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Zhang Z, Yamada YMA. Recent Advancements in Continuous-Flow Suzuki-Miyaura Coupling Utilizing Immobilized Molecular Palladium Complexes. Chemistry 2024; 30:e202304335. [PMID: 38418426 DOI: 10.1002/chem.202304335] [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: 12/27/2023] [Revised: 02/25/2024] [Accepted: 02/26/2024] [Indexed: 03/01/2024]
Abstract
Immobilized Pd-catalyzed Suzuki-Miyaura coupling under continuous-flow conditions using a packed-bed reactor, representing an efficient, automated, practical, and safe technology compared to conventional batch-type reactions. The core objective of this study is the development of an active and durable catalyst. In contrast to supported Pd nanoparticles, the attachment of Pd complexes onto solid supports through well-defined coordination sites is considered a favorable approach for preparing highly dispersed and stabilized Pd species. These species can be directly employed in various flow reactions without the need for pre-treatment. This concept paper explores recent achievements involving the application of immobilized Pd complexes as precatalysts for continuous-flow Suzuki-Miyaura coupling. Our focus is to elucidate the significance of the designed catalyst structures in relation to their catalytic performance under flow conditions. Additionally, we highlight various reaction systems and catalyst packing methods, emphasizing their crucial roles in establishing a practical synthesis process.
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Affiliation(s)
- Zhenzhong Zhang
- RIKEN Center for Sustainable Resource Science Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Yoichi M A Yamada
- RIKEN Center for Sustainable Resource Science Hirosawa, Wako, Saitama, 351-0198, Japan
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2
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Bertman KA, Abeywickrama CS, Pang Y. A NIR Emitting Cyanine with Large Stokes' Shift for Mitochondria and Identification of their Membrane Potential Disruption. Chembiochem 2021; 23:e202100516. [PMID: 34783144 DOI: 10.1002/cbic.202100516] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 11/12/2021] [Indexed: 12/11/2022]
Abstract
An NIR emitting (λem ≈730 nm) cyanine probe ExCy was synthesized in good yields by extending the π-conjugation length (i. e., with furan moiety) to the donor-accepter system. ExCy exhibited a large Stokes' shift (Δλ≈100 nm) due to strong intramolecular charge transfer (ICT), and high fluorescence quantum yield (Φfl ≈0.47 in DCM). Due to its low fluorescence in an aqueous environment (Φfl ≈0.007 in H2 O), the probe exhibited the potential of achieving a large fluorescence turn-on upon entering a hydrophobic cellular environment. Fluorescence confocal microscopy studies revealed that ExCy was readily excitable with a far-red laser line (i. e., 640 nm) while the corresponding emission was collected in the NIR region. ExCy exhibited excellent selectivity towards live cell mitochondria according to the co-localization studies. The probe also exhibited high photostability, long-term imaging ability and wash-free staining ability, when being applied to live cells. Our studies indicated that the mitochondrial localization of ExCy was dependent on the membrane potential of the mitochondria. ExCy was successfully utilized as a mitochondrial membrane potential dysfunction indicator to visually identify cells with mitochondrial dysfunction via fluorescence confocal microscopy. ExCy was further examined for potential in vivo imaging of zebrafish.
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Affiliation(s)
- Keti A Bertman
- Department of Chemistry, University of Akron, Akron, Ohio, 44325, USA
| | | | - Yi Pang
- Department of Chemistry, University of Akron, Akron, Ohio, 44325, USA.,Maurice Morton Institute of Polymer Science, University of Akron, Akron, Ohio, 44325, USA
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3
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Development of Facile and Simple Processes for the Heterogeneous Pd-Catalyzed Ligand-Free Continuous-Flow Suzuki–Miyaura Coupling. Catalysts 2020. [DOI: 10.3390/catal10101209] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The Suzuki–Miyaura coupling reaction is one of the most widely utilized C–C bond forming methods to create (hetero)biaryl scaffolds. The continuous-flow reaction using heterogeneous catalyst-packed cartridges is a practical and efficient synthetic method to replace batch-type reactions. A continuous-flow ligand-free Suzuki–Miyaura coupling reaction of (hetero)aryl iodides, bromides, and chlorides with (hetero)aryl boronic acids was developed using cartridges packed with spherical resin (tertiary amine-based chelate resin: WA30)-supported palladium catalysts (7% Pd/WA30). The void space in the cartridge caused by the spherical catalyst structures enables the smooth flow of a homogeneously dissolved reaction solution that consists of a mixture of organic and aqueous solvents and is delivered by the use of a single syringe pump. Clogging or serious backpressure was not observed.
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4
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Jiao S, Zhai J, Yang S, Meng X. A highly responsive, sensitive NIR fluorescent probe for imaging of superoxide anion in mitochondria of oral cancer cells. Talanta 2020; 222:121566. [PMID: 33167262 DOI: 10.1016/j.talanta.2020.121566] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 08/08/2020] [Accepted: 08/11/2020] [Indexed: 12/16/2022]
Abstract
Superoxide anion (O2•-) is an important biomarker for reactive oxygen species (ROS) generated through physiological and pathological processes. However, due to the short half-life of O2•- and high autofluorescence of cell tissues, in situ real-time tracking and monitoring of endogenous O2•- can be difficult. In this paper, a fluorescent probe IFP-O2 was developed to detect endogenous O2•- in cells. The probe could instantaneously react with O2•- to produce fluorescence off-on effect; its detection limit was as low as 10 nM. Cell experiments also showed that the probe had low toxicity and mitochondrial targeting ability. The article presents, for the first time, a probe that can be employed to measure endogenous O2•- in oral cancer Cal-27 cells and is a promising tool for monitoring and evaluating apoptosis.
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Affiliation(s)
- Shan Jiao
- Hospital of Stomatology, Jilin University, Qinghua Road 1500, Changchun, 130021, China
| | - Jingjie Zhai
- Hospital of Stomatology, Jilin University, Qinghua Road 1500, Changchun, 130021, China
| | - Si Yang
- Department of Pediatric Neurology, The First Hospital of Jilin University, Xinmin Street 71, Changchun, 130021, China
| | - Xiuping Meng
- Hospital of Stomatology, Jilin University, Qinghua Road 1500, Changchun, 130021, China.
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5
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Bertman KA, Abeywickrama CS, Pang Y. Synthesis of a far-red emitting flavonoid-based lysosome marker for live cell imaging applications. Bioorg Chem 2020; 102:104040. [PMID: 32659485 DOI: 10.1016/j.bioorg.2020.104040] [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: 01/20/2020] [Revised: 06/21/2020] [Accepted: 06/22/2020] [Indexed: 11/29/2022]
Abstract
A bright far-red emitting flavonoid derivative (FuraET) was synthesized in good yields by inserting a π extension group (i.e., furan) into the flavonoid skeleton, via using the Suzuki-Miyaura cross-coupling reaction. FuaraET exhibited optical absorption at λab ≈ 450 nm and emission λem ≈ 660 nm by recognizing as the first far-red emitting flavonoid derivative reported. FuraET exhibited a large Stokes shift (Δλ > 150 nm) high fluorescent quantum yield (φfl ≈ 0.2-0.4), and good photostability indicating excellent characteristics for an imaging probe. Live cell fluorescent confocal microscopy imaging revealed the exceptional selectivity of the FuraET towards cellular lysosomes (Mander's overlap coefficients >0.9). The observed non-alkalinizing nature and high biocompatibility (LC50 > 50 µM) suggested that FuraET can a reliable lysosome marker for live cell imaging experiments. Our further study also indicated that FuraET may likely internalized into hydrophobic regions of the cellular lysosomes in contrast to acidic lysosomal lumen.
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Affiliation(s)
| | | | - Yi Pang
- Department of Chemistry, University of Akron, Akron, OH 44325, USA; Maurice Morton Institute of Polymer Science, University of Akron, Akron, OH 44325, USA.
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6
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Al Otaibi A, Deane FM, Russell CC, Hizartzidis L, McCluskey SN, Sakoff JA, McCluskey A. A methanol and protic ionic liquid Ugi multicomponent reaction path to cytotoxic α-phenylacetamido amides. RSC Adv 2019; 9:7652-7663. [PMID: 35521167 PMCID: PMC9061180 DOI: 10.1039/c9ra00118b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 02/04/2019] [Indexed: 12/03/2022] Open
Abstract
The Ugi four component reaction of an aldehyde, amine, isocyanide and an ethanoic acid was effected smoothly in protic ionic liquids ethylammonium nitrate (EAN) and propylammonium nitrate (PAN) to afford analogues of α-phenylacetamido amides in good to excellent isolated yields. The corresponding reactions in [BMIM][PF6] and the protic ionic liquid ethanolammonium nitrate (ETAN) failed. Microwave irradiation in EAN facilitated rapid access to three focused libraries, based on the parent isocyanide: cyclohexyl isocyanide, benzyl isocyanide and ethyl isocyanoacetate. Analysis of the structure activity relationship data suggested the presence of a bulky moiety originating from the isocyanide (cyclohexyl and benzyl) enhanced cytotoxicity. Removal of the acetylenic H-atom from the ethanoic acid moiety was detrimental to cytotoxicity. The most active analogues produced, N-(2-cyclohexylamino)-1-(4-methoxyphenyl)-2-oxoethyl-N-(3,5-dimethoxyphenyl)propiolamide, returned average GI50 values of ≤1 μM across the cancer cell lines evaluated. Combined, these data suggest that analogues of this nature are interesting potential anti-cancer development leads. The Ugi reaction (aldehyde, amine, isocyanide and an ethanoic acid) in the protic ionic liquids ethylammonium nitrate (EAN) and propylammonium nitrate (PAN) gave excellent yields of α-phenylacetamido amides.![]()
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Affiliation(s)
- Ahmed Al Otaibi
- Chemistry, School of Environmental & Life Sciences
- The University of Newcastle
- Australia
| | - Fiona M. Deane
- Chemistry, School of Environmental & Life Sciences
- The University of Newcastle
- Australia
| | - Cecilia C. Russell
- Chemistry, School of Environmental & Life Sciences
- The University of Newcastle
- Australia
| | - Lacey Hizartzidis
- Chemistry, School of Environmental & Life Sciences
- The University of Newcastle
- Australia
| | - Siobhann N. McCluskey
- Chemistry, School of Environmental & Life Sciences
- The University of Newcastle
- Australia
| | | | - Adam McCluskey
- Chemistry, School of Environmental & Life Sciences
- The University of Newcastle
- Australia
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8
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Cossar PJ, Baker JR, Cain N, McCluskey A. In situ epoxide generation by dimethyldioxirane oxidation and the use of epichlorohydrin in the flow synthesis of a library of β-amino alcohols. ROYAL SOCIETY OPEN SCIENCE 2018; 5:171190. [PMID: 29765627 PMCID: PMC5936892 DOI: 10.1098/rsos.171190] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 02/21/2018] [Indexed: 06/08/2023]
Abstract
The flow coupling of epichlorohydrin with substituted phenols, while efficient, limits the nature of the epoxide available for the development of focused libraries of β-amino alcohols. This limitation was encountered in the production of analogues of 1-(4-nitrophenoxy)-3-((2-((4-(trifluoromethyl)pyrimidin-2-yl)amino)ethyl)amino)propan-2-ol 1, a potential antibiotic lead. The in situ (flow) generation of dimethyldoxirane (DMDO) and subsequent flow olefin epoxidation abrogates this limitation and afforded facile access to structurally diverse β-amino alcohols. Analogues of 1 were readily accessed either via (i) a flow/microwave hybrid approach, or (ii) a sequential flow approach. Key steps were the in situ generation of DMDO, with olefin epoxidation in typically good yields and a flow-mediated ring opening aminolysis to form an expanded library of β-amino alcohols 1 and 10a-18g, resulting in modest (11a, 21%) to excellent (12g, 80%) yields. Alternatively flow coupling of epichlorohydrin with phenols 4a-4m (22%-89%) and a Bi(OTf)3 catalysed microwave ring opening with amines afforded a select range of β-amino alcohols, but with lower levels of aminolysis regiocontrol than the sequential flow approach.
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Ghods A, Gilbert J, Baker JR, Russell CC, Sakoff JA, McCluskey A. A focused library synthesis and cytotoxicity of quinones derived from the natural product bolinaquinone. ROYAL SOCIETY OPEN SCIENCE 2018; 5:171189. [PMID: 29765626 PMCID: PMC5936891 DOI: 10.1098/rsos.171189] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 02/21/2018] [Indexed: 06/08/2023]
Abstract
Bolinaquinone is a natural product that is a structurally complex, cytotoxic sesquiterpene quinone. A scaffold simplification and focused library approach using a microwave-assisted Suzuki coupling gave 32 bolinaquinone analogues with good-to-excellent cytotoxicity profiles. Mono-arylbenzoquinones, Library A, were preferentially toxic towards BE2-C (neuroblastoma) cells with growth inhibition (GI50) values of 4-12 µM; only the 3,4-dimethoxyphenyl 23 and 3-biphenyl 28 variants were broad-spectrum active-HT29 (colon carcinoma), U87 and SJ-G2 (glioblastoma), MCF-7 (breast carcinoma), A2780 (ovarian carcinoma), H460 (lung carcinoma), A431 (skin carcinoma), Du145 (prostate carcinoma), BE2-C (neuroblastoma), MIA (pancreatic carcinoma) and SMA (spontaneous murine astrocytoma). Library B with a second aryl moiety exhibited broad-spectrum cytotoxicity with MCF-7 cells' GI50 values of 5.6 ± 0.7 and 5.1 ± 0.5 µM for 2,5-dimethoxy-3-(naphthalene-1-yl)-6-(naphthalene-3-yl) 33 and 2,5-dimethoxy-3-(biaryl-2-yl)-6-(naphthalene-3-yl) 36, respectively. Similar potencies were also noted with 2,5-dimethoxy-3,6-diphenyl 30 against A2780 (GI50 = 5.9 ± 0.0 µM) and with 2,5-dimethoxy-3-(biaryl-3-yl)-6-(naphthalene-3-yl) 37 against HT29 (GI50 = 5.4 ± 0.4 µM), while the 3,4-dimethoxy mono-aryl analogue 23 exhibited good levels of activity against A2780 (GI50 = 3.8 ± 0.75 µM), the neuroblastoma cell line BE2-C (GI50 = 3 ± 0.35 µM) and SMA (GI50 = 3.9 ± 0.54 µM). Introduction of the amino-substituted Library C gave 2-(naphthalen-1-yl)-5-(naphthalen-3-yl)-3,6-bis(propylamino) 43, with excellent activity against HT29 (0.08 ± 0.0 µM), MCF-7 (0.17 ± 0.1 µM), A2780 (0.14 ± 0.1 µM), A431 (0.11 ± 0.0 µM), Du145 (0.16 ± 0.1 µM), BE2-C (0.08 ± 0.0 µM) and MIA (0.1 ± 0.0 µM).
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Affiliation(s)
- Azadeh Ghods
- Chemistry, The University of Newcastle, University Drive Callaghan, Newcastle, New South Wales 2308, Australia
| | - Jayne Gilbert
- Chemistry, The University of Newcastle, University Drive Callaghan, Newcastle, New South Wales 2308, Australia
- Department of Medical Oncology, Calvary Mater Newcastle Hospital, Waratah, New South Wales 2298, Australia
| | - Jennifer R. Baker
- Chemistry, The University of Newcastle, University Drive Callaghan, Newcastle, New South Wales 2308, Australia
| | - Cecilia C. Russell
- Chemistry, The University of Newcastle, University Drive Callaghan, Newcastle, New South Wales 2308, Australia
| | - Jennette A. Sakoff
- Chemistry, The University of Newcastle, University Drive Callaghan, Newcastle, New South Wales 2308, Australia
- Department of Medical Oncology, Calvary Mater Newcastle Hospital, Waratah, New South Wales 2298, Australia
| | - Adam McCluskey
- Chemistry, The University of Newcastle, University Drive Callaghan, Newcastle, New South Wales 2308, Australia
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10
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Ionic liquids, microwave irradiation, and the synthesis of aryl Weinreb amides. MONATSHEFTE FUR CHEMIE 2018. [DOI: 10.1007/s00706-017-2089-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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12
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Sidarovich A, Will CL, Anokhina MM, Ceballos J, Sievers S, Agafonov DE, Samatov T, Bao P, Kastner B, Urlaub H, Waldmann H, Lührmann R. Identification of a small molecule inhibitor that stalls splicing at an early step of spliceosome activation. eLife 2017; 6. [PMID: 28300534 PMCID: PMC5354520 DOI: 10.7554/elife.23533] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 02/26/2017] [Indexed: 11/13/2022] Open
Abstract
Small molecule inhibitors of pre-mRNA splicing are important tools for identifying new spliceosome assembly intermediates, allowing a finer dissection of spliceosome dynamics and function. Here, we identified a small molecule that inhibits human pre-mRNA splicing at an intermediate stage during conversion of pre-catalytic spliceosomal B complexes into activated Bact complexes. Characterization of the stalled complexes (designated B028) revealed that U4/U6 snRNP proteins are released during activation before the U6 Lsm and B-specific proteins, and before recruitment and/or stable incorporation of Prp19/CDC5L complex and other Bact complex proteins. The U2/U6 RNA network in B028 complexes differs from that of the Bact complex, consistent with the idea that the catalytic RNA core forms stepwise during the B to Bact transition and is likely stabilized by the Prp19/CDC5L complex and related proteins. Taken together, our data provide new insights into the RNP rearrangements and extensive exchange of proteins that occurs during spliceosome activation. DOI:http://dx.doi.org/10.7554/eLife.23533.001
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Affiliation(s)
- Anzhalika Sidarovich
- Department of Cellular Biochemistry, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Cindy L Will
- Department of Cellular Biochemistry, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Maria M Anokhina
- Department of Cellular Biochemistry, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Javier Ceballos
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Sonja Sievers
- Compound Management and Screening Center, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Dmitry E Agafonov
- Department of Cellular Biochemistry, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Timur Samatov
- Department of Cellular Biochemistry, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Penghui Bao
- Department of Cellular Biochemistry, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Berthold Kastner
- Department of Cellular Biochemistry, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Henning Urlaub
- Bioanalytics Group, Institute for Clinical Chemistry Göttingen, University Medical Center, Göttingen, Germany
| | - Herbert Waldmann
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Reinhard Lührmann
- Department of Cellular Biochemistry, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
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Lin AJS, Russell CC, Baker JR, Frailey SL, Sakoff JA, McCluskey A. A facile hybrid 'flow and batch' access to substituted 3,4-dihydro-2H-benzo[b][1,4]oxazinones. Org Biomol Chem 2016; 14:8732-8742. [PMID: 27714138 DOI: 10.1039/c6ob01153e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe a simple flow chemistry approach to libraries of ethyl 3-oxo-2-(substituted-phenylamino)-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylates (12a-l) and N-ethyl-3-oxo-2-(substituted-phenylamino)-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxamides (13a-l) in 38-87% yields. This scaffold is poorly described in the chemical literature. Screening against a panel of 11 cancer and one normal cell line showed that the amide linked library 13a-l was devoid of toxicity. Whereas the ester linked analogues 12b, 12c, 12g, 12j and 12l were highly cytotoxic with growth inhibition (GI50) values from 0.34 to >50 μM across all cell lines, with the 2-OH-Ph substituted 12l analogue presenting with sub-micromolar potency against the A2780 (ovarian; 0.34 ± 0.04 μM), BEC-2 (glioblastoma; 0.35 ± 0.06 μM), MIA (pancreas; 0.91 ± 0.054 μM) and SMA (murine glioblastoma; 0.77 ± 0.029 μM) carcinoma cell lines. Interestingly, the U87 glioblastoma cell line showed inherent resistance to growth inhibition by all analogues (GI50 32 to >50 μM) while the A2780 cells were highly sensitive (GI50 3.8-0.34 μM), suggesting that the analogues developed herein may be valuable lead compounds for the development of ovarian carcinoma specific cytotoxic agents. The differences in amide versus ester cytotoxicity was consitent with esterase cleaveage to release the cytotoxic warhead.
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Affiliation(s)
- Andrew J S Lin
- Chemistry, Centre for Chemical Biology, School of Environmental & Life Sciences, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia.
| | - Cecilia C Russell
- Chemistry, Centre for Chemical Biology, School of Environmental & Life Sciences, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia.
| | - Jennifer R Baker
- Chemistry, Centre for Chemical Biology, School of Environmental & Life Sciences, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia.
| | - Shelby L Frailey
- Chemistry, Centre for Chemical Biology, School of Environmental & Life Sciences, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia. and Chemical Engineering, Trine University, Angola, IN, 46703 USA
| | - Jennette A Sakoff
- Department of Medical Oncology, Calvary Mater Newcastle Hospital, Waratah, NSW 2298, Australia
| | - Adam McCluskey
- Chemistry, Centre for Chemical Biology, School of Environmental & Life Sciences, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia.
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14
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Bergami M, Protti S, Ravelli D, Fagnoni M. Flow Metal-Free ArC Bond FormationviaPhotogenerated Phenyl Cations. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600019] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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15
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Trinh TN, McLaughlin EA, Abdel-Hamid MK, Gordon CP, Bernstein IR, Pye V, Cossar P, Sakoff JA, McCluskey A. Quinolone-1-(2H)-ones as hedgehog signalling pathway inhibitors. Org Biomol Chem 2016; 14:6304-15. [DOI: 10.1039/c6ob00606j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A series of quinolone-2-(1H)-ones derived from a Ugi-Knoevenagel three- and four-component reaction were prepared exhibiting low micromolar cytotoxicity against a panel of eight human cancer cell lines known to possess the Hedgehog Signalling Pathway (HSP) components, as well as the seminoma TCAM-2 cell line.
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Affiliation(s)
- Trieu N. Trinh
- Chemistry
- Priority Research Centre for Chemical Biology
- University of Newcastle
- Callaghan
- Australia
| | - Eileen A. McLaughlin
- Biology
- Priority Research Centre for Chemical Biology
- University of Newcastle
- Callaghan
- Australia
| | - Mohammed K. Abdel-Hamid
- Chemistry
- Priority Research Centre for Chemical Biology
- University of Newcastle
- Callaghan
- Australia
| | - Christopher P. Gordon
- Nanoscale Organization and Dynamics Group
- School of Science and Health
- University of Western Sydney
- Penrith South DC
- Australia
| | - Ilana R. Bernstein
- Biology
- Priority Research Centre for Chemical Biology
- University of Newcastle
- Callaghan
- Australia
| | - Victoria Pye
- Biology
- Priority Research Centre for Chemical Biology
- University of Newcastle
- Callaghan
- Australia
| | - Peter Cossar
- Chemistry
- Priority Research Centre for Chemical Biology
- University of Newcastle
- Callaghan
- Australia
| | | | - Adam McCluskey
- Chemistry
- Priority Research Centre for Chemical Biology
- University of Newcastle
- Callaghan
- Australia
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16
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Greco R, Goessler W, Cantillo D, Kappe CO. Benchmarking Immobilized Di- and Triarylphosphine Palladium Catalysts for Continuous-Flow Cross-Coupling Reactions: Efficiency, Durability, and Metal Leaching Studies. ACS Catal 2015. [DOI: 10.1021/cs5020089] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Roberto Greco
- Institute of Chemistry, University of Graz, NAWI
Graz, Heinrichstrasse 28, A-8010 Graz, Austria
| | - Walter Goessler
- Institute of Chemistry, University of Graz, NAWI
Graz, Heinrichstrasse 28, A-8010 Graz, Austria
| | - David Cantillo
- Institute of Chemistry, University of Graz, NAWI
Graz, Heinrichstrasse 28, A-8010 Graz, Austria
| | - C. Oliver Kappe
- Institute of Chemistry, University of Graz, NAWI
Graz, Heinrichstrasse 28, A-8010 Graz, Austria
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17
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Cossar PJ, Hizartzidis L, Simone MI, McCluskey A, Gordon CP. The expanding utility of continuous flow hydrogenation. Org Biomol Chem 2015; 13:7119-30. [DOI: 10.1039/c5ob01067e] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
There has been an increasing body of evidence that flow hydrogenation enhances reduction outcomes across a wide range of synthetic transformations.
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Affiliation(s)
- Peter J. Cossar
- Centre for Chemical Biology
- Chemistry Building
- School of Environmental and Life Science
- The University of Newcastle
- University Drive
| | - Lacey Hizartzidis
- Centre for Chemical Biology
- Chemistry Building
- School of Environmental and Life Science
- The University of Newcastle
- University Drive
| | - Michela I. Simone
- Centre for Chemical Biology
- Chemistry Building
- School of Environmental and Life Science
- The University of Newcastle
- University Drive
| | - Adam McCluskey
- Centre for Chemical Biology
- Chemistry Building
- School of Environmental and Life Science
- The University of Newcastle
- University Drive
| | - Christopher P. Gordon
- Nanoscale Organisation and Dynamics Group
- School of Science and Health
- University of Western Sydney
- Penrith
- Australia
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