1
|
Wang Y, Huang Y, Bao X, Wei X, Wei S, Qu J, Wang B. Organocatalytic diastereo- and atropo-selective construction of eight-membered bridged (hetero)biaryls via asymmetric intramolecular [3 + 2] cycloaddition. Chem Sci 2024; 15:8880-8887. [PMID: 38873056 PMCID: PMC11168085 DOI: 10.1039/d4sc01892c] [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: 03/21/2024] [Accepted: 05/07/2024] [Indexed: 06/15/2024] Open
Abstract
An unprecedented and straightforward route for the asymmetric construction of privileged atroposelective bridged (hetero)biaryl eight-membered scaffolds has been accomplished through chiral phosphoric acid catalyzed asymmetric intramolecular [3 + 2] cycloaddition of innovative (hetero)biaryl aldehydes with 3-aminooxindole hydrochlorides. A class of eight-membered bridged (hetero)biaryl lactones fused to spiro[pyrrolidine-oxindole] derivatives, possessing both chiral C-C/C-N axes and multiple contiguous stereocenters, were obtained in good yields with excellent enantioselectivities and diastereoselectivities in one step through this direct strategy. In addition, the good scalability and derivatization of the title compounds demonstrated their synthetic utility.
Collapse
Affiliation(s)
- Yue Wang
- Department of Pharmaceutical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology Dalian 116024 P. R. China
| | - Yue Huang
- Department of Pharmaceutical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology Dalian 116024 P. R. China
| | - Xiaoze Bao
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Xingfu Wei
- Department of Pharmaceutical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology Dalian 116024 P. R. China
| | - Shiqiang Wei
- Department of Pharmaceutical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology Dalian 116024 P. R. China
| | - Jingping Qu
- Department of Pharmaceutical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology Dalian 116024 P. R. China
| | - Baomin Wang
- Department of Pharmaceutical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology Dalian 116024 P. R. China
| |
Collapse
|
2
|
Rodríguez-Salamanca P, Martín-de la Calle R, Rodríguez V, Merino P, Fernández R, Lassaletta JM, Hornillos V. Asymmetric synthesis of dibenzo[ b, d]azepines by Cu-catalyzed reductive or borylative cyclization. Chem Sci 2021; 12:15291-15297. [PMID: 34976349 PMCID: PMC8635211 DOI: 10.1039/d1sc04980a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 11/08/2021] [Indexed: 11/21/2022] Open
Abstract
A copper-catalyzed asymmetric intramolecular reductive cyclization for the synthesis of dibenzo[b,d]azepines is described. Use of 2'-vinyl-biaryl-2-imines as substrates and in situ formed [CuI/(Ph-BPE)] as the catalyst enables the synthesis of 7-membered bridged biarylamines containing both central and axial stereogenic elements in high yields (up to 98%) and with excellent diastereo- and enantioselectivities (>20 : 1 d.r., up to 99% ee). Moreover, the same catalyst was found to facilitate a related borylative cyclization to afford versatile boronic ester derivatives. Both reactions proceed under mild conditions (rt) and are applicable to a variety of substituted aromatic and heterocyclic derivatives.
Collapse
Affiliation(s)
| | | | - Verónica Rodríguez
- Departamento de Química Orgánica, Universidad de Sevilla C/Prof. García González, 1 41012 Sevilla Spain
| | - Pedro Merino
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza 50009 Zaragoza Spain
| | - Rosario Fernández
- Departamento de Química Orgánica, Universidad de Sevilla C/Prof. García González, 1 41012 Sevilla Spain
| | - José M Lassaletta
- Instituto Investigaciones Químicas (CSIC-US) C/Américo Vespucio, 49 41092 Sevilla Spain
| | - Valentín Hornillos
- Instituto Investigaciones Químicas (CSIC-US) C/Américo Vespucio, 49 41092 Sevilla Spain .,Departamento de Química Orgánica, Universidad de Sevilla C/Prof. García González, 1 41012 Sevilla Spain
| |
Collapse
|
3
|
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
|
4
|
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: 70] [Impact Index Per Article: 23.3] [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
|
5
|
Zhang Y, Liu YQ, Hu L, Zhang X, Yin Q. Asymmetric Reductive Amination/Ring-Closing Cascade: Direct Synthesis of Enantioenriched Biaryl-Bridged NH Lactams. Org Lett 2020; 22:6479-6483. [PMID: 32806148 DOI: 10.1021/acs.orglett.0c02282] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report here a Ru-catalyzed enantioselective synthesis of biaryl-bridged NH lactams through asymmetric reductive amination and a spontaneous ring-closing cascade from keto esters and NH4OAc with H2 as reductant. The reaction features broad substrate generality and high enantioselectivities (up to >99% ee). To showcase the practical utility, a highly enantioselective synthesis of 5-ethylindolobenzazepinone C, a promising antimitotic agent, has been rapidly completed. Furthermore, the amide group in the products enables versatile elaborations through directed C-H functionalization.
Collapse
Affiliation(s)
- Yao Zhang
- Guangdong Provincial Key Laboratory of Catalysis, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China.,School of Innovation and Entrepreneurship, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yun-Qi Liu
- Guangdong Provincial Key Laboratory of Catalysis, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Le'an Hu
- Guangdong Provincial Key Laboratory of Catalysis, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xumu Zhang
- Guangdong Provincial Key Laboratory of Catalysis, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Qin Yin
- Guangdong Provincial Key Laboratory of Catalysis, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China.,Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518000, China
| |
Collapse
|
6
|
Zhang S, Chen F, He YM, Fan QH. Asymmetric Hydrogenation of Dibenzo[c,e]azepine Derivatives with Chiral Cationic Ruthenium Diamine Catalysts. Org Lett 2019; 21:5538-5541. [DOI: 10.1021/acs.orglett.9b01859] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shanshan Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (CAS), and University of Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Fei Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (CAS), and University of Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yan-Mei He
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (CAS), and University of Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Qing-Hua Fan
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (CAS), and University of Chinese Academy of Sciences, Beijing 100190, P. R. China
| |
Collapse
|
7
|
Abstract
A simple approach to synthesize 4b,5,6,9-tetrahydro-7H-dibenzo[c,e]pyrrolo[1,2-a]azepin- 7-one has been developed, based on a three-step transformation of 2-(2-bromophenyl)cyclopropane-1,1-diester. The key stage in this method is an intramolecular cross-coupling of 1-(2-bromobenzyl)-5-(2-bromophenyl)pyrrolidin-2-one under continuous flow conditions in an H-Сube-Pro using commercially available supported Pd catalysts.
Collapse
|
8
|
Yang T, Guo X, Yin Q, Zhang X. Intramolecular asymmetric reductive amination: synthesis of enantioenriched dibenz[ c, e]azepines. Chem Sci 2018; 10:2473-2477. [PMID: 30881676 PMCID: PMC6385856 DOI: 10.1039/c8sc04482a] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 12/21/2018] [Indexed: 01/11/2023] Open
Abstract
An enantioselective synthesis of dibenz[c,e]azepines containing both central and axial chiralities through a one pot N-Boc deprotection/intramolecular asymmetric reductive amination sequence has been achieved with generally excellent enantiocontrol (up to 97% ee).
An Ir-catalyzed intramolecular asymmetric reductive amination (ARA) of bridged biaryl derivatives has been described. Using this unprecedented approach, synthetically useful dibenz[c,e]azepines containing both central and axial chiralities are obtained with excellent enantiocontrol (up to 97% ee). This methodology represents a rare example of enantioselective chemocatalytic synthesis of chiral dibenz[c,e]azepines featuring a broad substrate scope, and their synthetic utilities are exhibited by derivatizing the products into a chiral amino acid derivative and chiral phosphoramidite ligands, which display excellent enantiocontrol in Rh-catalyzed asymmetric hydrogenation of α-dehydroamino acid derivatives. Remarkably, our method is also applicable to enantioselectively synthesize an allocolchicine analogue.
Collapse
Affiliation(s)
- Tao Yang
- Shenzhen Grubbs Institute and Department of Chemistry , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , People's Republic of China .
| | - Xiaochong Guo
- Shenzhen Grubbs Institute and Department of Chemistry , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , People's Republic of China .
| | - Qin Yin
- Shenzhen Grubbs Institute and Department of Chemistry , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , People's Republic of China . .,SUSTech Academy for Advanced Interdisciplinary Studies , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , People's Republic of China .
| | - Xumu Zhang
- Shenzhen Grubbs Institute and Department of Chemistry , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , People's Republic of China .
| |
Collapse
|
9
|
Chrzanowski J, Krasowska D, Urbaniak M, Sieroń L, Pokora-Sobczak P, Demchuk OM, Drabowicz J. Synthesis of Enantioenriched Aryl-tert-Butylphenylphosphine Oxides via Cross-Coupling Reactions oftert-Butylphenylphosphine Oxide with Aryl Halides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800698] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jacek Chrzanowski
- Centre of Molecular and Macromolecular Studies; Polish Academy of Sciences; Sienkiewicza 112 90-363 Lodz Poland
| | - Dorota Krasowska
- Centre of Molecular and Macromolecular Studies; Polish Academy of Sciences; Sienkiewicza 112 90-363 Lodz Poland
| | - Małgorzata Urbaniak
- Centre of Molecular and Macromolecular Studies; Polish Academy of Sciences; Sienkiewicza 112 90-363 Lodz Poland
| | - Lesław Sieroń
- Institute of General and Ecological Chemistry; Lodz University of Technology; Zeromskiego 116 90-924 Lodz Poland
| | - Patrycja Pokora-Sobczak
- Centre of Molecular and Macromolecular Studies; Polish Academy of Sciences; Sienkiewicza 112 90-363 Lodz Poland
| | - Oleg M. Demchuk
- Department of Organic Chemistry; Maria Curie-Sklodowska University; 33 Gliniana St. 20-614 Lublin Poland
| | - Józef Drabowicz
- Centre of Molecular and Macromolecular Studies; Polish Academy of Sciences; Sienkiewicza 112 90-363 Lodz Poland
- Department of Chemistry; Environmental Protection and Biotechnology; Jan Dlugosz University in Czestochowa; Armii Krajowej Ave. 13/15 42-200 Czestochowa Poland
| |
Collapse
|
10
|
Saini HK, Nandwana NK, Dhiman S, Rangan K, Kumar A. Sequential Copper-Catalyzed Sonogashira Coupling, Hydroamination and Palladium-Catalyzed Intramolecular Direct Arylation: Synthesis of Azepino-Fused Isoindolinones. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701379] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hitesh Kumar Saini
- Department of Chemistry; BITS Pilani; Pilani Campus 333031 Pilani Rajasthan India
| | | | - Shiv Dhiman
- Department of Chemistry; BITS Pilani; Pilani Campus 333031 Pilani Rajasthan India
| | - Krishnan Rangan
- Department of Chemistry; BITS Pilani; Hyderabad Campus 500078 Secunderabad Telangana India
| | - Anil Kumar
- Department of Chemistry; BITS Pilani; Pilani Campus 333031 Pilani Rajasthan India
| |
Collapse
|
11
|
Balgobin SMC, Brookes DJ, Jiang J, Pritchard RG, Wallace TW. Axial stereocontrol in tropos dibenz[c,e]azepines: the individual and cooperative effects of alkyl substituents. Org Biomol Chem 2017; 15:10184-10199. [PMID: 29177299 DOI: 10.1039/c7ob02385e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
6,7-Dihydro-5H-dibenz[c,e]azepines, a class of secondary amine incorporating a centre-axis chirality relay, can be prepared from N-(2-bromobenzyl)-N-(1-arylalkyl)methanesulfonamides via Pd-catalysed intramolecular direct arylation, and methylated at C(7) via the 5,7-trans diastereoselective addition of methylmagnesium bromide to the derived N-benzylazepinium tetraphenylborate. Using these methods, the 4,5-dimethylated and 4,5,7-trimethylated homologues 13 and 14 were obtained and shown by 1H NMR spectroscopy to be axially biased in opposite senses, as defined by the respective pseudoaxial or pseudoequatorial orientation of the 5-substituent in the preferred conformers, while retaining their tropos nature (the Arrhenius activation energy, EA, for the conformational exchange process in 14 was estimated to be 57 kJ mol-1 using 2D-EXSY NMR spectroscopy at 233-248 K). These results serve to illustrate how substituent effects might be exploited in new designs of bridged biaryl ligand in which tropos dynamics operate in combination with a pre-existing axial stereochemical bias.
Collapse
Affiliation(s)
- Sinead M C Balgobin
- School of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | | | | | | | | |
Collapse
|
12
|
France SP, Aleku GA, Sharma M, Mangas-Sanchez J, Howard RM, Steflik J, Kumar R, Adams RW, Slabu I, Crook R, Grogan G, Wallace TW, Turner NJ. Biocatalytic Routes to Enantiomerically Enriched Dibenz[c
,e
]azepines. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708453] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Scott P. France
- School of Chemistry; University of Manchester; Manchester Institute of Biotechnology; 131 Princess Street Manchester M17DN UK
| | - Godwin A. Aleku
- School of Chemistry; University of Manchester; Manchester Institute of Biotechnology; 131 Princess Street Manchester M17DN UK
| | - Mahima Sharma
- York Structural Biology Laboratory; Department of Chemistry; University of York; Heslington York YO10 5DD UK
| | - Juan Mangas-Sanchez
- School of Chemistry; University of Manchester; Manchester Institute of Biotechnology; 131 Princess Street Manchester M17DN UK
| | - Roger M. Howard
- Groton Laboratories; Pfizer Worldwide Research and Development; 445 Eastern Point Road Groton CT 06340 USA
- Sandwich Laboratories; Pfizer Worldwide Research and Development; Discovery Park Sandwich, Kent CT13 9NJ UK
| | - Jeremy Steflik
- Groton Laboratories; Pfizer Worldwide Research and Development; 445 Eastern Point Road Groton CT 06340 USA
| | - Rajesh Kumar
- Groton Laboratories; Pfizer Worldwide Research and Development; 445 Eastern Point Road Groton CT 06340 USA
| | - Ralph W. Adams
- School of Chemistry; University of Manchester; Manchester M13 9PL UK
| | - Iustina Slabu
- School of Chemistry; University of Manchester; Manchester Institute of Biotechnology; 131 Princess Street Manchester M17DN UK
| | - Robert Crook
- Sandwich Laboratories; Pfizer Worldwide Research and Development; Discovery Park Sandwich, Kent CT13 9NJ UK
| | - Gideon Grogan
- York Structural Biology Laboratory; Department of Chemistry; University of York; Heslington York YO10 5DD UK
| | | | - Nicholas J. Turner
- School of Chemistry; University of Manchester; Manchester Institute of Biotechnology; 131 Princess Street Manchester M17DN UK
| |
Collapse
|
13
|
France SP, Aleku GA, Sharma M, Mangas-Sanchez J, Howard RM, Steflik J, Kumar R, Adams RW, Slabu I, Crook R, Grogan G, Wallace TW, Turner NJ. Biocatalytic Routes to Enantiomerically Enriched Dibenz[c,e]azepines. Angew Chem Int Ed Engl 2017; 56:15589-15593. [PMID: 29024400 DOI: 10.1002/anie.201708453] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Indexed: 11/11/2022]
Abstract
Biocatalytic retrosynthetic analysis of dibenz[c,e]azepines has highlighted the use of imine reductase (IRED) and ω-transaminase (ω-TA) biocatalysts to establish the key stereocentres of these molecules. Several enantiocomplementary IREDs were identified for the synthesis of (R)- and (S)-5-methyl-6,7-dihydro-5H-dibenz[c,e]azepine with excellent enantioselectivity, by reduction of the parent imines. Crystallographic evidence suggests that IREDs may be able to bind one conformer of the imine substrate such that, upon reduction, the major product conformer is generated directly. ω-TA biocatalysts were also successfully employed for the production of enantiopure 1-(2-bromophenyl)ethan-1-amine, thus enabling an orthogonal route for the installation of chirality into dibenz[c,e]azepine framework.
Collapse
Affiliation(s)
- Scott P France
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester, M17DN, UK
| | - Godwin A Aleku
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester, M17DN, UK
| | - Mahima Sharma
- York Structural Biology Laboratory, Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
| | - Juan Mangas-Sanchez
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester, M17DN, UK
| | - Roger M Howard
- Groton Laboratories, Pfizer Worldwide Research and Development, 445 Eastern Point Road, Groton, CT, 06340, USA.,Sandwich Laboratories, Pfizer Worldwide Research and Development, Discovery Park, Sandwich, Kent, CT13 9NJ, UK
| | - Jeremy Steflik
- Groton Laboratories, Pfizer Worldwide Research and Development, 445 Eastern Point Road, Groton, CT, 06340, USA
| | - Rajesh Kumar
- Groton Laboratories, Pfizer Worldwide Research and Development, 445 Eastern Point Road, Groton, CT, 06340, USA
| | - Ralph W Adams
- School of Chemistry, University of Manchester, Manchester, M13 9PL, UK
| | - Iustina Slabu
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester, M17DN, UK
| | - Robert Crook
- Sandwich Laboratories, Pfizer Worldwide Research and Development, Discovery Park, Sandwich, Kent, CT13 9NJ, UK
| | - Gideon Grogan
- York Structural Biology Laboratory, Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
| | - Timothy W Wallace
- School of Chemistry, University of Manchester, Manchester, M13 9PL, UK
| | - Nicholas J Turner
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester, M17DN, UK
| |
Collapse
|
14
|
Ghosh M, Ray JK. Ten years advancement in the synthetic applications of 2-bromo-cyclohexenecarbaldehydes and 2-bromobenzaldehydes and derived substrates under palladium-catalyzed cross-coupling conditions. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.05.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
15
|
Rossington SB, Hadfield JA, Shnyder SD, Wallace TW, Williams KJ. Tubulin-binding dibenz[c,e]oxepines: Part 2. Structural variation and biological evaluation as tumour vasculature disrupting agents. Bioorg Med Chem 2017; 25:1630-1642. [PMID: 28143677 DOI: 10.1016/j.bmc.2017.01.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/11/2017] [Accepted: 01/17/2017] [Indexed: 02/07/2023]
Abstract
5,7-Dihydro-3,9,10,11-tetramethoxybenz[c,e]oxepin-4-ol 1, prepared from a dibenzyl ether precursor via Pd-catalysed intramolecular direct arylation, possesses broad-spectrum in vitro cytotoxicity towards various tumour cell lines, and induces vascular shutdown, necrosis and growth delay in tumour xenografts in mice at sub-toxic doses. The biological properties of 1 and related compounds can be attributed to their ability to inhibit microtubule assembly at the micromolar level, by binding reversibly to the same site of the tubulin αβ-heterodimer as colchicine 2 and the allocolchinol, N-acetylcolchinol 4.
Collapse
Affiliation(s)
- Steven B Rossington
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - John A Hadfield
- School of Environment and Life Sciences, University of Salford, Salford M5 4WT, UK
| | - Steven D Shnyder
- Institute of Cancer Therapeutics, University of Bradford, Richmond Road, Bradford BD7 1DP, UK
| | - Timothy W Wallace
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | - Kaye J Williams
- Manchester Pharmacy School, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| |
Collapse
|
16
|
Diemer V, Maury J, Le Bailly BAF, Webb SJ, Clayden J. Dibenzazepinyl ureas as dual NMR and CD probes of helical screw-sense preference in conformationally equilibrating dynamic foldamers. Chem Commun (Camb) 2017; 53:10768-10771. [DOI: 10.1039/c7cc06427f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Dibenzazepinyl ureas act as probes to allow conformational analysis of screw-sense preference in dynamic foldamers by both NMR and CD spectroscopy.
Collapse
Affiliation(s)
- Vincent Diemer
- School of Chemistry
- University of Manchester
- Manchester M13 9PL
- UK
| | - Julien Maury
- School of Chemistry
- University of Manchester
- Manchester M13 9PL
- UK
| | | | - Simon J. Webb
- School of Chemistry
- University of Manchester
- Manchester M13 9PL
- UK
- Manchester Institute of Biotechnology
| | | |
Collapse
|
17
|
Bulman Page PC, Pearce CA, Chan Y, Parker P, Buckley BR, Rassias GA, Elsegood MRJ. Atropo- and Diastereoselective Construction of Tetracyclic Biphenylazepinium Salts Derived from Aminoalcohols: Use as Catalysts in Enantioselective Asymmetric Epoxidation. J Org Chem 2015. [DOI: 10.1021/acs.joc.5b01157] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Philip C. Bulman Page
- School
of Chemistry, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ, U.K
| | - Christopher A. Pearce
- School
of Chemistry, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ, U.K
| | - Yohan Chan
- School
of Chemistry, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ, U.K
| | - Phillip Parker
- Chemistry
Department, Loughborough University, Loughborough, Leicestershire LE11 3TU, U.K
| | - Benjamin R. Buckley
- Chemistry
Department, Loughborough University, Loughborough, Leicestershire LE11 3TU, U.K
| | | | - Mark R. J. Elsegood
- Chemistry
Department, Loughborough University, Loughborough, Leicestershire LE11 3TU, U.K
| |
Collapse
|
18
|
Coya E, Sotomayor N, Lete E. Intramolecular Direct Arylation and Heck Reactions in the Formation of Medium-Sized Rings: Selective Synthesis of Fused Indolizine, Pyrroloazepine and Pyrroloazocine Systems. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400075] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|