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Patnaik S, Kanbur U, Ellern A, Sadow AD. Hydrosilane σ-Adduct Intermediates in an Adaptive Zinc-Catalyzed Cross-dehydrocoupling of Si-H and O-H Bonds. Chemistry 2021; 27:10428-10436. [PMID: 33876468 PMCID: PMC8362191 DOI: 10.1002/chem.202101146] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Indexed: 11/09/2022]
Abstract
Three-coordinate Ph BOXMe 2 ZnR (Ph BOXMe 2 =phenyl-(4,4-dimethyl-oxazolinato; R=Me: 2 a, Et: 2 b) catalyzes the dehydrocoupling of primary or secondary silanes and alcohols to give silyl ethers and hydrogen, with high turnover numbers (TON; up to 107 ) under solvent-free conditions. Primary and secondary silanes react with small, medium, and large alcohols to give various degrees of substitution, from mono- to tri-alkoxylation, whereas tri-substituted silanes do not react with MeOH under these conditions. The effect of coordinative unsaturation on the behavior of the Zn catalyst is revealed through a dramatic variation of both rate law and experimental rate constants, which depend on the concentrations of both the alcohol and hydrosilane reactants. That is, the catalyst adapts its mechanism to access the most facile and efficient conversion. In particular, either alcohol or hydrosilane binds to the open coordination site on the Ph BOXMe 2 ZnOR catalyst to form a Ph BOXMe 2 ZnOR(HOR) complex under one set of conditions or an unprecedented σ-adduct Ph BOXMe 2 ZnOR(H-SiR'3 ) under other conditions. Saturation kinetics provide evidence for the latter species, in support of the hypothesis that σ-bond metathesis reactions involving four-centered electrocyclic 2σ-2σ transition states are preceded by σ-adducts.
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Affiliation(s)
- Smita Patnaik
- Department of ChemistryIowa State UniversityAmesIA 50011USA
- US Department of Energy Ames LaboratoryIowa State UniversityAmesIA 50011USA
| | - Uddhav Kanbur
- Department of ChemistryIowa State UniversityAmesIA 50011USA
- US Department of Energy Ames LaboratoryIowa State UniversityAmesIA 50011USA
| | - Arkady Ellern
- Department of ChemistryIowa State UniversityAmesIA 50011USA
| | - Aaron D. Sadow
- Department of ChemistryIowa State UniversityAmesIA 50011USA
- US Department of Energy Ames LaboratoryIowa State UniversityAmesIA 50011USA
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2
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Xu D, Chen J, Li J, Zhu Y, Wu S, Zhang J, Liu X, Fan B. 4‐NH
2
‐TEMPO Catalyzed Dehydrogenative Silylation of Alcohols. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Dandan Xu
- Key Laboratory of Chemistry in Ethnic Medicinal Resources Yunnan Minzu University 650500 Kunming Yunnan P. R. China
| | - Jingchao Chen
- Key Laboratory of Chemistry in Ethnic Medicinal Resources Yunnan Minzu University 650500 Kunming Yunnan P. R. China
| | - Jiayan Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources Yunnan Minzu University 650500 Kunming Yunnan P. R. China
| | - Yuanbin Zhu
- Yunnan Tiefeng High Tech Mining Chemicals Co.Ltd Qingfeng industrial park 651200 Lufeng P. R. China
| | - Shiyuan Wu
- Yunnan Tiefeng High Tech Mining Chemicals Co.Ltd Qingfeng industrial park 651200 Lufeng P. R. China
| | - Jianqiang Zhang
- College of Biology and Chemistry Puer University 665000 Puer Yunnan P. R. China
| | - Xingyuan Liu
- College of Biology and Chemistry Puer University 665000 Puer Yunnan P. R. China
| | - Baomin Fan
- Key Laboratory of Chemistry in Ethnic Medicinal Resources Yunnan Minzu University 650500 Kunming Yunnan P. R. China
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3
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Lv H, Laishram RD, Chen J, Khan R, Zhu Y, Wu S, Zhang J, Liu X, Fan B. Photocatalyzed cross-dehydrogenative coupling of silanes with alcohols and water. Chem Commun (Camb) 2021; 57:3660-3663. [PMID: 33724277 DOI: 10.1039/d1cc00129a] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An efficient method for the dehydrogenative coupling of silanes with alcohols under photocatalysis was developed. The reaction proceeded in the presence of Ru(bpy)3Cl2 (0.5 mol%) under visible light irradiation in acetonitrile at room temperature. The developed methodology was also applicable for the synthesis of silanols using water as a coupling partner.
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Affiliation(s)
- Haiping Lv
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Yuehua Street, Kunming, 650500, China.
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4
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Valdomir G, Fernández MDLÁ, Lagunes I, Padrón JI, Martín VS, Padrón JM, Davyt D. Oxa/thiazole-tetrahydropyran triazole-linked hybrids with selective antiproliferative activity against human tumour cells. NEW J CHEM 2018. [DOI: 10.1039/c8nj02388c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Inspired by marine bioactive compounds, the principle of molecular hybridization was applied combining diverse heterocyclic systems by a triazole ring, to produce new and more active compounds.
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Affiliation(s)
- Guillermo Valdomir
- Departamento de Química Orgánica
- Facultad de Química
- UdelaR
- 11800 Montevideo
- Uruguay
| | | | - Irene Lagunes
- Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG)
- Centro de Investigaciones Biomédicas de Canarias (CIBICAN)
- Universidad de La Laguna
- 38206 La Laguna
- Spain
| | - Juan I. Padrón
- Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG)
- Centro de Investigaciones Biomédicas de Canarias (CIBICAN)
- Universidad de La Laguna
- 38206 La Laguna
- Spain
| | - Víctor S. Martín
- Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG)
- Centro de Investigaciones Biomédicas de Canarias (CIBICAN)
- Universidad de La Laguna
- 38206 La Laguna
- Spain
| | - José M. Padrón
- Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG)
- Centro de Investigaciones Biomédicas de Canarias (CIBICAN)
- Universidad de La Laguna
- 38206 La Laguna
- Spain
| | - Danilo Davyt
- Departamento de Química Orgánica
- Facultad de Química
- UdelaR
- 11800 Montevideo
- Uruguay
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5
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Ramesh R, Reddy DS. Quest for Novel Chemical Entities through Incorporation of Silicon in Drug Scaffolds. J Med Chem 2017; 61:3779-3798. [DOI: 10.1021/acs.jmedchem.7b00718] [Citation(s) in RCA: 203] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Remya Ramesh
- CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110 025, India
| | - D. Srinivasa Reddy
- CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110 025, India
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6
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Embracing chemical and structural diversity with UCONGA: A universal conformer generation and analysis program. J Mol Graph Model 2017; 77:286-294. [PMID: 28915446 DOI: 10.1016/j.jmgm.2017.09.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Revised: 08/31/2017] [Accepted: 09/01/2017] [Indexed: 11/20/2022]
Abstract
Molecular properties depend on molecular structure, so the first step in any computational chemistry investigation is to generate all thermally accessible conformers. Typically it is necessary to make a trade-off between the number of conformers to be explored and the accuracy of the method used to calculate their energies. Ab initio potential energy surface scans can, in principle, be applied to any molecule, but their conformational cost scales poorly with both molecular size and dimensionality of the search space. Specialized conformer generation techniques rely on parameterized force fields and may also use knowledge-based rules for generating conformers, and are typically only available for drug-like organic molecules. Neither approach is well-suited to generating or identifying chemically sensible conformers for larger non-organic molecules. The Universal CONformer Generation and Analysis (UCONGA) program package fills this niche. It requires no parameters other than built-in atomic van der Waals radii to generate comprehensive ensembles of sterically-allowed conformers, for molecules of arbitrary composition and connectivity. Analysis scripts are provided to identify representative structures from clusters of similar conformers, which may be further refined by subsequent geometry optimization. This approach is particularly useful for molecules not described by parameterized force fields, as it minimizes the number of computationally intensive ab initio calculations required to characterize the conformer ensemble. We anticipate that UCONGA will be particularly useful for computational and structural chemists studying flexible non-drug-like molecules.
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7
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Biancalana L, Zacchini S, Ferri N, Lupo MG, Pampaloni G, Marchetti F. Tuning the cytotoxicity of ruthenium(ii) para-cymene complexes by mono-substitution at a triphenylphosphine/phenoxydiphenylphosphine ligand. Dalton Trans 2017; 46:16589-16604. [DOI: 10.1039/c7dt03385k] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The cytotoxic activities of novel Ru(ii) arene complexes with variably mono-substituted phosphine ligands have been assessed towards MDA-MB-231 and A2780 cancer cell lines.
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Affiliation(s)
- Lorenzo Biancalana
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56124 Pisa
- Italy
| | - Stefano Zacchini
- Dipartimento di Chimica Industriale “Toso Montanari”
- Università di Bologna
- I-40136 Bologna
- Italy
| | - Nicola Ferri
- Dipartimento di Scienze del Farmaco
- Università degli Studi di Padova
- 35131 Padova
- Italy
| | - Maria Giovanna Lupo
- Dipartimento di Scienze del Farmaco
- Università degli Studi di Padova
- 35131 Padova
- Italy
| | - Guido Pampaloni
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56124 Pisa
- Italy
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56124 Pisa
- Italy
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8
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Toutov AA, Betz KN, Haibach MC, Romine AM, Grubbs RH. Sodium Hydroxide Catalyzed Dehydrocoupling of Alcohols with Hydrosilanes. Org Lett 2016; 18:5776-5779. [DOI: 10.1021/acs.orglett.6b01687] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anton A. Toutov
- Arnold and Mabel Beckman
Laboratories of Chemical Synthesis, Division of Chemistry and Chemical
Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Kerry N. Betz
- Arnold and Mabel Beckman
Laboratories of Chemical Synthesis, Division of Chemistry and Chemical
Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Michael C. Haibach
- Arnold and Mabel Beckman
Laboratories of Chemical Synthesis, Division of Chemistry and Chemical
Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Andrew M. Romine
- Arnold and Mabel Beckman
Laboratories of Chemical Synthesis, Division of Chemistry and Chemical
Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Robert H. Grubbs
- Arnold and Mabel Beckman
Laboratories of Chemical Synthesis, Division of Chemistry and Chemical
Engineering, California Institute of Technology, Pasadena, California 91125, United States
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9
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Garro HA, Reta GF, Donadel OJ, Pungitore CR. Cytotoxic and Antitumor Activity of some Coumarin Derivatives. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601100926] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Several natural and synthetic coumarins were assayed against different cancer cell lines. Four of them have shown cytotoxicity against a panel of three human solid tumor cell lines (HeLa, T-47D, and WiDr) and a clearly activity/hydrophobicity relationship. Compound 13 proved to be the most active product in all cell lines tested, with values of 8.0 (±0.38) μM against HeLa cells and also able to inhibit Taq DNA polymerase. This dual activity of 13 makes it a candidate to be considered as a “lead” compound in the search for novel antitumor drugs.
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Affiliation(s)
- Hugo A. Garro
- Área de Química Orgánica, INTEQUI-CONICET-UNSL, 5700 San Luis, Argentina
| | - Guillermo F. Reta
- Área de Química Orgánica, INTEQUI-CONICET-UNSL, 5700 San Luis, Argentina
| | - Osvaldo J. Donadel
- Área de Química Orgánica, INTEQUI-CONICET-UNSL, 5700 San Luis, Argentina
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10
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Lo Re D, Jones L, Giralt E, Murphy P. Synthesis of an Orthogonally Protected Polyhydroxylated Cyclopentene from l-Sorbose. Chem Asian J 2016; 11:2035-40. [PMID: 27304425 DOI: 10.1002/asia.201600736] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Indexed: 11/06/2022]
Abstract
The use of l-sorbose in the synthesis of functionalized cyclopentene derivatives was accomplished. These cyclopentene derivatives are related to those found in naturally occurring jatrophane frameworks and in other bioactive compounds. The formation of allyl α-l-sorbopyranoside was a key synthetic step. Regioselective introduction of protecting groups was followed by the hydrolysis of the allyl glycoside to furnish a fully protected acyclic l-sorbose derivative. This acyclic intermediate was subsequently used to give an orthogonally protected polyhydroxylated cyclopentene, which has potential for further synthesis of bioactive compounds. The protected cyclopentene itself showed a clear cytotoxic activity when tested against a panel of human cancer cell lines (HT29, LS174T, SW620, A549, and HeLa cells).
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Affiliation(s)
- Daniele Lo Re
- School of Chemistry, National University of Ireland, Galway, University Road, Galway, Ireland.
| | - Leigh Jones
- School of Chemistry, National University of Ireland, Galway, University Road, Galway, Ireland
| | - Ernest Giralt
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, C/Baldiri Reixac 10, Barcelona, E-08028, Spain.,Department of Organic Chemistry, University of Barcelona, Marti i Franques 1-11, Barcelona, E-08028, Spain
| | - Paul Murphy
- School of Chemistry, National University of Ireland, Galway, University Road, Galway, Ireland.
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11
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Panayides JL, Mathieu V, Banuls LMY, Apostolellis H, Dahan-Farkas N, Davids H, Harmse L, Rey MEC, Green IR, Pelly SC, Kiss R, Kornienko A, van Otterlo WAL. Synthesis and in vitro growth inhibitory activity of novel silyl- and trityl-modified nucleosides. Bioorg Med Chem 2016; 24:2716-24. [PMID: 27157005 DOI: 10.1016/j.bmc.2016.04.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 04/14/2016] [Accepted: 04/19/2016] [Indexed: 12/17/2022]
Abstract
Seventeen silyl- and trityl-modified (5'-O- and 3',5'-di-O-) nucleosides were synthesized with the aim of investigating the in vitro antiproliferative activities of these nucleoside derivatives. A subset of the compounds was evaluated at a fixed concentration of 100μM against a small panel of tumor cell lines (HL-60, K-562, Jurkat, Caco-2 and HT-29). The entire set was also tested at varying concentrations against two human glioma lines (U373 and Hs683) to obtain GI50 values, with the best results being values of ∼25μM.
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Affiliation(s)
- Jenny-Lee Panayides
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, PO Wits, Johannesburg 2050, South Africa; Pioneering Health Sciences, CSIR Biosciences, PO Box 395, Pretoria 0001, South Africa
| | - Véronique Mathieu
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Laetitia Moreno Y Banuls
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Helen Apostolellis
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, PO Wits, Johannesburg 2050, South Africa
| | - Nurit Dahan-Farkas
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, PO Wits, Johannesburg 2050, South Africa
| | - Hajierah Davids
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, PO Wits, Johannesburg 2050, South Africa; Department of Biochemistry and Microbiology, Nelson Mandela Metropolitan University, PO Box 77000, Port Elizabeth 6031, South Africa
| | - Leonie Harmse
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, PO Wits, Johannesburg 2050, South Africa
| | - M E Christine Rey
- School of Molecular and Cellular Biology, University of the Witwatersrand, PO Wits, Johannesburg 2050, South Africa
| | - Ivan R Green
- Department of Chemistry and Polymer Science, Stellenbosch University, Stellenbosch, Matieland 7602, South Africa
| | - Stephen C Pelly
- Department of Chemistry and Polymer Science, Stellenbosch University, Stellenbosch, Matieland 7602, South Africa
| | - Robert Kiss
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Alexander Kornienko
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Willem A L van Otterlo
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, PO Wits, Johannesburg 2050, South Africa; Department of Chemistry and Polymer Science, Stellenbosch University, Stellenbosch, Matieland 7602, South Africa.
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12
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13
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Reta GF, Chiaramello AI, García C, León LG, Martín VS, Padrón JM, Tonn CE, Donadel OJ. Derivatives of grindelic acid: From a non-active natural diterpene to synthetic antitumor derivatives. Eur J Med Chem 2013; 67:28-38. [DOI: 10.1016/j.ejmech.2013.06.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2013] [Revised: 05/29/2013] [Accepted: 06/10/2013] [Indexed: 11/26/2022]
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14
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Zablotskaya A, Segal I, Popelis Y, Grinberga S, Shestakova I, Nikolajeva V, Eze D. Silyl modification of biologically active compounds. 13. Synthesis, cytotoxicity and antibacterial action ofN-methyl-N-(2-triorganylsiloxyethyl)-1,2,3,4-tetrahydro(iso)quinolinium iodides. Appl Organomet Chem 2012. [DOI: 10.1002/aoc.2952] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Izolda Segal
- Latvian Institute of Organic Synthesis; Riga; LV-1006; Latvia
| | - Yuris Popelis
- Latvian Institute of Organic Synthesis; Riga; LV-1006; Latvia
| | | | | | | | - Daina Eze
- Biological Faculty; University of Latvia; Riga; LV-1586; Latvia
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15
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Affiliation(s)
- Annaliese K. Franz
- Department of Chemistry, University of California—Davis, One Shields Avenue, Davis,
California, United States
| | - Sean O. Wilson
- Department of Chemistry, University of California—Davis, One Shields Avenue, Davis,
California, United States
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16
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Shelton JR, Cutler CE, Browning MS, Balzarini J, Peterson MA. Synthesis and SAR of 2′,3′-bis-O-substituted N6, 5′-bis-ureidoadenosine derivatives: Implications for prodrug delivery and mechanism of action. Bioorg Med Chem Lett 2012; 22:6067-71. [DOI: 10.1016/j.bmcl.2012.08.050] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Revised: 08/01/2012] [Accepted: 08/13/2012] [Indexed: 11/16/2022]
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17
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Reta GF, Tonn CE, Ríos-Luci C, León LG, Pérez-Roth E, Padrón JM, Donadel OJ. Cytotoxic Bioactivity of Some Phenylpropanoic Acid Derivatives. Nat Prod Commun 2012. [DOI: 10.1177/1934578x1200701023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this study, we synthesized a series of phenylpropanoic acid derivatives based on modifications at four selected points of the molecular scaffold. The in vitro antiproliferative activities of the compounds were examined in representative human solid tumor cell lines. A SAR was established pointing out the relevance of the substituents. The best activity profiles were obtained for the derivatives bearing more lipophilic esters (GI50 3.1-21 μM).
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Affiliation(s)
- Guillermo F. Reta
- INTEQUI-CONICET, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera -5700- San Luis, Argentina
| | - Carlos E. Tonn
- INTEQUI-CONICET, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera -5700- San Luis, Argentina
| | - Carla Ríos-Luci
- BioLab, Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG), Universidad de La Laguna, C/Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
| | - Leticia G. León
- BioLab, Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG), Universidad de La Laguna, C/Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
| | - Eduardo Pérez-Roth
- BioLab, Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG), Universidad de La Laguna, C/Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
| | - José M. Padrón
- BioLab, Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG), Universidad de La Laguna, C/Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
| | - Osvaldo J. Donadel
- INTEQUI-CONICET, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera -5700- San Luis, Argentina
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18
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New substituted C-19-andrographolide analogues with potent cytotoxic activities. Bioorg Med Chem Lett 2012; 22:49-52. [DOI: 10.1016/j.bmcl.2011.11.085] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Revised: 10/28/2011] [Accepted: 11/21/2011] [Indexed: 11/22/2022]
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19
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γ-Lactones α,β- and β,γ-fused to carbocycles as novel antiproliferative drugs. Bioorg Med Chem Lett 2008; 18:5171-3. [DOI: 10.1016/j.bmcl.2008.08.098] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2008] [Revised: 08/25/2008] [Accepted: 08/26/2008] [Indexed: 11/22/2022]
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20
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León LG, Miranda PO, Martín VS, Padrón JI, Padrón JM. Antiproliferative activity of 4-chloro-5,6-dihydro-2H-pyrans. Part 2: Enhancement of drug cytotoxicity. Bioorg Med Chem Lett 2007; 17:3087-90. [PMID: 17398091 DOI: 10.1016/j.bmcl.2007.03.045] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2007] [Revised: 03/12/2007] [Accepted: 03/14/2007] [Indexed: 11/17/2022]
Abstract
The Prins reaction was the basis to synthesize functionalized alkyl chlorodihydropyran derivatives. The inexpensive, stable, and environmentally friendly FeCl(3) promotes the cyclization. The method represents an efficient and regioselective manner to obtain in a single step chlorovinyl-TMS oxacycles. The in vitro antiproliferative activities of the compounds were examined in the human solid tumor cell lines A2780 (ovarian cancer), SW1573 (non-small cell lung cancer), and WiDr (colon cancer). Overall, the results show an enhancement in the cytotoxicity exhibited by the new analogs when compared to their parental compounds.
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Affiliation(s)
- Leticia G León
- Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, C/ Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
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21
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León LG, Carballo RM, Vega-Hernández MC, Martín VS, Padrón JI, Padrón JM. Antiproliferative activity of 2-alkyl-4-halopiperidines and 2-alkyl-4-halo-1,2,5,6-tetrahydropyridines in solid tumor cell lines. Bioorg Med Chem Lett 2007; 17:2681-4. [PMID: 17376681 DOI: 10.1016/j.bmcl.2007.03.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2007] [Accepted: 03/03/2007] [Indexed: 11/19/2022]
Abstract
A series of trans-2-alkyl-4-halopiperidines and 2-alkyl-4-halo-1,2,5,6-tetrahydropyridines were prepared by means of an iron(III) catalyzed process. The in vitro antiproliferative activities were examined in the human solid tumor cell lines A2780 (ovarian cancer), SW1573 (non-small cell lung cancer), and WiDr (colon cancer). The results on the biological activity revealed that, in general, the 2-alkyl-4-halo-1,2,5,6-tetrahydropyridine analogs are more potent than the trans-2-alkyl-4-halopiperidine derivatives. A remarkable selectivity of the aza compound 5f for the resistant cell line WiDr was observed. Cell cycle studies revealed a G(2)/M phase arrest for 5f.
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Affiliation(s)
- Leticia G León
- Instituto Universitario de Bio-Orgánica Antonio González (IUBO-AG), Universidad de La Laguna, C/ Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
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22
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Carrillo R, León LG, Martín T, Martín VS, Padrón JM. Synthesis and antiproliferative activity of (2R,3R)-disubstituted tetrahydropyrans. Part 2: Effect of side chain homologation. Bioorg Med Chem Lett 2007; 17:780-3. [PMID: 17110107 DOI: 10.1016/j.bmcl.2006.10.066] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2006] [Revised: 10/23/2006] [Accepted: 10/24/2006] [Indexed: 11/30/2022]
Abstract
In this study, we synthesized a series of enantiomerically pure (2R,3R)- and (2R,3S)-disubstituted tetrahydropyrans bearing a CH2O spacer group on the side chain at position 2 of the heterocyclic ring. The in vitro antiproliferative activities of the compounds were examined in the human solid tumor cell lines A2780 (ovarian cancer), SW1573 (non-small cell lung cancer), and WiDr (colon cancer). Overall, the results point out the relevance for antiproliferative activity of the distance between the heterocycle and the unsaturated group.
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Affiliation(s)
- Romen Carrillo
- Instituto Universitario de Bio-Orgánica Antonio González (IUBO-AG), Universidad de La Laguna, C/Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
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23
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Donadel OJ, Martín T, Martín VS, Padrón JM. Samarium(II) promoted stereoselective synthesis of antiproliferative cis-β-alkoxy-γ-alkyl-γ-lactones. Bioorg Med Chem Lett 2007; 17:18-21. [PMID: 17055722 DOI: 10.1016/j.bmcl.2006.10.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2006] [Revised: 10/03/2006] [Accepted: 10/04/2006] [Indexed: 11/23/2022]
Abstract
Samarium(II) iodide promotes the stereoselective synthesis of cis-beta-alkoxy-gamma-alkyl-gamma-lactones under mild conditions starting from linear precursors. The in vitro antiproliferative activities were examined in the human solid tumor cell lines from diverse origin A2780, SW1573, and WiDr. From the growth inhibition data a structure-activity relationship was obtained. Overall the results point to the relevant role of cis-beta-alkoxy-gamma-alkyl-gamma-lactones as novel scaffolds for the development of new anticancer drugs.
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Affiliation(s)
- Osvaldo J Donadel
- Instituto Universitario de Bio-Orgánica "Antonio González", Universidad de La Laguna, C/ Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
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24
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Pungitore CR, León LG, García C, Martín VS, Tonn CE, Padrón JM. Novel antiproliferative analogs of the Taq DNA polymerase inhibitor catalpol. Bioorg Med Chem Lett 2006; 17:1332-5. [PMID: 17178223 DOI: 10.1016/j.bmcl.2006.11.086] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2006] [Revised: 11/28/2006] [Accepted: 11/30/2006] [Indexed: 11/20/2022]
Abstract
The naturally occurring iridoid catalpol (1) is a Taq DNA polymerase inhibitor. However, its poor lipophilicity might account for the lack of biological activity against human solid tumor cell lines. The traditional prodrug approach by means of peracetylation of the free hydroxyl groups led to a compound, which showed a marginal growth inhibition against the most sensitive cell line A2780 (ovarian cancer). However, the formation of analogs bearing one to three silyl ether groups led to antiproliferative compounds against a panel of six human solid tumor cell lines, with GI50 values in the range 1.8-4.8 microM. Cell cycle studies revealed arrest in G0/G1 phase that is consistent with DNA polymerase inhibition.
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Affiliation(s)
- Carlos R Pungitore
- Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, C/Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
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25
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Carrillo R, León LG, Martín T, Martín VS, Padrón JM. Synthesis and antiproliferative activity of (2R,3R)-disubstituted tetrahydropyrans. Bioorg Med Chem Lett 2006; 16:6135-8. [PMID: 16950618 DOI: 10.1016/j.bmcl.2006.08.094] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2006] [Revised: 08/22/2006] [Accepted: 08/23/2006] [Indexed: 11/18/2022]
Abstract
In this study, we synthesized a series of enantiomerically pure (2R,3R)-disubstituted tetrahydropyrans with diverse functional groups. The in vitro antiproliferative activities were examined in the human solid tumor cell lines A2780 (ovarian cancer), SW1573 (non-small cell lung cancer), and WiDr (colon cancer). Overall, the results show the relevance for antiproliferative activity of the alpha,beta-unsaturated ester side chain at position 2 of the THP ring.
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Affiliation(s)
- Romen Carrillo
- Instituto Universitario de Bio-Orgánica Antonio González (IUBO-AG), Universidad de La Laguna, C/Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
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26
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Kohn LK, Pavam CH, Veronese D, Coelho F, De Carvalho JE, Almeida WP. Antiproliferative effect of Baylis–Hillman adducts and a new phthalide derivative on human tumor cell lines. Eur J Med Chem 2006; 41:738-44. [PMID: 16647163 DOI: 10.1016/j.ejmech.2006.03.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 01/29/2006] [Accepted: 03/10/2006] [Indexed: 11/23/2022]
Abstract
In this work we report our results concerning the study on the in vitro antiproliferative activity of 18 Baylis-Hillman adducts and some derivatives against a panel of humor tumor cell lines. A brief qualitative structure-activity relationship study indicated that carbon-carbon double bond and the presence of an electron-withdrawing substituent at the aromatic ring are essential for the activity. A quinoline-phthalide derivative has exhibited a potent effect on the proliferation of all cell lines. It is interesting to note their special cytotoxic activity against NCIADR cell line.
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Affiliation(s)
- Luciana K Kohn
- Cellular Biology Department, IB/UNICAMP, PO Box 6109, 13083-863 Campinas, SP, Brazil
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Miranda PO, León LG, Martín VS, Padrón JI, Padrón JM. One-pot synthesis and SAR study of cis-2,6-dialkyl-4-chloro-tetrahydropyrans. Bioorg Med Chem Lett 2006; 16:3135-8. [PMID: 16603350 DOI: 10.1016/j.bmcl.2006.03.064] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2006] [Revised: 03/17/2006] [Accepted: 03/18/2006] [Indexed: 10/24/2022]
Abstract
A series of cis-2,6-dialkyl-4-chloro-tetrahydropyrans were prepared by means of an iron(III)-catalyzed process. The in vitro antiproliferative activities were examined in the human solid tumor cell lines A2780, SW1573, and WiDr. The results show that the presence of bulky substituents favors the Prins cyclization leading to new products with better activity profile against all cell lines tested.
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Affiliation(s)
- Pedro O Miranda
- Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, C/ Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
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Pinacho Crisóstomo FR, Padrón JM, Martín T, Villar J, Martín VS. A Short and Efficient Enantiomeric Synthesis of Antitumor Fused Tetrahydrofurans. European J Org Chem 2006. [DOI: 10.1002/ejoc.200500842] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Miranda PO, Padrón JM, Padrón JI, Villar J, Martín VS. Prins-Type Synthesis and SAR Study of Cytotoxic Alkyl Chloro Dihydropyrans. ChemMedChem 2006; 1:323-9. [PMID: 16892367 DOI: 10.1002/cmdc.200500057] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A series of functionalized tetrahydropyran and dihydropyran derivatives was synthesized by means of a Prins-type cyclization between unsaturated alcohols and several aldehydes. An unprecedented dimer bearing two 4-chloro-5,6-dihydro-2H-pyran scaffolds was obtained in high yield. A panel of three representative human solid tumor cells from diverse origin was used to assess the cytotoxicity of the compounds. Overall, the results show the relevance of the chlorovinyl group in the biological activity, and 2-alkyl-4-chloro-5,6-dihydro-2H-pyrans represent interesting leads for further chemical modifications and biological studies.
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Affiliation(s)
- Pedro O Miranda
- Instituto Universitario de Bio-Orgánica Antonio González (IUBO-AG), Universidad de la Laguna, C/Astrofísico Francisco Sánchez, 2, 38206 La Laguna, and Instituto Canario de Investigación Biomédica, Hospital Universitario NS de Candelaria, Tenerife, Spain
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