Road, Pudong New Area Shanghai 200131 China
| | - Adrian D Hobson
- AbbVie Bioresearch Center 381 Plantation Street Worcester Massachusetts 01605 USA
| |
Collapse
|
3
|
Watanabe K, Tsurumaki E, Hasegawa M, Toyota S. Structure and Chiroptical Properties of Anthra[1,2-a]anthracene-1-yl Dimers as New Biaryls. Chemistry 2024; 30:e202400929. [PMID: 38554080 DOI: 10.1002/chem.202400929] [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: 03/05/2024] [Revised: 03/23/2024] [Accepted: 03/30/2024] [Indexed: 04/01/2024]
Abstract
Dimers of anthra[1,2-a]anthracene-1-yl units and its mesityl derivative were synthesized by Ni(0)-mediated coupling of the corresponding chloro derivatives as new biaryls. The X-ray analysis and DFT calculations revealed that two polycyclic aromatic units with nonplanar deformations took a twisted conformation about the single bond as a chiral axis. Enantiomers of the nonsubstituted compound were resolved by chiral HPLC, and the enantiopure samples showed intense Cotton effects at 321 nm in the circular dichroism (CD) spectra and emission bands at 449 nm in the circularly polarized luminescence (CPL) spectra with dissymmetry factor of |glum| 3.6×10-3. The absolute stereochemistry of this biaryl was determined by the theoretical calculation of CD spectrum by the time-dependent DFT method. The barrier to enantiomerization was determined to be 108 kJ mol-1 at 298 K. The dynamic process proceeded via a stepwise mechanism involving the helical inversion of each aromatic unit and the rotation about the biaryl axis as analyzed by the DFT calculations.
Collapse
Affiliation(s)
- Kota Watanabe
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Eiji Tsurumaki
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Masashi Hasegawa
- Department of Chemistry, School of Science, Kitasato University, Sagamihara, Kanagawa, 252-0373, Japan
| | - Shinji Toyota
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| |
Collapse
|
4
|
Guan CY, Zou S, Luo C, Li ZY, Huang M, Huang L, Xiao X, Wei D, Wang MC, Mei GJ. Catalytic asymmetric synthesis of planar-chiral dianthranilides via (Dynamic) kinetic resolution. Nat Commun 2024; 15:4580. [PMID: 38811566 PMCID: PMC11136957 DOI: 10.1038/s41467-024-48947-1] [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: 10/12/2023] [Accepted: 05/20/2024] [Indexed: 05/31/2024] Open
Abstract
Chirality constitutes an inherent attribute of nature. The catalytic asymmetric synthesis of molecules with central, axial, and helical chirality is a topic of intense interest and is becoming a mature field of research. However, due to the difficulty in synthesis and the lack of a prototype, less attention has been given to planar chirality arising from the destruction of symmetry on a single planar ring. Herein, we report the catalytic asymmetric synthesis of planar-chiral dianthranilides, a unique class of tub-shaped eight-membered cyclic dilactams. This protocol is enabled by cinchona alkaloid-catalyzed (dynamic) kinetic resolution. Under mild conditions, various C2- or C1-symmetric planar-chiral dianthranilides have been readily prepared in high yields with excellent enantioselectivity. These dianthranilides can serve as an addition to the family of planar-chiral molecules. Its synthetic value has been demonstrated by kinetic resolution of racemic amines via acyl transfer, enantiodivergent synthesis of the natural product eupolyphagin, and preliminary antitumor activity studies.
Collapse
Affiliation(s)
- Chun-Yan Guan
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, College of Chemistry, Zhengzhou University, Zhengzhou, China
| | - Shuai Zou
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, College of Chemistry, Zhengzhou University, Zhengzhou, China
| | - Can Luo
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, College of Chemistry, Zhengzhou University, Zhengzhou, China
| | - Zhen-Yu Li
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, College of Chemistry, Zhengzhou University, Zhengzhou, China
| | - Mingjie Huang
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, College of Chemistry, Zhengzhou University, Zhengzhou, China
| | - Lihua Huang
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, College of Chemistry, Zhengzhou University, Zhengzhou, China.
- Pingyuan Laboratory (Zhengzhou University), Zhengzhou, China.
| | - Xiao Xiao
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, China
| | - Donghui Wei
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, College of Chemistry, Zhengzhou University, Zhengzhou, China
| | - Min-Can Wang
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, College of Chemistry, Zhengzhou University, Zhengzhou, China
| | - Guang-Jian Mei
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, College of Chemistry, Zhengzhou University, Zhengzhou, China.
- Pingyuan Laboratory (Zhengzhou University), Zhengzhou, China.
| |
Collapse
|
5
|
Kirsch P, Dlugosch JM, Kamiyama T, Pfeiffer C, Seim H, Resch S, Voges F, Lieberman I, Nalakath AN, Liu Y, Zharnikov M, Tornow M. Restricting Conformational Space: A New Blueprint for Electrically Switchable Self-Assembled Monolayers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2308072. [PMID: 38698574 DOI: 10.1002/smll.202308072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 04/18/2024] [Indexed: 05/05/2024]
Abstract
Tunnel junctions comprising self-assembled monolayers (SAMs) from liquid crystal-inspired molecules show a pronounced hysteretic current-voltage response, due to electric field-driven dipole reorientation in the SAM. This renders these junctions attractive device candidates for emerging technologies such as in-memory and neuromorphic computing. Here, the novel molecular design, device fabrication, and characterization of such resistive switching devices with a largely improved performance, compared to the previously published work are reported. Those former devices suffer from a stochastic switching behavior limiting reliability, as well as from critically small read-out currents. The present progress is based on replacing Al/AlOx with TiN as a new electrode material and as a key point, on redesigning the active molecular material making up the SAM: a previously present, flexible aliphatic moiety has been replaced by a rigid aromatic linker, thereby introducing a molecular "ratchet". This restricts the possible molecular conformations to only two major states of opposite polarity. The above measures have resulted in an increase of the current density by five orders of magnitude as well as in an ON/OFF conductance ratio which is more than ten times higher than the individual scattering ranges of the high and low resistance states.
Collapse
Affiliation(s)
- Peer Kirsch
- Merck Electronics KGaA, Frankfurter Str. 250, D-64293, Darmstadt, Germany
- Institute of Materials Science, Technical University of Darmstadt, Peter-Grünberg-Str. 2D, D-64287, Darmstadt, Germany
- Freiburg Materials Research Center (FMF), Albert Ludwig University Freiburg, Stefan-Meier-Str. 21, D-79104, Freiburg, Germany
| | - Julian M Dlugosch
- Molecular Electronics, Technical University of Munich, Hans-Piloty-Str. 1, D-85748, Garching, Germany
| | - Takuya Kamiyama
- Molecular Electronics, Technical University of Munich, Hans-Piloty-Str. 1, D-85748, Garching, Germany
| | - Christian Pfeiffer
- Molecular Electronics, Technical University of Munich, Hans-Piloty-Str. 1, D-85748, Garching, Germany
| | - Henning Seim
- Merck Electronics KGaA, Frankfurter Str. 250, D-64293, Darmstadt, Germany
| | - Sebastian Resch
- Merck Electronics KGaA, Frankfurter Str. 250, D-64293, Darmstadt, Germany
| | - Frank Voges
- Merck Electronics KGaA, Frankfurter Str. 250, D-64293, Darmstadt, Germany
| | - Itai Lieberman
- Merck Electronics KGaA, Frankfurter Str. 250, D-64293, Darmstadt, Germany
| | - Abin Nas Nalakath
- Institute of Materials Science, Technical University of Darmstadt, Peter-Grünberg-Str. 2D, D-64287, Darmstadt, Germany
| | - Yangbiao Liu
- Angewandte Physikalische Chemie, Heidelberg University, Im Neuenheimer Feld 253, D-69120, Heidelberg, Germany
| | - Michael Zharnikov
- Angewandte Physikalische Chemie, Heidelberg University, Im Neuenheimer Feld 253, D-69120, Heidelberg, Germany
| | - Marc Tornow
- Molecular Electronics, Technical University of Munich, Hans-Piloty-Str. 1, D-85748, Garching, Germany
- Fraunhofer Institute for Electronic Microsystems and Solid State Technologies (EMFT), Hansastr. 27d, D-80686, Munich, Germany
| |
Collapse
|
6
|
Ximenes VF, Yoguim MI, de Souza AR, Morgon NH. Circular dichroism spectrum of (R)-(+)-3,3'-dibromo-1,1'-bi-2-naphthol in albumin: Alterations caused by complexation-Experimental and in silico investigation. Chirality 2024; 36:e23675. [PMID: 38699899 DOI: 10.1002/chir.23675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 04/09/2024] [Accepted: 04/17/2024] [Indexed: 05/05/2024]
Abstract
This study describes the interaction of human serum albumin (HSA) with the binol derivative (R)-(+)-3,3'-dibromo-1,1'-bi-2-naphthol (R-BrB), which has its optical activity based on the prohibitive energetic barrier for conversion into the enantiomer (S)-(+)-3,3'-dibromo-1,1'-bi-2-naphthol (S-BrB). The objective was to assess the ability of HSA to differentiate axial enantiomers based on their binding efficiency and their impact on the CD spectra. We discovered that both enantiomers were effective ligands, and the CD signal disappeared when equimolar amounts of R-BrB and S-BrB were simultaneously added, indicating no preference for either enantiomer. The complexation resulted in a significant signal increase at 250 nm and a bathochromic effect at 370 nm. Molecular docking simulations were performed, and the lower energy pose of R-BrB was selected for DFT calculations. The theoretical CD spectra of free and complexed R-BrB were obtained and showed alterations corroborating the experimental results. By comparing the difference spectrum (HSA:R-BrB minus HSA) with the spectrum of free RBrB in water or ethyl alcohol, we concluded that the CD signal intensification was due to the increased solubilization of R-BrB upon binding to HSA.
Collapse
Affiliation(s)
- Valdecir Farias Ximenes
- Department Chemistry, Faculty of Science, São Paulo State University (UNESP), Bauru, SP, Brazil
| | - Maurício Ikeda Yoguim
- Department Chemistry, Faculty of Science, São Paulo State University (UNESP), Bauru, SP, Brazil
| | | | - Nelson Henrique Morgon
- Department of Physical Chemistry, Institute of Chemistry Campinas State University (UNICAMP), Campinas, SP, Brazil
| |
Collapse
|
7
|
Li S, Zhang Q, Wang Y, Lin B, Li D, Hua H, Hu X. β-Carboline alkaloids from the roots of Peganum harmala L. Chin J Nat Med 2024; 22:171-177. [PMID: 38342569 DOI: 10.1016/s1875-5364(24)60583-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Indexed: 02/13/2024]
Abstract
This study reports the isolation of four new β-carboline alkaloids (1-4) and six previously identified alkaloids (5-10) from the roots of Peganum harmala L. Among these compounds, 1 and 2 were characterized as rare β-carboline-quinazoline dimers exhibiting axial chirality. Compound 3 possessed a unique 6/5/6/7 tetracyclic ring system with an azepine ring, and compound 4 was a novel annomontine β-carboline. The structures of these compounds were elucidated by spectroscopic data and quantum mechanical calculations. The biosynthetic pathways of 1-3 were proposed. Additionally, the cytotoxicity of some isolates against four cancer cell lines (HL-60, A549, MDA-MB-231, and DU145) was evaluated. Notably, compound 4 exhibited significant cytotoxicity against HL-60, A549, and DU145 cells with IC50 values of 12.39, 12.80, and 30.65 μmol·L-1, respectively. Furthermore, compound 2 demonstrated selective cytotoxicity against HL-60 cells with an IC50 value of 17.32 μmol·L-1.
Collapse
Affiliation(s)
- Shengge Li
- Henan Key Laboratory of Zhang Zhongjing Formulate and Herbs for Immunoregulation, Zhang Zhongjing Traditional School of Chinese Medicine, Nanyang Institute of Technology, Nanyang 473004, China
| | - Qin Zhang
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yuetong Wang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Bin Lin
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Dahong Li
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Huiming Hua
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Xu Hu
- Henan Key Laboratory of Zhang Zhongjing Formulate and Herbs for Immunoregulation, Zhang Zhongjing Traditional School of Chinese Medicine, Nanyang Institute of Technology, Nanyang 473004, China.
| |
Collapse
|
8
|
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.
Collapse
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
| |
Collapse
|
9
|
Yang B, Yan S, Li C, Ma H, Feng F, Zhang Y, Huang W. Mn(iii)-mediated C-P bond activation of diphosphines: toward a highly emissive phosphahelicene cation scaffold and modulated circularly polarized luminescence. Chem Sci 2023; 14:10446-10457. [PMID: 37799992 PMCID: PMC10548521 DOI: 10.1039/d3sc03201a] [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: 06/23/2023] [Accepted: 08/11/2023] [Indexed: 10/07/2023] Open
Abstract
Transition metal mediated C-X (X = H, halogen) bond activation provides an impressive protocol for building polyaromatic hydrocarbons (PAHs) in C-C bond coupling and annulation; however, mimicking both the reaction model and Lewis acid mediator simultaneously in a hetero-PAH system for selective C-P bond cleavage faces unsolved challenges. At present, developing the C-P bond activation protocol of the phosphonic backbone using noble-metal complexes is a predominant passway for the construction of phosphine catalysts and P-center redox-dependent photoelectric semiconductors, but non-noble metal triggered methods are still elusive. Herein, we report Mn(iii)-mediated C-P bond activation and intramolecular cyclization of diphosphines by a redox-directed radical phosphonium process, generating phosphahelicene cations or phosphoniums with nice regioselectivity and substrate universality under mild conditions. Experiments and theoretical calculations revealed the existence of the unusual radical mechanism and electron-deficient character of novel phosphahelicenes. These rigid quaternary bonding skeletons facilitated versatile fluorescence with good tunability and excellent efficiency. Moreover, the enantiomerically enriched crystals of phosphahelicenes emitted intense circularly polarized luminescence (CPL). Notably, the modulated CPL of racemic phosphahelicenes was induced by chiral transmission in the cholesteric mesophase, showing ultrahigh asymmetry factors of CPL (+0.51, -0.48). Our findings provide a new approach for the design of emissive phosphahelicenes towards chiral emitters and synthesized precursors.
Collapse
Affiliation(s)
- Bo Yang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210093 P. R. China
| | - Suqiong Yan
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210093 P. R. China
| | - Chengbo Li
- School of Materials and Energy, University of Electronic Science and Technology of China Chengdu 610000 P. R. China
| | - Hui Ma
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210093 P. R. China
| | - Fanda Feng
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210093 P. R. China
| | - Yuan Zhang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210093 P. R. China
| | - Wei Huang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210093 P. R. China
- Shenzhen Research Institute of Nanjing University Shenzhen 51805 P. R. China
| |
Collapse
|
10
|
Li Y, Duan XY, Yang C, Wei Y, Li J, Ren X, Qi J. Atroposelective Access to Dihydropyridinones with C-N Axial and Point Chirality via NHC-Catalyzed [3 + 3] Annulation. J Org Chem 2023. [PMID: 37449806 DOI: 10.1021/acs.joc.3c00854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
An N-heterocyclic carbene-catalyzed atroposelective [3 + 3] annulation of enals with 2-aminomaleate derivatives is described. A series of substituted dihydropyridones bearing both C-N axis and point chirality were synthesized with good diastereo- and enantioselectivity under mild conditions. This efficient strategy successfully superpositions an extra point chiral element with an axial backbone, and the generated structurally interesting atropisomers may have potential application in drug discovery.
Collapse
|
11
|
Senda R, Watanabe Y, Miwa S, Sato A, Kitagawa O. Synthesis of Isotopic Atropisomers Based on 12C/ 13C Discrimination. J Org Chem 2023. [PMID: 37300502 DOI: 10.1021/acs.joc.3c01004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Quinazolin-4-one derivatives possessing an isotopic atropisomerism (isotopic N-C axial chirality) based on ortho-12CH3/13CH3 discrimination were prepared. The diastereomeric quinazolin-4-ones bearing an asymmetric carbon as well as an isotopic atropisomerism were clearly discriminated by 1H and 13C NMR spectra and revealed to possess high rotational stability and stereochemical purity.
Collapse
Affiliation(s)
- Ryunosuke Senda
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Yuka Watanabe
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Shota Miwa
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Azusa Sato
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1, Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Osamu Kitagawa
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| |
Collapse
|
12
|
Bao H, Chen Y, Yang X. Catalytic Asymmetric Synthesis of Axially Chiral Diaryl Ethers through Enantioselective Desymmetrization. Angew Chem Int Ed Engl 2023; 62:e202300481. [PMID: 36760025 DOI: 10.1002/anie.202300481] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/07/2023] [Accepted: 02/09/2023] [Indexed: 02/11/2023]
Abstract
Axially chiral diaryl ethers are a type of unique atropisomers bearing two potential axes, which have potential applications in a variety of research fields. However, the catalytic enantioselective synthesis of these diaryl ether atropisomers is largely underexplored when compared to the catalytic asymmetric synthesis of biaryl or other types of atropisomers. Herein, we report a highly efficient catalytic asymmetric synthesis of diaryl ether atropisomers through an organocatalyzed enantioselective desymmetrization protocol. The chiral phosphoric acid-catalyzed asymmetric electrophilic aromatic aminations of the symmetrical 1,3-benzenediamine type substrates afforded a series of diaryl ether atropisomers in excellent yields and enantioselectivities. The facile construction of heterocycles by the utilizations of the 1,2-benzenediamine moiety in the products provided access to a variety of structurally diverse and novel azaarene-containing diaryl ether atropisomers.
Collapse
Affiliation(s)
- Hanyang Bao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Yunrong Chen
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Xiaoyu Yang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| |
Collapse
|
13
|
Smith PJ, Tong Z, Ragus J, Solon P, Shimkin KW, Anderson EA. Rhodium-Catalyzed [2 + 2 + 2] Cyclotrimerizations of Yndiamides with Alkynes. Org Lett 2022; 24:7522-7526. [PMID: 36214595 DOI: 10.1021/acs.orglett.2c02770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Yndiamides offer opportunities for the synthesis of vicinally nitrogen-disubstituted aromatics and azacycles. Here we report the Rh-catalyzed cyclotrimerization of alkynyl yndiamides with alkynes, the regiochemical outcome of which is controlled by the electronic properties of the alkyne partner, enabling the formation of 7-aminoindolines with excellent selectivity (up to >20:1 r.r.). We also report a complementary synthesis of bicyclic 1,2-dianiline derivatives by cyclotrimerization of yndiamides with terminal diynes, where slow addition of the diyne overcomes self-dimerization.
Collapse
Affiliation(s)
- Philip J Smith
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, OxfordOX1 3TA, U.K
| | - Zixuan Tong
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, OxfordOX1 3TA, U.K
| | - Julia Ragus
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, OxfordOX1 3TA, U.K
| | - Pearse Solon
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, OxfordOX1 3TA, U.K
| | - Kirk W Shimkin
- Discovery Chemistry, Therapeutics Discovery, Janssen Research & Development, LLC, Spring House, Pennsylvania19477, United States
| | - Edward A Anderson
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, OxfordOX1 3TA, U.K
| |
Collapse
|
14
|
Han T, Zhang Z, Wang M, Xu L, Mei G. The Rational Design and Atroposelective Synthesis of Axially Chiral C2‐Arylpyrrole‐Derived Amino Alcohols. Angew Chem Int Ed Engl 2022; 61:e202207517. [DOI: 10.1002/anie.202207517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Indexed: 12/15/2022]
Affiliation(s)
- Tian‐Jiao Han
- Green Catalysis Center College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Zheng‐Xu Zhang
- School of Chemistry and Chemical Engineering Shandong University of Technology Zibo 255000 Shandong China
| | - Min‐Can Wang
- Green Catalysis Center College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Li‐Ping Xu
- School of Chemistry and Chemical Engineering Shandong University of Technology Zibo 255000 Shandong China
| | - Guang‐Jian Mei
- Green Catalysis Center College of Chemistry Zhengzhou University Zhengzhou 450001 China
| |
Collapse
|
15
|
Li S, Xu JL, Xu YH. Copper-Catalyzed Enantioselective Hydrosilylation of Allenes to Access Axially Chiral (Cyclohexylidene)ethyl Silanes. Org Lett 2022; 24:6054-6059. [PMID: 35948075 DOI: 10.1021/acs.orglett.2c02359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel strategy of copper-catalyzed regio- and enantioselective hydrosilylation of 4-substituted vinylidenecyclohexanes with silanes was developed. In this protocol, various allenes and silanes were used to afford the corresponding (cyclohexylidene)ethyl silanes in moderate to high yields with good enantioselectivities.
Collapse
Affiliation(s)
- Shu Li
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Jian-Lin Xu
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yun-He Xu
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| |
Collapse
|
16
|
Yang YD, Yang BB, Li L. A nonneglectable stereochemical factor in drug development: Atropisomerism. Chirality 2022; 34:1355-1370. [PMID: 35904531 DOI: 10.1002/chir.23497] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 07/09/2022] [Accepted: 07/11/2022] [Indexed: 11/07/2022]
Abstract
Chirality is one of the key factors affecting the medicinal efficacy of compounds. In addition to central chirality, sterically hindered chiral axes commonly appear in drugs and the resulting chirality is known as atropisomerism. With developments in medicinal chemistry, atropisomerism has attracted increasing attention. This review discusses the classification, biological activity, pharmacokinetics, toxicity and side effects of atropisomers, and can serve as a reference in the research and development of potential chiral drugs.
Collapse
Affiliation(s)
- Ya-Dong Yang
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Bei-Bei Yang
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Li Li
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| |
Collapse
|
17
|
Zeng L, Li J, Cui S. Rhodium‐Catalyzed Atroposelective Click Cycloaddition of Azides and Alkynes. Angew Chem Int Ed Engl 2022; 61:e202205037. [DOI: 10.1002/anie.202205037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Linwei Zeng
- Institute of Drug Discovery and Design College of Pharmaceutical Sciences Zhejiang University 866 Yuhangtang road Hangzhou 310058 China
| | - Jiaming Li
- Institute of Drug Discovery and Design College of Pharmaceutical Sciences Zhejiang University 866 Yuhangtang road Hangzhou 310058 China
| | - Sunliang Cui
- Institute of Drug Discovery and Design College of Pharmaceutical Sciences Zhejiang University 866 Yuhangtang road Hangzhou 310058 China
| |
Collapse
|
18
|
Han TJ, Zhang ZX, Wang MC, Xu LP, Mei GJ. The Rational Design and Atroposelective Synthesis of Axially Chiral C2‐Arylpyrrole‐Derived Amino Alcohols. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Zheng-Xu Zhang
- Shandong University of Technology College of Chemistry CHINA
| | | | - Li-Ping Xu
- Shandong University of Technology College of Chemistry CHINA
| | - Guang-Jian Mei
- Zhengzhou University Chemistry Zhengzhou 450001 450001 Zhengzhou CHINA
| |
Collapse
|
19
|
Zeng L, Li J, Cui S. Rhodium‐Catalyzed Atroposelective Click Cycloaddition of Azides and Alkynes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Linwei Zeng
- Institute of Drug Discovery and Design College of Pharmaceutical Sciences Zhejiang University 866 Yuhangtang road Hangzhou 310058 China
| | - Jiaming Li
- Institute of Drug Discovery and Design College of Pharmaceutical Sciences Zhejiang University 866 Yuhangtang road Hangzhou 310058 China
| | - Sunliang Cui
- Institute of Drug Discovery and Design College of Pharmaceutical Sciences Zhejiang University 866 Yuhangtang road Hangzhou 310058 China
| |
Collapse
|
20
|
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.
Collapse
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
| |
Collapse
|
21
|
Deis T, Maury J, Medici F, Jean M, Forte J, Vanthuyne N, Fensterbank L, Lemière G. Synthesis and Optical Resolution of Configurationally Stable Zwitterionic Pentacoordinate Silicon Derivatives. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113836] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Thomas Deis
- Institut Parisien de Chimie Moléculaire Sorbonne Université, CNRS 4 Place Jussieu, CC 229 F-75252 Paris Cedex 05 France
| | - Julien Maury
- Institut Parisien de Chimie Moléculaire Sorbonne Université, CNRS 4 Place Jussieu, CC 229 F-75252 Paris Cedex 05 France
| | - Fabrizio Medici
- Institut Parisien de Chimie Moléculaire Sorbonne Université, CNRS 4 Place Jussieu, CC 229 F-75252 Paris Cedex 05 France
| | - Marion Jean
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 F-13397 Marseille Cedex 20 France
| | - Jérémy Forte
- Institut Parisien de Chimie Moléculaire Sorbonne Université, CNRS 4 Place Jussieu, CC 229 F-75252 Paris Cedex 05 France
| | - Nicolas Vanthuyne
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 F-13397 Marseille Cedex 20 France
| | - Louis Fensterbank
- Institut Parisien de Chimie Moléculaire Sorbonne Université, CNRS 4 Place Jussieu, CC 229 F-75252 Paris Cedex 05 France
| | - Gilles Lemière
- Institut Parisien de Chimie Moléculaire Sorbonne Université, CNRS 4 Place Jussieu, CC 229 F-75252 Paris Cedex 05 France
| |
Collapse
|
22
|
Song R, Xie Y, Jin Z, Chi YR. Carbene‐Catalyzed Asymmetric Construction of Atropisomers. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108630] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Runjiang Song
- Division of Chemistry & Biological Chemistry School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Yongtao Xie
- International Joint Research Center for Molecular Science College of Chemistry and Environmental Engineering College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
- Division of Chemistry & Biological Chemistry School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - 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 Guiyang 550025 China
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education Guizhou University Guiyang 550025 China
| |
Collapse
|
23
|
Deis T, Maury J, Medici F, Jean M, Forte J, Vanthuyne N, Fensterbank L, Lemière G. Synthesis and Optical Resolution of Configurationally Stable Zwitterionic Pentacoordinate Silicon Derivatives. Angew Chem Int Ed Engl 2021; 61:e202113836. [PMID: 34767686 DOI: 10.1002/anie.202113836] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Indexed: 11/08/2022]
Abstract
Stereogenic silicon centres in functionalised tetracoordinated organosilanes generally exhibit very high configurational stability under neutral conditions. This stability drops completely when higher coordination states of the silicon centre are reached due to rapid substituent exchange. Herein we describe the synthesis of chiral and neutral pentacoordinate silicon derivatives with high configurational stability. The zwitterionic nature of these air- and water-tolerant species allows for the first time their direct and efficient optical resolution using chiral HPLC techniques. By means of this method, pentacoordinate silicon compounds exhibiting high Si-inversion have been obtained as single enantiomers. A rationalisation of the enantiomerisation pathways has been also carried out using DFT calculations.
Collapse
Affiliation(s)
- Thomas Deis
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, F-75252, Paris Cedex 05, France
| | - Julien Maury
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, F-75252, Paris Cedex 05, France
| | - Fabrizio Medici
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, F-75252, Paris Cedex 05, France
| | - Marion Jean
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, F-13397, Marseille Cedex 20, France
| | - Jérémy Forte
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, F-75252, Paris Cedex 05, France
| | - Nicolas Vanthuyne
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, F-13397, Marseille Cedex 20, France
| | - Louis Fensterbank
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, F-75252, Paris Cedex 05, France
| | - Gilles Lemière
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, F-75252, Paris Cedex 05, France
| |
Collapse
|
24
|
Computational Insight into the Rope-Skipping Isomerization of Diarylether Cyclophanes. Symmetry (Basel) 2021. [DOI: 10.3390/sym13112127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The restricted rotation of chemical bonds may lead to the formation of stable, conformationally chiral molecules. While the asymmetry in chiral molecules is generally observed in the presence of one or more stereocenters, asymmetry exhibited by conformational chirality in compounds lacking stereocenters, called atropisomerism, depends on structural and temperature factors that are still not fully understood. This atropisomerism is observed in natural diarylether heptanoids where the length of the intramolecular tether constrains the compounds to isolable enantiomers at room temperature. In this work, we examine the impact tether length has on the activation free energies to isomerization of a diarylether cyclophane substructure with a tether ranging from 6 to 14 carbons. Racemization activation energies are observed to decay from 48 kcal/mol for a 7-carbon tether to 9.2 kcal/mol for a 14-carbon tether. Synthetic efforts to experimentally test these constraints are also presented. This work will likely guide the design and synthesis of novel asymmetric cyclophanes that will be of interest in the catalysis community given the importance of atropisomeric ligands in the field of asymmetric catalysis.
Collapse
|
25
|
Stroia I, Moraru IT, Miclăuş M, Grosu I, Lar C, Grosu IG, Terec A. Solid-State and Theoretical Investigations of Some Banister-Type Macrocycles with 2,2'-Aldoxime-1,1'-Biphenyl Units. Front Chem 2021; 9:750418. [PMID: 34692645 PMCID: PMC8527037 DOI: 10.3389/fchem.2021.750418] [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: 07/30/2021] [Accepted: 09/20/2021] [Indexed: 11/17/2022] Open
Abstract
In the context of helical chirality, bridging of biphenyl units leads to banister-type compounds and the stability of the resulted atropisomers may increase dramatically if suitable changes are performed in the linker unit that coils around the biphenyl moiety. A rigorous density functional theory (DFT) study was conducted for macrocycles containing rigid oxime ether segments connected to the biphenyl backbone in order to determine how the rotation barriers are influenced by the presence of either a flexible oligoethyleneoxide or a more rigid m–xylylene component in the macrocycle. The calculated values for the racemization barrier were in good agreement with those obtained experimentally and confirm the benefit of introducing a more rigid unit in the macrocycle on the stability of atropisomers. Solid-state data were obtained and computed data were used to assess the contribution brought by supramolecular associations observed in the lattice to the stabilization of the crystal structure. Beside introducing rigidity in the linker, complexation of flexible macrocycles with alkali metal ions is also contributing to the stability of atropisomers, leading to values for the racemization barrier matching that of the rigid macrocycle. Using diethylammonium cation as guest for the macrocycle, a spectacular increase in the barrier to rotation was observed for the resulted pseudo[2]rotaxane.
Collapse
Affiliation(s)
- Ioan Stroia
- Department of Chemistry and SOOMCC, Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Ionuţ-Tudor Moraru
- Faculty of Chemistry and Chemical Engineering, Metalomica Research Centre, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Maria Miclăuş
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - Ion Grosu
- Department of Chemistry and SOOMCC, Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Claudia Lar
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - Ioana Georgeta Grosu
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - Anamaria Terec
- Department of Chemistry and SOOMCC, Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Cluj-Napoca, Romania
| |
Collapse
|
26
|
Kamble GT, Salem MSH, Abe T, Park H, Sako M, Takizawa S, Sasai H. Chiral Vanadium(V)-catalyzed Oxidative Coupling of 4-Hydroxycarbazoles. CHEM LETT 2021. [DOI: 10.1246/cl.210367] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ganesh T. Kamble
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Mohamed S. H. Salem
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Mihogaoka, Ibaraki, Osaka 567-0047, Japan
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
| | - Tsukasa Abe
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Hanseok Park
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Makoto Sako
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Shinobu Takizawa
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Hiroaki Sasai
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| |
Collapse
|
27
|
Abstract
Biological systems have often served as inspiration for the design of synthetic catalysts. The lock and key analogy put forward by Emil Fischer in 1894 to explain the high substrate specificity of enzymes has been used as a general guiding principle aimed at enhancing the selectivity of chemical processes by optimizing attractive and repulsive interactions in molecular recognition events. However, although a perfect fit of a substrate to a catalytic site may enhance the selectivity of a specific catalytic reaction, it inevitably leads to a narrow substrate scope, excluding substrates with different sizes and shapes from efficient binding. An ideal catalyst should instead be able to accommodate a wide range of substrates-it has indeed been recognized that enzymes also are often highly promiscuous as a result of their ability to change their conformation and shape in response to a substrate-and preferentially be useful in various types of processes. In biological adaptation, the process by which species become fitted to new environments is crucial for their ability to cope with changing environmental conditions. With this in mind, we have been exploring catalytic systems that can adapt their size and shape to the environment with the goal of developing synthetic catalysts with wide scope.In this Account, we describe our studies aimed at elucidating how metal catalysts with flexible structural units adapt their binding pockets to the reacting substrate. Throughout our studies, ligands equipped with tropos biaryl units have been explored, and the palladium-catalyzed allylic alkylation reaction has been used as a suitable probe to study the adaptability of the catalytic systems. The conformations of catalytically active metal complexes under different conditions have been studied by both experimental and theoretical methods. By the design of ligands incorporating two flexible units, the symmetry properties of metal complexes could be used to facilitate conformational analysis and thereby provide valuable insight into the structures of complexes involved in the catalytic cycle. The importance of flexibility was convincingly demonstrated when a phosphine group in a privileged ligand that is well-known for its versatility in a number of processes was exchanged for a tropos biaryl phosphite unit: the result was a truly self-adaptive ligand with dramatically increased scope.
Collapse
Affiliation(s)
- Montserrat Diéguez
- Departament
de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel·lí Domingo 1, 43007 Tarragona, Spain
| | - Oscar Pàmies
- Departament
de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel·lí Domingo 1, 43007 Tarragona, Spain
| | - Christina Moberg
- Organic
Chemistry, Department of Chemistry, KTH
Royal Institute of Technology, SE 10044 Stockholm, Sweden
| |
Collapse
|
28
|
Song R, Xie Y, Jin Z, Chi YR. Carbene-Catalyzed Asymmetric Construction of Atropisomers. Angew Chem Int Ed Engl 2021; 60:26026-26037. [PMID: 34270158 DOI: 10.1002/anie.202108630] [Citation(s) in RCA: 89] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Indexed: 11/05/2022]
Abstract
Atropisomeric molecules have found proven applications and have shown promising potential in chemistry and medicine. The design of N-heterocyclic carbene (NHC) catalyzed reactions to construct atropisomerically enriched molecules has emerged as an important research topic in recent years. These reactions include kinetic resolutions, asymmetric desymmetrizations, central-to-axial chirality conversions, and cycloadditions. This Minireview evaluates and summarizes the progress in NHC-based organic catalysis for access to atropisomers, and briefly states our personal perspectives on the future advancement of this topic. NHC catalysis has provided rich and unique reaction modes that have led to success in the asymmetric synthesis of central-chiral molecules. It is expected that similar success could also be achieved in developing NHC catalysis to prepare atropisomeric molecules, including those not easily accessible by other methods.
Collapse
Affiliation(s)
- Runjiang Song
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Yongtao Xie
- International Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China.,Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - 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, Guiyang, 550025, China
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.,State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, China
| |
Collapse
|
29
|
Kolarovič A, Jakubec P. State of the Art in Crystallization‐Induced Diastereomer Transformations. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100473] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Andrej Kolarovič
- Department of Chemistry Faculty of Education Trnava University Priemyselná 4 918 43 Trnava Slovakia
| | - Pavol Jakubec
- Institute of Organic Chemistry Catalysis and Petrochemistry Slovak University of Technology Radlinského 9 812 37 Bratislava Slovakia
| |
Collapse
|
30
|
Guo Y, Liu M, Zhu X, Zhu L, He C. Catalytic Asymmetric Synthesis of Silicon‐Stereogenic Dihydrodibenzosilines: Silicon Central‐to‐Axial Chirality Relay. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103748] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yonghong Guo
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Meng‐Meng Liu
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Xujiang Zhu
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Liru Zhu
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Chuan He
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen Guangdong 518055 China
| |
Collapse
|
31
|
Guo Y, Liu MM, Zhu X, Zhu L, He C. Catalytic Asymmetric Synthesis of Silicon-Stereogenic Dihydrodibenzosilines: Silicon Central-to-Axial Chirality Relay. Angew Chem Int Ed Engl 2021; 60:13887-13891. [PMID: 33830619 DOI: 10.1002/anie.202103748] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/06/2021] [Indexed: 12/17/2022]
Abstract
A Rh-catalyzed asymmetric synthesis of silicon-stereogenic dihydrodibenzosilines featuring axially chiral 6-membered bridged biaryls is demonstrated. In the presence of a RhI catalyst with a chiral diphosphine ligand, a wide range of dihydrodibenzosilines containing both silicon-central and axial chiralities are conveniently constructed in excellent enantioselectivities via dehydrogenative C(sp3 )-H silylation. Absolute configuration analysis by single-crystal X-ray structures revealed a novel silicon central-to-axial chirality relay phenomenon, which we believe will inspire further research in the field of asymmetric catalysis and chiroptical materials.
Collapse
Affiliation(s)
- Yonghong Guo
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Meng-Meng Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Xujiang Zhu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Liru Zhu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Chuan He
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| |
Collapse
|
32
|
Ojha M, Anitha M, Bansal RK. Reinvestigation of tandem dimerization and 1,3-alkyl shift in 3-benzylbenzothiazolylidene carbene: Experimental and theoretical results. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
33
|
Zhao Y, Ku CF, Xu XY, Tsang NY, Zhu Y, Zhao CL, Liu KL, Li CC, Rong L, Zhang HJ. Stable Axially Chiral Isomers of Arylnaphthalene Lignan Glycosides with Antiviral Potential Discovered from Justicia procumbens. J Org Chem 2021; 86:5568-5583. [PMID: 33818100 DOI: 10.1021/acs.joc.1c00068] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Arylnaphthalene lignans (ANLs) were known to have axial chirality due to the biphenyl skeleton with hindered rotation at the single bond. However, the stable ANL atropisomers have not been isolated from nature until the present study. Phytochemical separation of the methanol extract of the stems and barks of Justicia procumbens led to the isolation of 11 ANL glycosides including four pairs of new atropisomers with stable confirmations at room temperature. Their structures were deduced from elucidation of the extensive spectral data, and their absolute configurations were determined by the circular dichroism, electronic circular dichroism, and X-ray methods as well as the total synthesis of one pair of the atropisomers. The ANL compounds were evaluated for their antiviral potential, and it was found that they displayed great antiviral activity discrepancy between a pair of atropisomers due to the geometric orientation. The 1'P-oriented atropisomers showed much more significant antiviral potency than their corresponding 1'M-oriented counterparts. The biological activity discrepancy caused by the axial chirality will not only inspire synthetic design of novel ANL atropisomers to enrich the structural diversity, but also provide important hints to direct the synthetic approaches toward the antiviral drug development of ANL compounds.
Collapse
Affiliation(s)
- Yang Zhao
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR People's Republic of China
| | - Chuen-Fai Ku
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR People's Republic of China
| | - Xin-Ya Xu
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR People's Republic of China
| | - Nga-Yi Tsang
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR People's Republic of China
| | - Yu Zhu
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR People's Republic of China
| | - Chen-Liang Zhao
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR People's Republic of China
| | - Kang-Lun Liu
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR People's Republic of China
| | - Chuang-Chuang Li
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, People's Republic of China
| | - Lijun Rong
- Department of Microbiology and Immunology, College of Medicine, University of Illinois at Chicago, 835 South Wolcott Avenue, Chicago, Illinois 60612, United States
| | - Hong-Jie Zhang
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR People's Republic of China
| |
Collapse
|
34
|
Bao X, Rodriguez J, Bonne D. Enantioselective Synthesis of Atropisomers with Multiple Stereogenic Axes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002518] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Xiaoze Bao
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou 310014 China
| | - Jean Rodriguez
- Aix Marseille Université CNRS Centrale Marseille, iSm2 Marseille France
| | - Damien Bonne
- Aix Marseille Université CNRS Centrale Marseille, iSm2 Marseille France
| |
Collapse
|
35
|
Bao X, Rodriguez J, Bonne D. Enantioselective Synthesis of Atropisomers with Multiple Stereogenic Axes. Angew Chem Int Ed Engl 2020; 59:12623-12634. [DOI: 10.1002/anie.202002518] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Indexed: 12/23/2022]
Affiliation(s)
- Xiaoze Bao
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou 310014 China
| | - Jean Rodriguez
- Aix Marseille Université CNRS Centrale Marseille, iSm2 Marseille France
| | - Damien Bonne
- Aix Marseille Université CNRS Centrale Marseille, iSm2 Marseille France
| |
Collapse
|
36
|
Tsyrenova B, Nenajdenko V. Synthesis and Spectral Study of a New Family of 2,5-Diaryltriazoles Having Restricted Rotation of the 5-Aryl Substituent. Molecules 2020; 25:E480. [PMID: 31979299 PMCID: PMC7037111 DOI: 10.3390/molecules25030480] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 01/14/2020] [Accepted: 01/22/2020] [Indexed: 01/28/2023] Open
Abstract
Efficient synthesis of 2,5-diaryl substituted 4-azido-1,2,3-triazoles by the reaction of sodium azide with dichlorosubstituted diazadienes was demonstrated. The optical properties of the prepared azidotriazoles were studied to reveal a luminescence maximum in the 360-420 nm region. To improve the luminescence quantum yields a family of 4-azido-1,2,3-triazoles bearing ortho-propargyloxy substituents in the 5 position was prepared. Subsequent intramolecular thermal cyclization permits to construct additional triazole fragment and obtain unique benzoxazocine derivatives condensed with two triazole rings. This new family of condensed heterocycles has a flattened heterocyclic system structure to provide more conjugation of the 5-aryl fragment with the triazole core. As a result, a new type of UV/"blue light-emitting" materials with better photophysical properties was obtained.
Collapse
Affiliation(s)
| | - Valentine Nenajdenko
- Department of Chemistry, Lomonosov Moscow State University, 119899 Moscow, Russia;
| |
Collapse
|
37
|
Flack T, Romain C, White AJP, Haycock PR, Barnard A. Design, Synthesis, and Conformational Analysis of Oligobenzanilides as Multifacial α-Helix Mimetics. Org Lett 2019; 21:4433-4438. [PMID: 31188616 PMCID: PMC6593395 DOI: 10.1021/acs.orglett.9b01115] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Indexed: 01/19/2023]
Abstract
The design, synthesis, and conformational analysis of an oligobenzanilide helix mimetic scaffold capable of simultaneous mimicry of two faces of an α-helix is reported. The synthetic methodology provides access to diverse monomer building blocks amenable to solid-phase assembly in just four synthetic steps. The conformational flexibility of model dimers was investigated using a combination of solid and solution state methodologies supplemented with DFT calculations. The lack of noncovalent constraints allows for significant conformational plasticity in the scaffold, thus permitting it to successfully mimic residues i, i+2, i+4, i+6, i+7, and i+9 of a canonical α-helix.
Collapse
Affiliation(s)
- Theo Flack
- Department of Chemistry,
Molecular Sciences Research Hub, Imperial
College London, London W12 0BZ, U.K.
| | - Charles Romain
- Department of Chemistry,
Molecular Sciences Research Hub, Imperial
College London, London W12 0BZ, U.K.
| | - Andrew J. P. White
- Department of Chemistry,
Molecular Sciences Research Hub, Imperial
College London, London W12 0BZ, U.K.
| | - Peter R. Haycock
- Department of Chemistry,
Molecular Sciences Research Hub, Imperial
College London, London W12 0BZ, U.K.
| | - Anna Barnard
- Department of Chemistry,
Molecular Sciences Research Hub, Imperial
College London, London W12 0BZ, U.K.
| |
Collapse
|
38
|
Li Z, Zhang H, Yu S. NaClO-Promoted Atroposelective Couplings of 3-Substituted Indoles with Amino Acid Derivatives. Org Lett 2019; 21:4754-4758. [DOI: 10.1021/acs.orglett.9b01638] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhaojie Li
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Hao Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Shouyun Yu
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| |
Collapse
|
39
|
Fugard AJ, Lahdenperä ASK, Tan JSJ, Mekareeya A, Paton RS, Smith MD. Hydrogen-Bond-Enabled Dynamic Kinetic Resolution of Axially Chiral Amides Mediated by a Chiral Counterion. Angew Chem Int Ed Engl 2019; 58:2795-2798. [PMID: 30644159 PMCID: PMC6492105 DOI: 10.1002/anie.201814362] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Indexed: 11/06/2022]
Abstract
Non-biaryl atropisomers are valuable in medicine, materials, and catalysis, but their enantioselective synthesis remains a challenge. Herein, a counterion-mediated O-alkylation method for the generation of atropisomeric amides with an er up to 99:1 is outlined. This dynamic kinetic resolution is enabled by the observation that the rate of racemization of atropisomeric naphthamides is significantly increased by the presence of an intramolecular O-H⋅⋅⋅NCO hydrogen bond. Upon O-alkylation of the H-bond donor, the barrier to rotation is significantly increased. Quantum calculations demonstrate that the intramolecular H-bond reduces the rotational barrier about the aryl-amide bond, stabilizing the planar transition state for racemization by approximately 40 kJ mol-1 , thereby facilitating the observed dynamic kinetic resolution.
Collapse
Affiliation(s)
- Alison J. Fugard
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | | | - Jaqueline S. J. Tan
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Aroonroj Mekareeya
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Robert S. Paton
- Department of ChemistryColorado State UniversityFort CollinsCO80523USA
| | - Martin D. Smith
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| |
Collapse
|
40
|
Fugard AJ, Lahdenperä ASK, Tan JSJ, Mekareeya A, Paton RS, Smith MD. Hydrogen‐Bond‐Enabled Dynamic Kinetic Resolution of Axially Chiral Amides Mediated by a Chiral Counterion. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814362] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Alison J. Fugard
- Chemistry Research LaboratoryUniversity of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | | | - Jaqueline S. J. Tan
- Chemistry Research LaboratoryUniversity of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Aroonroj Mekareeya
- Chemistry Research LaboratoryUniversity of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Robert S. Paton
- Department of ChemistryColorado State University Fort Collins CO 80523 USA
| | - Martin D. Smith
- Chemistry Research LaboratoryUniversity of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| |
Collapse
|
41
|
Atropselective Dibrominations of a 1,1′‐Disubstituted 2,2′‐Biindolyl with Diverging Point‐to‐Axial Asymmetric Inductions. Deriving 2,2′‐Biindolyl‐3,3′‐diphosphane Ligands for Asymmetric Catalysis. Angew Chem Int Ed Engl 2019; 58:4714-4719. [DOI: 10.1002/anie.201806294] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 01/02/2019] [Indexed: 01/26/2023]
|
42
|
Baumann T, Brückner R. Atropselektive Dibromierungen eines 1,1′‐disubstituierten 2,2′‐Biindolyls mit divergierender zentral‐zu‐axialer asymmetrischer Induktion. Ableitung von 2,2′‐Biindolyl‐3,3′‐diphosphan‐Liganden für asymmetrische Katalysen. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201806294] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Thomas Baumann
- Institut für Organische Chemie Albert-Ludwigs-Universität Freiburg Albertstraße 21 79104 Freiburg Deutschland
| | - Reinhard Brückner
- Institut für Organische Chemie Albert-Ludwigs-Universität Freiburg Albertstraße 21 79104 Freiburg Deutschland
| |
Collapse
|
43
|
Pizzolato S, Štacko P, Kistemaker JCM, van Leeuwen T, Otten E, Feringa BL. Central-to-Helical-to-Axial-to-Central Transfer of Chirality with a Photoresponsive Catalyst. J Am Chem Soc 2018; 140:17278-17289. [PMID: 30458108 PMCID: PMC6326533 DOI: 10.1021/jacs.8b10816] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Indexed: 12/26/2022]
Abstract
Recent advances in molecular design have displayed striking examples of dynamic chirality transfer between various elements of chirality, e.g., from central to either helical or axial chirality and vice versa. While considerable progress in atroposelective synthesis has been made, it is intriguing to design chiral molecular switches able to provide selective and dynamic control of axial chirality with an external stimulus to modulate stereochemical functions. Here, we report the synthesis and characterization of a photoresponsive bis(2-phenol)-substituted molecular switch 1. The unique design exhibits a dynamic hybrid central-helical-axial transfer of chirality. The change of preferential axial chirality in the biaryl motif is coupled to the reversible switching of helicity of the overcrowded alkene core, dictated by the fixed stereogenic center. The potential for dynamic control of axial chirality was demonstrated by using ( R)-1 as switchable catalyst to direct the stereochemical outcome of the catalytic enantioselective addition of diethylzinc to aromatic aldehydes, with successful reversal of enantioselectivity for several substrates.
Collapse
Affiliation(s)
- Stefano
F. Pizzolato
- Center for Systems Chemistry, Stratingh
Institute for Chemistry and Zernike Institute for Advanced Materials,
Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Peter Štacko
- Center for Systems Chemistry, Stratingh
Institute for Chemistry and Zernike Institute for Advanced Materials,
Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Jos C. M. Kistemaker
- Center for Systems Chemistry, Stratingh
Institute for Chemistry and Zernike Institute for Advanced Materials,
Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Thomas van Leeuwen
- Center for Systems Chemistry, Stratingh
Institute for Chemistry and Zernike Institute for Advanced Materials,
Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Edwin Otten
- Center for Systems Chemistry, Stratingh
Institute for Chemistry and Zernike Institute for Advanced Materials,
Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Ben L. Feringa
- Center for Systems Chemistry, Stratingh
Institute for Chemistry and Zernike Institute for Advanced Materials,
Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| |
Collapse
|
44
|
Schettini R, Costabile C, Della Sala G, Iuliano V, Tedesco C, Izzo I, De Riccardis F. Cation-Induced Molecular Switching Based on Reversible Modulation of Peptoid Conformational States. J Org Chem 2018; 83:12648-12663. [DOI: 10.1021/acs.joc.8b01990] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Rosaria Schettini
- Department of Chemistry and Biology “A. Zambelli”, University of Salerno, Via Giovanni Paolo II, 132, Fisciano, Salerno 84084, Italy
| | - Chiara Costabile
- Department of Chemistry and Biology “A. Zambelli”, University of Salerno, Via Giovanni Paolo II, 132, Fisciano, Salerno 84084, Italy
| | - Giorgio Della Sala
- Department of Chemistry and Biology “A. Zambelli”, University of Salerno, Via Giovanni Paolo II, 132, Fisciano, Salerno 84084, Italy
| | - Veronica Iuliano
- Department of Chemistry and Biology “A. Zambelli”, University of Salerno, Via Giovanni Paolo II, 132, Fisciano, Salerno 84084, Italy
| | - Consiglia Tedesco
- Department of Chemistry and Biology “A. Zambelli”, University of Salerno, Via Giovanni Paolo II, 132, Fisciano, Salerno 84084, Italy
| | - Irene Izzo
- Department of Chemistry and Biology “A. Zambelli”, University of Salerno, Via Giovanni Paolo II, 132, Fisciano, Salerno 84084, Italy
| | - Francesco De Riccardis
- Department of Chemistry and Biology “A. Zambelli”, University of Salerno, Via Giovanni Paolo II, 132, Fisciano, Salerno 84084, Italy
| |
Collapse
|
45
|
Bamberger SN, Malik CK, Voehler MW, Brown SK, Pan H, Johnson-Salyard TL, Rizzo CJ, Stone MP. Configurational and Conformational Equilibria of N 6-(2-Deoxy-d-erythro-pentofuranosyl)-2,6-diamino-3,4-dihydro-4-oxo-5- N-methylformamidopyrimidine (MeFapy-dG) Lesion in DNA. Chem Res Toxicol 2018; 31:924-935. [PMID: 30169026 DOI: 10.1021/acs.chemrestox.8b00135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The most common lesion in DNA occurring due to clinical treatment with Temozolomide or cellular exposures to other methylating agents is 7-methylguanine (N7-Me-dG). It can undergo a secondary reaction to form N6-(2-deoxy-d-erythro-pentofuranosyl)-2,6-diamino-3,4-dihydro-4-oxo-5- N-methylformamidopyrimidine (MeFapy-dG). MeFapy-dG undergoes epimerization in DNA to produce either α or β deoxyribose anomers. Additionally, conformational rotation around the formyl bond, C5- N5 bond, and glycosidic bond may occur. To characterize and quantitate the mixture of these isomers in DNA, a 13C-MeFapy-dG lesion, in which the CH3 group of the MeFapy-dG was isotopically labeled, was incorporated into the trimer 5'-TXT-3' and the dodecamer 5'-CATXATGACGCT-3' (X = 13C-MeFapy-dG). NMR spectroscopy of both the trimer and dodecamer revealed that the MeFapy-dG lesion exists in single strand DNA as ten configurationally and conformationally discrete species, eight of which may be unequivocally assigned. In the duplex dodecamer, the MeFapy-dG lesion exists as six configurationally and conformationally discrete species. Analyses of NMR data in the single strand trimer confirm that for each deoxyribose anomer, atropisomerism occurs around the C5- N5 bond to produce R a and S a atropisomers. Each atropisomer exhibits geometrical isomerism about the formyl bond yielding E and Z conformations. 1H NMR experiments allow the relative abundances of the species to be determined. For the single strand trimer, the α and β anomers exist in a 3:7 ratio, favoring the β anomer. For the β anomer, with respect to the C5- N5 bond, the R a and S a atropisomers are equally populated. However, the Z geometrical isomer of the formyl moiety is preferred. For the α anomer, the E- S a isomer is present at 12%, whereas all other isomers are present at 5-7%. DNA processing enzymes may differentially recognize different isomers of the MeFapy-dG lesion. Moreover, DNA sequence-specific differences in the populations of configurational and conformational species may modulate biological responses to the MeFapy-dG lesion.
Collapse
Affiliation(s)
- Stephanie N Bamberger
- Department of Chemistry , Vanderbilt University Center for Structural Biology, Vanderbilt Center in Molecular Toxicology, and the Vanderbilt-Ingram Cancer Center, Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Chanchal K Malik
- Department of Chemistry , Vanderbilt University Center for Structural Biology, Vanderbilt Center in Molecular Toxicology, and the Vanderbilt-Ingram Cancer Center, Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Markus W Voehler
- Department of Chemistry , Vanderbilt University Center for Structural Biology, Vanderbilt Center in Molecular Toxicology, and the Vanderbilt-Ingram Cancer Center, Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Summer K Brown
- Department of Chemistry , Vanderbilt University Center for Structural Biology, Vanderbilt Center in Molecular Toxicology, and the Vanderbilt-Ingram Cancer Center, Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Hope Pan
- Department of Chemistry , Vanderbilt University Center for Structural Biology, Vanderbilt Center in Molecular Toxicology, and the Vanderbilt-Ingram Cancer Center, Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Tracy L Johnson-Salyard
- Department of Chemistry , Vanderbilt University Center for Structural Biology, Vanderbilt Center in Molecular Toxicology, and the Vanderbilt-Ingram Cancer Center, Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Carmelo J Rizzo
- Department of Chemistry , Vanderbilt University Center for Structural Biology, Vanderbilt Center in Molecular Toxicology, and the Vanderbilt-Ingram Cancer Center, Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Michael P Stone
- Department of Chemistry , Vanderbilt University Center for Structural Biology, Vanderbilt Center in Molecular Toxicology, and the Vanderbilt-Ingram Cancer Center, Vanderbilt University , Nashville , Tennessee 37235 , United States
| |
Collapse
|
46
|
Wang Y, Allemann O, Balaban TS, Vanthuyne N, Linden A, Baldridge KK, Siegel JS. Chiral Atropisomeric Indenocorannulene Bowls: Critique of the Cahn–Ingold–Prelog Conception of Molecular Chirality. Angew Chem Int Ed Engl 2018; 57:6470-6474. [DOI: 10.1002/anie.201801325] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Yujia Wang
- Health Sciences PlatformTianjin University 92 Weijin Road, Nankai District Tianjin- 300072 China
| | - Oliver Allemann
- Health Sciences PlatformTianjin University 92 Weijin Road, Nankai District Tianjin- 300072 China
| | - T. Silviu Balaban
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseilles France
| | - Nicolas Vanthuyne
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseilles France
| | - Anthony Linden
- Dept. of ChemistryUniversity of Zurich Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Kim K. Baldridge
- Health Sciences PlatformTianjin University 92 Weijin Road, Nankai District Tianjin- 300072 China
| | - Jay S. Siegel
- Health Sciences PlatformTianjin University 92 Weijin Road, Nankai District Tianjin- 300072 China
| |
Collapse
|
47
|
Wang Y, Allemann O, Balaban TS, Vanthuyne N, Linden A, Baldridge KK, Siegel JS. Chiral Atropisomeric Indenocorannulene Bowls: Critique of the Cahn–Ingold–Prelog Conception of Molecular Chirality. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801325] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Yujia Wang
- Health Sciences PlatformTianjin University 92 Weijin Road, Nankai District Tianjin- 300072 China
| | - Oliver Allemann
- Health Sciences PlatformTianjin University 92 Weijin Road, Nankai District Tianjin- 300072 China
| | - T. Silviu Balaban
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseilles France
| | - Nicolas Vanthuyne
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseilles France
| | - Anthony Linden
- Dept. of ChemistryUniversity of Zurich Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Kim K. Baldridge
- Health Sciences PlatformTianjin University 92 Weijin Road, Nankai District Tianjin- 300072 China
| | - Jay S. Siegel
- Health Sciences PlatformTianjin University 92 Weijin Road, Nankai District Tianjin- 300072 China
| |
Collapse
|
48
|
Solmaz U, Gumus I, Binzet G, Celik O, Balci GK, Dogen A, Arslan H. Synthesis, characterization, crystal structure, and antimicrobial studies of novel thiourea derivative ligands and their platinum complexes. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1427233] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Ummuhan Solmaz
- Faculty of Arts and Science, Department of Chemistry, Mersin University, Mersin, Turkey
| | - Ilkay Gumus
- Faculty of Arts and Science, Department of Chemistry, Mersin University, Mersin, Turkey
| | - Gun Binzet
- Faculty of Education, Department of Chemistry, Mersin University, Mersin, Turkey
| | - Omer Celik
- Science and Technology Applied and Research Center, Dicle University, Diyarbakır, Turkey
| | - Gulten Kavak Balci
- Science and Technology Applied and Research Center, Dicle University, Diyarbakır, Turkey
| | - Aylin Dogen
- Faculty of Pharmacy, Department of Pharmaceutical Microbiology, Mersin University, Mersin, Turkey
| | - Hakan Arslan
- Faculty of Arts and Science, Department of Chemistry, Mersin University, Mersin, Turkey
| |
Collapse
|
49
|
D'Amato A, Pierri G, Costabile C, Della Sala G, Tedesco C, Izzo I, De Riccardis F. Cyclic Peptoids as Topological Templates: Synthesis via Central to Conformational Chirality Induction. Org Lett 2018; 20:640-643. [PMID: 29341622 DOI: 10.1021/acs.orglett.7b03786] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Chiral induction was utilized for the synthesis of diastereopure cyclic peptoids containing an N-benzyl alanine residue. Molecular modeling, NMR spectroscopy, single-crystal X-ray diffraction studies, and HPLC with chiral stationary phase demonstrated easy formation of free and sodium/benzylammonium complexed cyclic oligomers through strategic incorporation of a single stereogenic center in the oligomeric backbone. The synthesis of cyclic peptoids with defined conformational chirality and appropriate side chain topology is now possible.
Collapse
Affiliation(s)
- Assunta D'Amato
- Department of Chemistry and Biology "A. Zambelli", University of Salerno , Via Giovanni Paolo II, 132, Fisciano (SA), 84084, Italy
| | - Giovanni Pierri
- Department of Chemistry and Biology "A. Zambelli", University of Salerno , Via Giovanni Paolo II, 132, Fisciano (SA), 84084, Italy
| | - Chiara Costabile
- Department of Chemistry and Biology "A. Zambelli", University of Salerno , Via Giovanni Paolo II, 132, Fisciano (SA), 84084, Italy
| | - Giorgio Della Sala
- Department of Chemistry and Biology "A. Zambelli", University of Salerno , Via Giovanni Paolo II, 132, Fisciano (SA), 84084, Italy
| | - Consiglia Tedesco
- Department of Chemistry and Biology "A. Zambelli", University of Salerno , Via Giovanni Paolo II, 132, Fisciano (SA), 84084, Italy
| | - Irene Izzo
- Department of Chemistry and Biology "A. Zambelli", University of Salerno , Via Giovanni Paolo II, 132, Fisciano (SA), 84084, Italy
| | - Francesco De Riccardis
- Department of Chemistry and Biology "A. Zambelli", University of Salerno , Via Giovanni Paolo II, 132, Fisciano (SA), 84084, Italy
| |
Collapse
|
50
|
Glunz PW. Recent encounters with atropisomerism in drug discovery. Bioorg Med Chem Lett 2018; 28:53-60. [DOI: 10.1016/j.bmcl.2017.11.050] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 11/29/2017] [Accepted: 11/30/2017] [Indexed: 02/07/2023]
|