1
|
Fordyce EAF, Fraser Hunt S, Crepin D, Onions ST, Parra GF, Sleigh CJ, King-Underwood J, Finch H, Murray J. Conformationally restricted benzothienoazepine respiratory syncytial virus inhibitors: their synthesis, structural analysis and biological activities. Medchemcomm 2018; 9:583-589. [PMID: 30108949 DOI: 10.1039/c8md00033f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 02/16/2018] [Indexed: 11/21/2022]
Abstract
Atropisomeric drug substances are known to have different biological properties. Compounds containing the N-benzoylbenzazepine motif have been shown to exhibit energetically restricted rotation around the Ar(CO)N axis. Herein we report, for the first time, the synthesis, physical characterisation and anti-viral profiles of a series of C-4 and C-5 methylated thieno-benzazepines. NMR analysis reveals that incorporation of a single additional substituent at either of these loci influences the conformational dynamics of the azepine ring system. In the case of the C-5 alkyl analogues, the influence of the new stereocentre is so pronounced that its absolute configuration determines which unique atropisomer is obtained following the generation of the benzazepine nucleus. Screening of the alkylated derivatives for their anti-respiratory syncytial virus (RSV) activity indicates that the desired viral pathogenicity is strongly associated with the conformation adopted by the modified tricyclic scaffolds. This is particularly evident in the case of the C-5 homologues in which one atropisomer was found to be potently active and the other essentially inert. These results provide compelling evidence that we have determined the bioactive conformation shared by RSV inhibitors that employ the thienobenazapine nucleus as their core molecular architecture. Furthermore, the understanding obtained from these studies may make it possible to design improved agents against RSV infection in the future.
Collapse
Affiliation(s)
- Euan A F Fordyce
- Sygnature Discovery Ltd. , BioCity , Nottingham , NG1 1GF , UK . ; Tel: +44 (0)1159415401
| | - S Fraser Hunt
- Sygnature Discovery Ltd. , BioCity , Nottingham , NG1 1GF , UK . ; Tel: +44 (0)1159415401
| | - Damien Crepin
- Sygnature Discovery Ltd. , BioCity , Nottingham , NG1 1GF , UK . ; Tel: +44 (0)1159415401
| | - Stuart T Onions
- Sygnature Discovery Ltd. , BioCity , Nottingham , NG1 1GF , UK . ; Tel: +44 (0)1159415401
| | - Guillaume F Parra
- Sygnature Discovery Ltd. , BioCity , Nottingham , NG1 1GF , UK . ; Tel: +44 (0)1159415401
| | - Chris J Sleigh
- Sygnature Discovery Ltd. , BioCity , Nottingham , NG1 1GF , UK . ; Tel: +44 (0)1159415401
| | - John King-Underwood
- CompChem Resource , Old Cottage Hospital , Homend , Ledbury , Herefordshire HR8 1ED , UK
| | - Harry Finch
- Pulmocide Ltd. , 52 Princes Gate, Exhibition Road, South Kensington , London , SW7 2PG , UK . ; Tel: +44 (0)2037639484
| | - John Murray
- Pulmocide Ltd. , 52 Princes Gate, Exhibition Road, South Kensington , London , SW7 2PG , UK . ; Tel: +44 (0)2037639484
| |
Collapse
|
2
|
Fordyce EAF, Fraser Hunt S, Crepin D, Onions ST, Parra GF, Sleigh CJ, King-Underwood J, Finch H, Murray J. Correction: Conformationally restricted benzothienoazepine respiratory syncytial virus inhibitors: their synthesis, structural analysis and biological activities. Med Chem Commun 2018; 9:746. [PMID: 30288214 PMCID: PMC6146609 DOI: 10.1039/c8md90016g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 03/19/2018] [Indexed: 11/26/2022]
Abstract
Correction for ‘Conformationally restricted benzothienoazepine respiratory syncytial virus inhibitors: their synthesis, structural analysis and biological activities’ by Euan A. F. Fordyce et al., Med. Chem. Commun., 2018, DOI: ; 10.1039/c8md00033f.
Collapse
|
3
|
Onions ST, Ito K, Charron CE, Brown RJ, Colucci M, Frickel F, Hardy G, Joly K, King-Underwood J, Kizawa Y, Knowles I, Murray PJ, Novak A, Rani A, Rapeport G, Smith A, Strong P, Taddei DM, Williams JG. Discovery of Narrow Spectrum Kinase Inhibitors: New Therapeutic Agents for the Treatment of COPD and Steroid-Resistant Asthma. J Med Chem 2016; 59:1727-46. [PMID: 26800309 DOI: 10.1021/acs.jmedchem.5b01029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The discovery of a novel series of therapeutic agents that has been designed and optimized for treating chronic obstructive pulmonary disease is reported. The pharmacological strategy was based on the identification of compounds that inhibit a defined subset of kinase enzymes modulating inflammatory processes that would be effective against steroid refractory disease and exhibit a sustained duration of action after inhaled delivery.
Collapse
Affiliation(s)
- Stuart T Onions
- Sygnature Discovery Limited, Biocity , Nottingham NG1 1GF, United Kingdom
| | - Kazuhiro Ito
- RespiVert Limited , 2 Royal College Street, The London Bioscience Innovation Centre, London NW1 0NH, United Kingdom
| | - Catherine E Charron
- RespiVert Limited , 2 Royal College Street, The London Bioscience Innovation Centre, London NW1 0NH, United Kingdom
| | - Richard J Brown
- Sygnature Discovery Limited, Biocity , Nottingham NG1 1GF, United Kingdom
| | - Marie Colucci
- Sygnature Discovery Limited, Biocity , Nottingham NG1 1GF, United Kingdom
| | - Fritz Frickel
- RespiVert Limited , 2 Royal College Street, The London Bioscience Innovation Centre, London NW1 0NH, United Kingdom
| | - George Hardy
- RespiVert Limited , 2 Royal College Street, The London Bioscience Innovation Centre, London NW1 0NH, United Kingdom
| | - Kevin Joly
- Sygnature Discovery Limited, Biocity , Nottingham NG1 1GF, United Kingdom
| | - John King-Underwood
- CompChem Resource , Old Cottage Hospital, Homend, Ledbury, Herefordshire HR8 1ED, United Kingdom
| | - Yasuo Kizawa
- Department of Physiology and Anatomy, Nihon University School of Pharmacy , 7-7-1, Narashinodai, Funabashi, Chiba 274-8555, Japan
| | - Ian Knowles
- Pneumolabs UK Limited , Harrow, Middlesex HA1 3UJ, United Kingdom
| | - P John Murray
- RespiVert Limited , 2 Royal College Street, The London Bioscience Innovation Centre, London NW1 0NH, United Kingdom
| | - Andrew Novak
- Sygnature Discovery Limited, Biocity , Nottingham NG1 1GF, United Kingdom
| | - Anjna Rani
- Sygnature Discovery Limited, Biocity , Nottingham NG1 1GF, United Kingdom
| | - Garth Rapeport
- RespiVert Limited , 2 Royal College Street, The London Bioscience Innovation Centre, London NW1 0NH, United Kingdom
| | - Alun Smith
- Sygnature Discovery Limited, Biocity , Nottingham NG1 1GF, United Kingdom
| | - Peter Strong
- RespiVert Limited , 2 Royal College Street, The London Bioscience Innovation Centre, London NW1 0NH, United Kingdom
| | - David M Taddei
- Sygnature Discovery Limited, Biocity , Nottingham NG1 1GF, United Kingdom
| | | |
Collapse
|
4
|
Thompson LK, Kelly TL, Dawe LN, Grove H, Lemaire MT, Howard JAK, Spencer EC, Matthews CJ, Onions ST, Coles SJ, Horton PN, Hursthouse MB, Light ME. Mixed Valence Mn(II)/Mn(III) [3 × 3] Grid Complexes: Structural, Electrochemical, Spectroscopic, and Magnetic Properties. Inorg Chem 2004; 43:7605-16. [PMID: 15554625 DOI: 10.1021/ic040083a] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Mn(II)9 grid complexes with a [Mn9(mu-O)12] core, obtained by self-assembly of a series of tritopic picolinic dihydrazone ligands with Mn(II) salts, have been oxidized by both chemical and electrochemical methods to produce mixed oxidation state systems. Examples involving [Mn(III)3Mn(II)6] and [Mn(III)4Mn(II)5] combinations have been produced. Structures are reported for [Mn9(2poap-2H)6](NO3)6.14H2O (1), [Mn9(2poap-2H)6](ClO4)10.10H2O (3), and [Mn9(Cl2poap-2H)6](ClO4)9.14H2O.3CH3CN (10). Structural studies show distinct contraction of the corner grid sites on oxidation, with overall magnetic properties consistent with the resulting changes in electron distribution. Antiferromagnetic exchange in the outer ring of eight metal centers creates a ferrimagnetic subunit, which undergoes antiferromagnetic coupling to the central metal, leading to S=1/2 (3) and S2/2 (10) ground states. Two moderately intense absorptions are observed on oxidation of the Mn(II) grids in the visible and near-infrared (1000 nm, 700 nm), associated with charge transfer transitions (LMCT, IVCT respectively). Compound 1 crystallized in the monoclinic system, space group P2 1/n, with a=21.308(2) A, b=23.611(2) A, c=32.178(3) A, beta=93.820(2) degrees . Compound 3 crystallized in the tetragonal system, space group I, with a=b=18.44410(10) A, c = 24.9935(3) A. Compound 10 crystallized in the triclinic system, space group P, with a=19.1150(10) A, b=19.7221(10) A, c=26.8334(14) A, alpha=74.7190(10) degrees, beta=77.6970(10) degrees, gamma=64.7770(10) degrees. The facile oxidation of the Mn(II)9 grids is highlighted in terms of their potential use as molecular based platforms for switching and data storage.
Collapse
Affiliation(s)
- Laurence K Thompson
- Department of Chemistry, Memorial University, St. John's, Newfoundland, A1B 3X7 Canada.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
5
|
Onions ST, Heath SL, Price DJ, Harrington RW, Clegg W, Matthews CJ. Self-Assembly of a Spin-Coupled Octanuclear Copper(II) Circular Array from a Single-Stranded Ligand. Angew Chem Int Ed Engl 2004; 43:1814-7. [PMID: 15054782 DOI: 10.1002/anie.200352554] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Stuart T Onions
- Chemistry Division, School of Science, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, UK
| | | | | | | | | | | |
Collapse
|
6
|
|
7
|
Matthews CJ, Onions ST, Morata G, Davis LJ, Heath SL, Price DJ. A self-assembled tetracopper triple-stranded helicate: towards the controlled synthesis of finite one-dimensional magnetic chains. Angew Chem Int Ed Engl 2003; 42:3166-9. [PMID: 12866108 DOI: 10.1002/anie.200351634] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Craig J Matthews
- Department of Chemistry and Physics, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, UK.
| | | | | | | | | | | |
Collapse
|
8
|
Matthews CJ, Onions ST, Morata G, Salvia MB, Elsegood MRJ, Price DJ. Synthesis, structure and magnetism of a unique dodecanuclearcopper(II) 'picture frame' held in a 4 x 4 grid-like assembly. Chem Commun (Camb) 2003:320-1. [PMID: 12613592 DOI: 10.1039/b210891g] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis, structure and preliminary magnetic studies of a novel dodecanuclearcopper(II) grid-like assembly are reported.
Collapse
Affiliation(s)
- Craig J Matthews
- Department of Chemistry and Physics, Nottingham Trent University, Clifton Lane, Nottingham, UK NG11 8NS.
| | | | | | | | | | | |
Collapse
|
9
|
Onions ST, Frankin AM, Horton PN, Hursthouse MB, Matthews CJ. Self-assembly of a unique hexadecanuclear [4 × (2 × 2)]-Pb16 ‘grid of grids’ type structure. Chem Commun (Camb) 2003:2864-5. [PMID: 14680213 DOI: 10.1039/b308512k] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new ligand containing a linear sequence of four-tridentate chelating subunits built around alkoxide and pyrimidine bridging groups undergoes a spontaneous self-assembly process with Pb(CF3SO3)2 to produce a unique hexadecanuclear [4 x (2 x 2)] 'grid of grids' type structure with external dimensions of 26 A.
Collapse
Affiliation(s)
- Stuart T Onions
- Division of Chemistry, School of Science, Nottingham Trent University, Clifton Lane, Nottingham, UK NG11 8NS
| | | | | | | | | |
Collapse
|