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Das BC, Adil Shareef M, Das S, Nandwana NK, Das Y, Saito M, Weiss LM. Boron-Containing heterocycles as promising pharmacological agents. Bioorg Med Chem 2022; 63:116748. [PMID: 35453036 DOI: 10.1016/j.bmc.2022.116748] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 03/16/2022] [Accepted: 04/08/2022] [Indexed: 11/28/2022]
Abstract
The incorporation of the "magic" boron atom has been established as an important new strategy in the field of medicinal chemistry as boron compounds have been shown to form various bonds with their biological targets. Currently, a number of boron-based drugs (e.g. bortezomib, crisaborole, and tavaborole) have been FDA approved and are in the clinic, and several other boron-containing compounds are in clinical trials. Boron-based heterocycles have an incredible potential in the ongoing quest for new therapeutic agents owing to their plethora of biological activities and useful pharmacokinetic profiles. The present perspective is intended to review the pharmacological applications of boron-based heterocycles that have been published. We have classified these compounds into groups exhibiting shared pharmacological activities and discussed their corresponding biological targets focusing mainly on the most potent therapeutic compounds.
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Affiliation(s)
- Bhaskar C Das
- Arnold and Marie Schwartz College of Pharmacy and Health Sciences, Long Island University, Brooklyn, NY, USA; Department of Medicine and Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
| | - Mohammed Adil Shareef
- Arnold and Marie Schwartz College of Pharmacy and Health Sciences, Long Island University, Brooklyn, NY, USA
| | - Sasmita Das
- Arnold and Marie Schwartz College of Pharmacy and Health Sciences, Long Island University, Brooklyn, NY, USA
| | - Nitesh K Nandwana
- Arnold and Marie Schwartz College of Pharmacy and Health Sciences, Long Island University, Brooklyn, NY, USA
| | - Yogarupa Das
- Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY 10962, USA
| | - Mariko Saito
- Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY 10962, USA
| | - Louis M Weiss
- Department of Medicine, Division of Infectious Diseases and Department of Pathology Division of Parasitology and Tropical Medicine, Albert Einstein College of Medicine, Bronx NY-10461, USA
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2
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González-Hernández A, León-Negrete A, Galván-Hidalgo JM, Gómez E, Barba V. Hexacyclic monomeric boronates derived from tridentate shiff-base ligands fused by dative N→B bond. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127779] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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3
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Escobedo-González R, Vázquez Cabañas AV, Martínez González A, Mendoza Sánchez P, Saavedra-Leos Z, Cruz-Olivares J, Nava Serrano J, Martínez J, Miranda Ruvalcaba R. Green Approach Extraction of Perezone from the Roots of Acourtia platyphilla (A. Grey): A Comparison of Four Activating Modes and Supercritical Carbon Dioxide. MOLECULES (BASEL, SWITZERLAND) 2019; 24:molecules24173035. [PMID: 31438606 PMCID: PMC6749496 DOI: 10.3390/molecules24173035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 08/15/2019] [Accepted: 08/15/2019] [Indexed: 11/16/2022]
Abstract
Perezone, a sesquiterpene quinone, is a very important molecule due to its pharmacological activities in addition to the fact that it is considered to be the first secondary metabolite isolated in the new world (America–Mexico, 1852). This study aims to offer a green comparative study about the extraction of the target molecule from the roots of the vegetable specimen Acourtia platyphilla (A. Grey). The study was performed comparing five different modes of extraction: supercritical CO2, electromagnetic infrared and microwave irradiations, mechanical-wave ultrasound versus typical mantle heating procedure. An exhaustive comparative-discussion of the obtained results is provided. It is worth noting that the corresponding quantifications were established using 1H NMR, correlating appropriately the integrals of the vinylic proton H-6 of perezone with the aromatic singlet of p-dinitrobenzene employed as an internal reference. It is also important to highlight that the four presented procedures are novel modes to extract perezone. Finally, a complementary study about the solubility of the target sesquiterpene quinone related to the use of supercritical CO2 is also reported.
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Affiliation(s)
- René Escobedo-González
- Department of industrial maintenance and nanotechnology, Technological University of Juarez City, Ciudad Juarez, Chihuahua 32695, Mexico
| | - Andrea Vázquez Vázquez Cabañas
- Department of Chemistry, Faculty of Superior Studies Cuautitlan, Campus 1, Autonomous National University of Mexico, Cuautitlan Izcalli, Mexico State 54740, Mexico
| | - Armando Martínez González
- Department of Chemistry, Faculty of Superior Studies Cuautitlan, Campus 1, Autonomous National University of Mexico, Cuautitlan Izcalli, Mexico State 54740, Mexico
| | - Pablo Mendoza Sánchez
- Department of Chemistry, Faculty of Superior Studies Cuautitlan, Campus 1, Autonomous National University of Mexico, Cuautitlan Izcalli, Mexico State 54740, Mexico
| | - Zenaida Saavedra-Leos
- Academic Coordination, Altiplano Region, Autonomous University of San Luis Potosi, Road Cedral km. 5+600, Matehuala, San Luis Potosi 78700, Mexico
| | - Julián Cruz-Olivares
- Chemistry Faculty, Autonomous University of Mexico State, Toluca, State of Mexico 501020, Mexico
| | - Juan Nava Serrano
- Biological Science National School, National Polytechnic Institute, Mexico City 11340, Mexico
| | - Joel Martínez
- Chemistry Science Faculty, Autonomous University of San Luis, Av. Dr. Manuel Nava 6, State of San Luis Potosi 78210, Mexico
| | - René Miranda Ruvalcaba
- Department of Chemistry, Faculty of Superior Studies Cuautitlan, Campus 1, Autonomous National University of Mexico, Cuautitlan Izcalli, Mexico State 54740, Mexico.
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4
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Viswanathan A, Sebastianelli G, Brown K, Raunio J, Sipilä V, Yli-Harja O, Candeias NR, Kandhavelu M. In vitro anti-glioblastoma activity of L-valine derived boroxazolidones. Eur J Pharmacol 2019; 854:194-200. [PMID: 30981767 DOI: 10.1016/j.ejphar.2019.04.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/05/2019] [Accepted: 04/08/2019] [Indexed: 10/27/2022]
Abstract
In the present study, a series of L-valine derived boroxazolidones, previously synthesized and reported to have residual activity in a human epithelial cell line, have been evaluated in vitro for their anti-glioblastoma activity. A boroxazolidone derivative containing 2,4-difluorophenyl moieties (6) was found to have higher cytotoxicity than the standard drug, Temozolomide (TMZ). Compound 6 was found to exhibit dose-dependent growth inhibitory effects with an IC50 of 49 μM and 53 μM for LN229 and SNB19 cells, respectively. Additionally, 6 was assessed for its role in apoptosis, caspase 3/7 activation and oxidative stress in SNB19 and LN229 cells. SNB19 cells treated with 6 showed 45.3% apoptosis in the population, while TMZ had 24.7%. In LN229 cells, the percentage of apoptotic cells treated with compound 6 and TMZ were the same. Both 6 and TMZ induced apoptosis through the activation of caspase 3/7 in SNB19 and LN229 cells. Interestingly, 6 exhibited a higher effectivity in promoting reactive oxygen species production in LN229, while it was 6-fold less in SNB19. Boroxazolidone-treated GBM cell lines increased reactive oxygen species production, suggesting that such species may be interlinked with the observed programmed cell death. Additionally, the treatment of both GBM cell lines with 6 led to G2/M phase arrest. The magnitude of anti-GBM effect of 6 is significantly higher than the known chemotherapeutic agent TMZ. This work further demonstrates the anticancer properties of L-valine derived boroxazolidones, adding another potential derivative to the collection of promising chemotherapeutic agents for GBM treatment.
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Affiliation(s)
- Anisha Viswanathan
- Molecular Signaling Lab, Faculty of Medicine and Health Technology, Tampere University and BioMediTech, P.O. Box 553, 33101 Tampere, Finland
| | - Giulia Sebastianelli
- Molecular Signaling Lab, Faculty of Medicine and Health Technology, Tampere University and BioMediTech, P.O. Box 553, 33101 Tampere, Finland
| | - Kenna Brown
- Molecular Signaling Lab, Faculty of Medicine and Health Technology, Tampere University and BioMediTech, P.O. Box 553, 33101 Tampere, Finland
| | - Jenna Raunio
- Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33101 Tampere, Finland
| | - Vili Sipilä
- Molecular Signaling Lab, Faculty of Medicine and Health Technology, Tampere University and BioMediTech, P.O. Box 553, 33101 Tampere, Finland
| | - Olli Yli-Harja
- Computational Systems Biology Group, Faculty of Medicine and Health Technology, Tampere University and BioMedi Tech, P.O. Box 553, 33101 Tampere, Finland; Institute for Systems Biology, 1441N 34th Street, Seattle, WA 98103-8904, USA
| | - Nuno R Candeias
- Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33101 Tampere, Finland.
| | - Meenakshisundaram Kandhavelu
- Molecular Signaling Lab, Faculty of Medicine and Health Technology, Tampere University and BioMediTech, P.O. Box 553, 33101 Tampere, Finland.
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5
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Rosas J, Martínez JO, Alonso P, Miranda R, Velasco L, Rubio-Pérez L, Pérez FJ. Alternative mass spectrometry techniques for the validation of the fragmentation pattern of capsaicin and dihydrocapsaicin. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2019; 33:635-640. [PMID: 30668887 DOI: 10.1002/rcm.8388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 12/11/2018] [Accepted: 01/12/2019] [Indexed: 06/09/2023]
Abstract
RATIONALE Capsaicinoids are prevalent secondary metabolites in many natural and synthetic pharmacological compounds. To date, several soft ionization studies related to capsaicinoids have been reported; they all proposed a common fragmentation pattern based on a rearrangement of the aromatic double bonds and the fragmentation of the various positional acyl chains. However, the mechanism has never been validated by high-resolution analyses. Consequently, in this work, a validated fragmentation mechanism of the main capsaicinoids, capsaicin (1) and dihydrocapsaicin (2), is offered. METHODS In order to propose and validate a common electron ionization (EI) fragmentation mechanism for the target analytes, the following mass spectrometric methods were employed: collision-induced dissociation (CID) by means of linked scans (LS), reinforcing the methodology by high-resolution mass spectrometry (HRMS), in addition to appropriate deuterium-labeled experiments performed using gas chromatography/mass spectrometry (GC/MS) and direct analysis in real time (DART). RESULTS In a first stage, a common EI fragmentation pattern comprising two pathways was proposed for compounds 1 and 2; then, the suggested mechanism was validated by CID-LS together with HRMS complemented by DART-deuterium-labeling studies. The obtained results are indicative that the corresponding molecular ions were conveniently observed, m/z 305 and m/z 307; it is worth noting that the common base peak is in correspondence with a tropylium ion derivative (m/z 137), as a consequence of a McLafferty rearrangement. In addition to these highlighted fragments, other common ions, m/z 122 and m/z 94, and their corresponding trajectory, were confirmed using the same approach. Finally, the proposed mechanism was complementarily validated by deuterium-labeling studies, taking into account the two exchangeable hydrogens present in the phenolic and the amidic moieties. CONCLUSIONS A common validated EI fragmentation pattern for both capsaicin and dihydrocapsaicin was established using appropriated mass spectrometric methods together with convenient hydrogen/deuterium labeling. This study provides a new alternative to validate mechanisms of fragmentation of important natural products.
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Affiliation(s)
- Julieta Rosas
- Departamento de Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán-UNAM, Estado de México, 54740, Mexico
| | - Joel O Martínez
- Facultad de Ciencias Químicas, Posgrado en Ciencias de Ingeniería Química-UASLP, San Luis Potosí, 78210, Mexico
| | - Pedro Alonso
- Facultad de Ciencias Químicas, Posgrado en Ciencias de Ingeniería Química-UASLP, San Luis Potosí, 78210, Mexico
| | - René Miranda
- Departamento de Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán-UNAM, Estado de México, 54740, Mexico
| | - Luis Velasco
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Coyoacán, D. F., 04510, Mexico
| | - Laura Rubio-Pérez
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Coyoacán, D. F., 04510, Mexico
| | - Francisco J Pérez
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Coyoacán, D. F., 04510, Mexico
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6
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Guan C, Huang L, Ren C, Zou G. Development of a Telescoped Process for Preparation of N,O-Chelated Diarylborinates. Org Process Res Dev 2018. [DOI: 10.1021/acs.oprd.8b00109] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Changwei Guan
- Department of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, China
| | - Lingyun Huang
- Department of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, China
| | - Chao Ren
- Department of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, China
| | - Gang Zou
- Department of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, China
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7
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Synthesis and boron interaction of new amino acid containing phthalocyanines and the precursor. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.04.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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8
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A DFT Study of the Geometrical, Spectroscopical and Reactivity Properties of Diindolylmethane-Phenylboronic Acid Hybrids. MOLECULES (BASEL, SWITZERLAND) 2017; 22:molecules22101744. [PMID: 29039759 PMCID: PMC6151590 DOI: 10.3390/molecules22101744] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 10/12/2017] [Indexed: 01/11/2023]
Abstract
The structure of the ortho-, meta- and para- hybrid diindolylmethane-phenylboronic acids and their interactions were optimized with by a quantum chemical method, using density functional theory at the (DFT) level. Thus, infrared bands were assigned based on the scaled theoretical wavenumbers by correlating the respective experimental data of the molecules. In addition, the corresponding 1H-/13C-/11B-NMR experimental and theoretical chemical shifts were correlated. The target molecules showed a poor treatment of the OH shifts in the GIAO method due to the absence of explicit solvent effects in these calculations; therefore, they were explicitly considered with acetone molecules. Moreover, the electron density at the hydrogen bond critical point increased, generating stabilization energy, from weak to moderate or weak to strong, serving as an indicator of the strength of the hydrogen bond between the different intermolecular interactions. Finally, some properties related to the reactive behavior of the target molecules associated with their cytotoxic effects and metabolic pathways were also calculated.
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9
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Palladium-catalyzed cross-coupling of aryl chlorides with O, N-chelate stabilized diarylborinates. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.05.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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10
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Escobedo-González R, Vargas-Requena CL, Moyers-Montoya E, Aceves-Hernández JM, Nicolás-Vázquez MI, Miranda-Ruvalcaba R. In silico Study of the Pharmacologic Properties and Cytotoxicity Pathways in Cancer Cells of Various Indolylquinone Analogues of Perezone. Molecules 2017; 22:E1060. [PMID: 28672837 PMCID: PMC6152338 DOI: 10.3390/molecules22071060] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 06/16/2017] [Accepted: 06/19/2017] [Indexed: 12/23/2022] Open
Abstract
Several indolylquinone analogues of perezone, a natural sesquiterpene quinone, were characterized in this work by theoretical methods. In addition, some physicochemical, toxicological and metabolic properties were predicted using bioinformatics software. The predicted physicochemical properties are in agreement with the solubility and cLogP values, the penetration across the cell membrane, and absorption values, as well as with a possible apoptosis-activated mechanism of cytotoxic action. The toxicological predictions suggest no mutagenic, tumorigenic or reproductive effects of the four target molecules. Complementarily, the results of a performed docking study show high scoring values and hydrogen bonding values in agreement with the cytotoxicity IC50 value ranking, i.e: indolylmenadione > indolylperezone > indolylplumbagine > indolylisoperezone. Consequently, it is possible to suggest an appropriate apoptotic pathway for each compound. Finally, potential metabolic pathways of the molecules were proposed.
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Affiliation(s)
- René Escobedo-González
- Departamento de Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli, Estado de México, C.P. 54740, México.
| | - Claudia Lucia Vargas-Requena
- Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, Henry Dunant #4600, Ciudad Juárez 32310, México.
| | - Edgar Moyers-Montoya
- Instituto de Ingeniería y tecnología, Universidad Autónoma de Ciudad Juárez, Ave. Del Charro 450 Norte, Ciudad Juárez 32310, México.
| | - Juan Manuel Aceves-Hernández
- Departamento de Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli, Estado de México, C.P. 54740, México.
| | - María Inés Nicolás-Vázquez
- Departamento de Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli, Estado de México, C.P. 54740, México.
| | - René Miranda-Ruvalcaba
- Departamento de Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli, Estado de México, C.P. 54740, México.
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11
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Raunio J, Mannoja J, Nguyen T, Ahmad N, Kemppainen N, Franzén RG, Kandhavelu M, Candeias NR. Base catalysed N-functionalisation of boroxazolidones. RSC Adv 2017. [DOI: 10.1039/c7ra03266h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A method for the condensation of boroxazolidones derived froml-valine with aromatic aldehydes, catalysed by 1,5,7-triazabicyclo[4.4.0]dec-5-ene was developed.
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Affiliation(s)
- J. Raunio
- Laboratory of Chemistry and Bioengineering
- Tampere University of Technology
- 33101 Tampere
- Finland
| | - J. Mannoja
- Laboratory of Chemistry and Bioengineering
- Tampere University of Technology
- 33101 Tampere
- Finland
| | - T. Nguyen
- Molecular Signalling Lab
- TUT-BMT Unit
- Tampere University of Technology
- 33101 Tampere
- Finland
| | - N. Ahmad
- Molecular Signalling Lab
- TUT-BMT Unit
- Tampere University of Technology
- 33101 Tampere
- Finland
| | - N. M. Kemppainen
- Laboratory of Chemistry and Bioengineering
- Tampere University of Technology
- 33101 Tampere
- Finland
| | - R. G. Franzén
- Laboratory of Chemistry and Bioengineering
- Tampere University of Technology
- 33101 Tampere
- Finland
| | - M. Kandhavelu
- Molecular Signalling Lab
- TUT-BMT Unit
- Tampere University of Technology
- 33101 Tampere
- Finland
| | - N. R. Candeias
- Laboratory of Chemistry and Bioengineering
- Tampere University of Technology
- 33101 Tampere
- Finland
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12
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Green Production of Indolylquinones, Derivatives of Perezone, and Related Molecules, Promising Antineoplastic Compounds. J CHEM-NY 2016. [DOI: 10.1155/2016/3870529] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
A green approach to produce the indolyl derivatives from four natural quinones (perezone, isoperezone, menadione, and plumbagin) was performed; in this regard, a comparative study was accomplished among the typical mantle heating and three nonconventional activating modes of reaction (microwave, near-infrared, and high speed ball milling or tribochemical), under solventless conditions and using bentonitic clay as a catalyst. In addition, the tribochemical production of isoperezone from perezone is also commented on. It is also worth noting that the cytotoxicity of the synthesized indolylquinones in human breast cancer cell was tested by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, with the 3-indolylisoperezone being the most active. The structural attribution of the target molecules was performed by typical spectroscopic procedures; moreover, the experimental and computed1H and13C NMR chemical shifts data, with previous acquisition of the corresponding minimum energetic structures, were in good agreement.
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13
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Martínez J, Abarca V, Pérez FJ, Carranza V, Miranda R. Thioglycerol matrix interactions in the positive ion fast atom bombardment mass spectrometry of several Hantzsch and Biginelli ester derivatives of boronic acids. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2013; 27:1573-1578. [PMID: 23722692 DOI: 10.1002/rcm.6604] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Revised: 02/28/2013] [Accepted: 04/19/2013] [Indexed: 06/02/2023]
Abstract
RATIONALE Fast atom bombardment (FAB) ionization is a valuable tool for analyzing non-volatile or thermally labile compounds when harder ionization methods (EI or CI) have been unsuccessful. Unexpected interactions between matrix and analyte may, however, occur in FAB ionization leading to the formation of artifacts whose structures have to be determined. METHODS We used esters synthesized by our research group following green chemistry protocols. Artifacts relating to the target molecules were produced in the solvent cage using positive ion FAB using thioglycerol as the matrix and analyzed by accurate mass measurement. RESULTS Through interactions between thioglycerol and the boron atom, various adducts associated with boron-containing Hantzsch and Biginelli ester derivatives appeared in the FAB mass spectra. These interactions must arise in a solvent cage involving a Lewis acid-base bond. Accurate mass determinations of these adducts confirmed the presence of the target molecules. CONCLUSIONS Interactions between the thioglycerol matrix and the eleven boron-containing Hantzsch and Biginelli ester derivatives in addition to the three reagents were seen in their FAB(+) spectra. These interactions, together with their accurate mass determinations, allowed us to determine the structures of the new molecules.
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Affiliation(s)
- Joel Martínez
- Departamento de Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán-UNAM, Estado de México, México
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14
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Dandia A, Parewa V, Gupta SL, Rathore KS. Cobalt doped ZnS nanoparticles as a recyclable catalyst for solvent-free synthesis of heterocyclic privileged medicinal scaffolds under infrared irradiation. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcata.2013.02.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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15
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Green approach—multicomponent production of boron—containing hantzsch and biginelli esters. Int J Mol Sci 2013; 14:2903-15. [PMID: 23364612 PMCID: PMC3588021 DOI: 10.3390/ijms14022903] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 12/19/2012] [Accepted: 01/04/2013] [Indexed: 11/16/2022] Open
Abstract
Multicomponent reactions are excellent methods that meet the requirements of green chemistry, by reducing the number of steps, and consequently reducing purification requirements. Accordingly, in this work, 11 novel hybrid-boron-containing molecules, namely eight 1,4-dihydropyridines and three 3,4-dihydropyrimidinones, derived from formylphenylboronic acids (ortho, meta and para), were obtained using a green approach, involving H-4CR and B-3CR practices, in the presence of ethanol, which is a green solvent, and using three comparatively different modes of activation (mantle heating, yield 3%-7% in 24 h, Infrared Radiation (IR) irradiation, yield 12%-17% in 12 h, and microwave irradiation, yield 18%-80%, requiring very low reaction times of 0.25-0.33 h). In addition, as a green-approach is offered, a convenient analysis, of the 12 green chemistry principles for the overall procedure was performed. Finally, since all the products are new, characterizations were carried out using common analytic procedures (1H, 11B, and 13C NMR, FAB+MS, HRMS, and IR). The accurate mass data of unexpected ions related to interactions between thioglycerol and the expected products, in the FAB+-mode, enabled unequivocal characterization of the target molecules.
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16
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A Green Approach to the Production of Hybrid Diindolylmethane-Phenylboronic Acids via a 3MCR: Promising Antineoplasic Molecules. J CHEM-NY 2013. [DOI: 10.1155/2013/531208] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The current role of the “Green Chemistry Protocol” in multicomponent reactions is first highlighted. Then, the green approach to the production of three novel hybrid diindolylmethanes-phenylboronic acids via a 3MCR is discussed, which features the following: solventless conditions, the use of microwave irradiation to activate the reactions, the absence of catalyst, and an efficient atom economy. The products were achieved with moderate yields (41–61%) within a short time frame (5 min) and appropriately characterized by elemental analysis and spectroscopic methods (NMR:1H,13C,11B; MS: EI, CI, FAB+, HRMS). During the FAB+MS determinations, various artifacts that are associated with the boron atom via an interaction with thioglycerol from the matrix were noted in the corresponding FAB+mass spectra; in addition, the accurate mass determination of these adducts unequivocally confirmed the presence of the target molecules. Moreover, the activity of these target molecules was evaluated in the presence of six cancer cell lines (U251 = glia of the central nerve system, PC-3 = prostate, K562 = leukemia, HCT-15 = colon, MCF-7 = breast, and SKLU-1 = lung), which resulted in themeta-regioisomer being the most active. Finally, the products were also analyzed using computational chemistry in order to determine their most stable geometries and reactivities by computing the respective molecular electrostatic potentials.
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Noguez MO, Marcelino V, Rodríguez H, Martín O, Martínez JO, Arroyo GA, Pérez FJ, Suárez M, Miranda R. Infrared assisted production of 3,4-dihydro-2(1H)-pyridones in solvent-free conditions. Int J Mol Sci 2011; 12:2641-9. [PMID: 21731463 PMCID: PMC3127139 DOI: 10.3390/ijms12042641] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 03/14/2011] [Accepted: 03/30/2011] [Indexed: 11/16/2022] Open
Abstract
A green approach for the synthesis of a set of ten 4-aryl substituted-5-alcoxy carbonyl-6-methyl-3,4-dihydro-2(1H)-pyridones using Meldrum’s acid has been devised, the absence of solvent and the activation with infrared irradiation in addition to a multicomponent protocol are the main reaction conditions. The transformations proceeded with moderated yields (50–75%) with a reasonable reaction rate (3 h). It is worth noting that two novel molecules of the new class of the bis-3,4-dihydropyridones were also obtained. In addition, a comparison without the use of infrared irradiation was performed.
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Affiliation(s)
- M. Olivia Noguez
- Departamento de Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán-UNAM, Estado de México, 54754, Mexico; E-Mails: (M.O.N.); (J.O.M.); (G.A.A.)
| | - Vanessa Marcelino
- Departamento de Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán-UNAM, Estado de México, 54754, Mexico; E-Mails: (M.O.N.); (J.O.M.); (G.A.A.)
| | - Hortensia Rodríguez
- Laboratorio de Síntesis Orgánica, Facultad de Química, Universidad de la Habana, 10400 Ciudad Habana, Cuba; E-Mails: (H.R.); (O.M.); (M.S.)
| | - Osnieski Martín
- Laboratorio de Síntesis Orgánica, Facultad de Química, Universidad de la Habana, 10400 Ciudad Habana, Cuba; E-Mails: (H.R.); (O.M.); (M.S.)
| | - Joel O. Martínez
- Departamento de Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán-UNAM, Estado de México, 54754, Mexico; E-Mails: (M.O.N.); (J.O.M.); (G.A.A.)
| | - Gabriel A. Arroyo
- Departamento de Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán-UNAM, Estado de México, 54754, Mexico; E-Mails: (M.O.N.); (J.O.M.); (G.A.A.)
| | - Francisco J. Pérez
- Instituto de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, D.F., 04510, Mexico; E-Mail:
| | - Margarita Suárez
- Laboratorio de Síntesis Orgánica, Facultad de Química, Universidad de la Habana, 10400 Ciudad Habana, Cuba; E-Mails: (H.R.); (O.M.); (M.S.)
| | - René Miranda
- Departamento de Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán-UNAM, Estado de México, 54754, Mexico; E-Mails: (M.O.N.); (J.O.M.); (G.A.A.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +52-5556232056; Fax: +52-5556232024
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Pharmacokinetics of diphenylboroxazolidones of L-α-amino acids with activity on the CNS: quantification in rat DBS by UPLC–MS/MS. Bioanalysis 2011; 3:439-48. [DOI: 10.4155/bio.10.208] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background: A growing number of boron-containing compounds exhibit many important biological activities; of particular interest are the α-amino acid borinic derivatives with activity in the CNS. A validated, sensitive and specific UPLC–MS/MS technique for quantification of the diphenylboroxazolidones of glycine (DBPX-gly), L-aspartate (DPBX-L-asp) and L-glutamate (DPBX-L-glu) in dried blood spots (DBSs) is presented. Results: The most intense signal corresponds to compounds with 11B. The extraction procedure was liquid elution of 3.2-mm punched DBSs with acetonitrile:aqueous formic acid 0.1% (80:20 v/v). Assays proved to be linear, falling accurately and precisely within the range of 0.3–50 µg/ml for DPBX-L-asp and DPBX-L-glu and 0.1–5 µg/ml for DBPX-gly. Chromatograms exhibit clean 2.0-min running time peaks and S/N ratios for the LLOQ were approximately 15:1. The technique was used to evaluate the pharmacokinetics of the molecules and to correlate these with timecourse toxic effects. Conclusion: DBSs represent an advantage for the collection of small volumes of samples, and also in terms of processing and storage. UPLC–MS/MS allow us not only to identify the isotopic pattern of boron in DBPX, but also to quantify them with accuracy and specificity. Pharmacokinetics of these molecules exhibit a high apparent volume of distribution; it suggests a preference of DPBX-amino acids for fatty tissues such as the CNS.
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Theoretical Characterization of Three 2,2-Diphenyl-1,3,2-oxazaborolidin-5-ones: Molecules with Fungicide Activities. MOLBANK 2009. [DOI: 10.3390/m600] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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