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Batsi Y, Antonopoulou G, Fotopoulou T, Koumaki K, Kritsi E, Potamitis C, Goulielmaki M, Skarmalioraki S, Papalouka C, Poulou-Sidiropoulou E, Kosmidou V, Douna S, Vidali MS, Gkotsi EF, Chatziioannou A, Souliotis VL, Pletsa V, Papadodima O, Zoumpourlis V, Georgiadis P, Zervou M, Pintzas A, Kostas ID. Design and Synthesis of Novel 2-Acetamido, 6-Carboxamide Substituted Benzothiazoles as Potential BRAFV600E Inhibitors - In vitro Evaluation of their Antiproliferative Activity. ChemMedChem 2023; 18:e202300322. [PMID: 37792577 DOI: 10.1002/cmdc.202300322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 10/02/2023] [Accepted: 10/03/2023] [Indexed: 10/06/2023]
Abstract
The oncogenic BRAFV600E kinase leads to abnormal activation of the MAPK signaling pathway and thus, uncontrolled cellular proliferation and cancer development. Based on our previous virtual screening studies which issued 2-acetamido-1,3 benzothiazole-6-carboxamide scaffold as active pharmacophore displaying selectivity against the mutated BRAF, eleven new substituted benzothiazole derivatives were designed and synthesized by coupling of 2-acetamidobenzo[d]thiazole-6-carboxylic acid with the appropriate amines in an effort to provide even more efficient inhibitors and tackle drug resistance often developed during cancer treatment. All derived compounds bore the benzothiazole scaffold substituted at position-2 by an acetamido moiety and at position-6 by a carboxamide functionality, the NH moiety of which was further linked through an alkylene linker to a sulfonamido (or amino) aryl (or alkyl) functionality or a phenylene linker to a sulfonamido aromatic (or non-aromatic) terminal pharmacophore in the order -C6 H4 -NHSO2 -R or reversely -C6 H4 -SO2 N(H)-R. These analogs were subsequently biologically evaluated as potential BRAFV600E inhibitors and antiproliferative agents in several colorectal cancer and melanoma cell lines. In all assays applied, one analog, namely 2-acetamido-N-[3-(pyridin-2-ylamino)propyl]benzo[d]thiazole-6-carboxamide (22), provided promising results in view of its use in drug development.
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Affiliation(s)
- Yakinthi Batsi
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Georgia Antonopoulou
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Theano Fotopoulou
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Kassandra Koumaki
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Eftichia Kritsi
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Constantinos Potamitis
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Maria Goulielmaki
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Salomi Skarmalioraki
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Chara Papalouka
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Eleni Poulou-Sidiropoulou
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Vivian Kosmidou
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Stavroula Douna
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Maria-Sofia Vidali
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Eleni-Fani Gkotsi
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Aristotelis Chatziioannou
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Vassilis L Souliotis
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Vasiliki Pletsa
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Olga Papadodima
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Vassilis Zoumpourlis
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Panagiotis Georgiadis
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Maria Zervou
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Alexander Pintzas
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Ioannis D Kostas
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
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Kostas ID, Antonopoulou G, Ioannou PC, Ferentinos E, Kyritsis P. A synthetic methodology for the preparation of a water-soluble quaternized amino phosphine oxide ligand. Results in Chemistry 2022. [DOI: 10.1016/j.rechem.2022.100525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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3
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Ioannou PC, Arbez-Gindre C, Zoumpanioti M, Raptopoulou CP, Psycharis V, Kostas ID, Kyritsis P. Catalytic reactivity of the complexes [Pd{(Ph2P)2N( Bu)-P,P´}X2], X = Cl, Br, I, in the Suzuki-Miyaura C−C coupling reaction: Probing effects of the halogeno ligand X− and the ligand's Bu group. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2018.10.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Stamatopoulos IK, Kapsi M, Roulia M, Vougioukalakis GC, Raptopoulou CP, Psycharis V, Kostas ID, Kollár L, Kyritsis P. Structural features and catalytic reactivity of [Pd{(Ph2P)2N(CH2)3Si(OCH3)3-κP,P′}I2] and related complexes in hydroalkoxycarbonylation and Suzuki–Miyaura C−C cross-coupling reactions. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.05.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Stamatopoulos I, Roulia M, Vallianatou KA, Raptopoulou CP, Psycharis V, Carravetta M, Papachristodoulou C, Hey-Hawkins E, Kostas ID, Kyritsis P. Immobilization of [Pd{(Ph2P)2N(CH2)3Si(OCH3)3-κP,P'}X2] (X=Cl, Br) onto Montmorillonite: Investigating their Performance as Homogeneous or Heterogenized Suzuki-Miyaura Catalysts. ChemistrySelect 2017. [DOI: 10.1002/slct.201702601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ioannis Stamatopoulos
- Inorganic Chemistry Laboratory; Department of Chemistry; National and Kapodistrian University of Athens, Panepistimiopolis, Zografou; 15771 Athens Greece
| | - Maria Roulia
- Inorganic Chemistry Laboratory; Department of Chemistry; National and Kapodistrian University of Athens, Panepistimiopolis, Zografou; 15771 Athens Greece
| | - Kalliopi A. Vallianatou
- National Hellenic Research Foundation; Institute of Biology; Medicinal Chemistry and Biotechnology; Vas. Constantinou 48 11635 Athens Greece
| | - Catherine P. Raptopoulou
- NCSR “Demokritos”; Institute of Nanoscience and Nanotechnology; 15310 Aghia Paraskevi Athens Greece
| | - Vassilis Psycharis
- NCSR “Demokritos”; Institute of Nanoscience and Nanotechnology; 15310 Aghia Paraskevi Athens Greece
| | - Marina Carravetta
- School of Chemistry; University of Southampton; University Road Southampton SO17 1BJ United Kingdom
| | | | - Evamarie Hey-Hawkins
- Faculty of Chemistry and Mineralogy; Institute of Inorganic Chemistry; Universität Leipzig; Johannisallee 29 D-04103 Leipzig Germany
| | - Ioannis D. Kostas
- National Hellenic Research Foundation; Institute of Biology; Medicinal Chemistry and Biotechnology; Vas. Constantinou 48 11635 Athens Greece
| | - Panayotis Kyritsis
- Inorganic Chemistry Laboratory; Department of Chemistry; National and Kapodistrian University of Athens, Panepistimiopolis, Zografou; 15771 Athens Greece
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Kostas ID, Antonopoulou G, Potamitis C, Raptopoulou CP, Psycharis V. Platinum complexes with a methoxy-amino phosphine or a nitrogen-containing bis(phosphine) ligand. Synthesis, characterization and application to hydrogenation of trans -cinnamaldehyde. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2016.11.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Tenchiu AC, Ventouri IK, Ntasi G, Palles D, Kokotos G, Kovala-Demertzi D, Kostas ID. Synthesis of a palladium complex with a β-d-glucopyranosyl-thiosemicarbazone and its application in the Suzuki–Miyaura coupling of aryl bromides with phenylboronic acid. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.06.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kostas ID, Tenchiu AC, Arbez-Gindre C, Psycharis V, Raptopoulou CP. Room-temperature Suzuki–Miyaura coupling of aryl bromides with phenylboronic acid catalyzed by a palladium complex with an inexpensive nitrogen-containing bis(phosphinite) ligand. CATAL COMMUN 2014. [DOI: 10.1016/j.catcom.2014.03.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Vallianatou KA, Frank DJ, Antonopoulou G, Georgakopoulos S, Siapi E, Zervou M, Kostas ID. Rhodium-catalyzed asymmetric olefin hydrogenation by easily accessible aniline- and pyridine-derived chiral phosphites. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.11.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Stangel C, Charalambidis G, Varda V, Coutsolelos AG, Kostas ID. Aqueous-Organic Biphasic Hydrogenation of trans-Cinnamaldehyde Catalyzed by Rhodium and Ruthenium Phosphane-Free Porphyrin Complexes. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100668] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Alexacou KM, Tenchiu (Deleanu) AC, Chrysina ED, Charavgi MD, Kostas ID, Zographos SE, Oikonomakos NG, Leonidas DD. The binding of β-d-glucopyranosyl-thiosemicarbazone derivatives to glycogen phosphorylase: A new class of inhibitors. Bioorg Med Chem 2010; 18:7911-22. [PMID: 20947361 DOI: 10.1016/j.bmc.2010.09.039] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 09/09/2010] [Accepted: 09/16/2010] [Indexed: 11/24/2022]
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Martynov AV, Makhaeva NA, Potapov VA, Amosova SV, Steele BR, Kostas ID. REDUCTION OF TERMINAL ORGANYLCHALCOGENO PHOSPHONATES AS A WAY TO PREPARE PRIMARY ORGANYLCHALCOGENO PHOSPHINES. PHOSPHORUS SULFUR 2010. [DOI: 10.1080/10426500490463547] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Tenchiu (Deleanu) AC, Kostas ID, Kovala-Demertzi D, Terzis A. Synthesis and characterization of new aromatic aldehyde/ketone 4-(β-d-glucopyranosyl)thiosemicarbazones. Carbohydr Res 2009; 344:1352-64. [DOI: 10.1016/j.carres.2009.05.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2009] [Revised: 05/04/2009] [Accepted: 05/08/2009] [Indexed: 10/20/2022]
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Kostas ID, Andreadaki FJ, Medlycott EA, Hanan GS, Monflier E. Synthesis of a halo-methylphenylene periphery-functionalized triazine-based dendritic molecule with a 3,3′-dimethyl-biphenyl linker using tris(halo-methylphenylene)triazines as building blocks. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.02.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kovala-Demertzi D, Kourkoumelis N, Derlat K, Michalak J, Andreadaki FJ, Kostas ID. Thiosemicarbazone-derivatised palladium nanoparticles as efficient catalyst for the Suzuki–Miyaura cross-coupling of aryl bromides with phenylboronic acid. Inorganica Chim Acta 2008. [DOI: 10.1016/j.ica.2007.09.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kostas ID, Vallianatou KA, Holz J, Börner A. A new easily accessible chiral phosphite–phosphoramidite ligand based on 2-anilinoethanol and R-BINOL moieties for Rh-catalyzed asymmetric olefin hydrogenation. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2007.11.049] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Chatziapostolou KA, Vallianatou KA, Grigoropoulos A, Raptopoulou CP, Terzis A, Kostas ID, Kyritsis P, Pneumatikakis G. Synthesis and characterization of new RhI complexes bearing CO, PPh3 and chelating P,O- or Se,Se-ligands: Application to hydroformylation of styrene. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2007.06.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kostas ID, Coutsolelos AG, Charalambidis G, Skondra A. The first use of porphyrins as catalysts in cross-coupling reactions: a water-soluble palladium complex with a porphyrin ligand as an efficient catalyst precursor for the Suzuki–Miyaura reaction in aqueous media under aerobic conditions. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.07.141] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Vallianatou KA, Kostas ID, Holz J, Börner A. Me-AnilaPhos: a new chiral phosphine–phosphoramidite ligand for a highly efficient Rh-catalyzed asymmetric olefin hydrogenation. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.08.136] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kostas ID, Steele BR, Terzis A, Amosova SV, Martynov AV, Makhaeva NA. New Palladium Complexes with S- or Se-Containing Schiff-Base Ligands as Efficient Catalysts for the Suzuki–Miyaura Cross-Coupling Reaction of Aryl Bromides with Phenylboronic Acid under Aerobic Conditions. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200600180] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Kostas ID, Heropoulos GA, Kovala-Demertzi D, Yadav PN, Jasinski JP, Demertzis MA, Andreadaki FJ, Vo-Thanh G, Petit A, Loupy A. Microwave-promoted Suzuki–Miyaura cross-coupling of aryl halides with phenylboronic acid under aerobic conditions catalyzed by a new palladium complex with a thiosemicarbazone ligand. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.04.088] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Tolis EI, Vallianatou KA, Andreadaki FJ, Kostas ID. A new rhodium complex with a nitrogen-containing bis(phosphine oxide) ligand as an efficient catalyst for the hydroformylation of styrene. Appl Organomet Chem 2006. [DOI: 10.1002/aoc.1057] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Dubrovina NV, Tararov VI, Monsees A, Spannenberg A, Kostas ID, Börner A. New chiral 1,3-diphosphine ligands for Rh-catalyzed enantioselective hydrogenation: a search for electronic effects. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.tetasy.2005.08.048] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Oikonomakos NG, Kosmopoulou MN, Chrysina ED, Leonidas DD, Kostas ID, Wendt KU, Klabunde T, Defossa E. Crystallographic studies on acyl ureas, a new class of glycogen phosphorylase inhibitors, as potential antidiabetic drugs. Protein Sci 2005; 14:1760-71. [PMID: 15987904 PMCID: PMC2253349 DOI: 10.1110/ps.051432405] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Acyl ureas were discovered as a novel class of inhibitors for glycogen phosphorylase, a molecular target to control hyperglycemia in type 2 diabetics. This series is exemplified by 6-{2,6-Dichloro- 4-[3-(2-chloro-benzoyl)-ureido]-phenoxy}-hexanoic acid, which inhibits human liver glycogen phosphorylase a with an IC(50) of 2.0 microM. Here we analyze four crystal structures of acyl urea derivatives in complex with rabbit muscle glycogen phosphorylase b to elucidate the mechanism of inhibition of these inhibitors. The structures were determined and refined to 2.26 Angstroms resolution and demonstrate that the inhibitors bind at the allosteric activator site, where the physiological activator AMP binds. Acyl ureas induce conformational changes in the vicinity of the allosteric site. Our findings suggest that acyl ureas inhibit glycogen phosphorylase by direct inhibition of AMP binding and by indirect inhibition of substrate binding through stabilization of the T' state.
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Affiliation(s)
- Nikos G Oikonomakos
- Institute of Organic and Pharmaceutical Chemistry, The National Hellenic Research Foundation, Athens, Greece.
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Kostas ID, Andreadaki FJ, Kovala-Demertzi D, Christos Prentjas, Demertzis MA. Suzuki–Miyaura cross-coupling reaction of aryl bromides and chlorides with phenylboronic acid under aerobic conditions catalyzed by palladium complexes with thiosemicarbazone ligands. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.02.003] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kostas ID, Vallianatou KA, Holz J, Börner A. Rhodium complexes with a new chiral nitrogen-containing BINOL-based diphosphite or phosphonite ligand: synthesis and application to hydroformylation of styrene and/or hydrogenation of prochiral olefins. Appl Organomet Chem 2005. [DOI: 10.1002/aoc.977] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Amosova SV, Makhaeva NA, Martynov AV, Potapov VA, Steele BR, Kostas ID. Terminal Organylchalcogenoethyl- and -propylamines and Their Schiff Base Derivatives. SYNTHESIS-STUTTGART 2005. [DOI: 10.1055/s-2005-865310] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kostas ID. Synthesis of new nitrogen-containing phosphinite and phosphine–phosphinite ligands. Application to rhodium-catalyzed hydroformylation of styrene. Inorganica Chim Acta 2003. [DOI: 10.1016/s0020-1693(03)00252-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kostas ID, Steele BR, Terzis A, Amosova SV. A palladium complex with a new hemilabile amino- and sulfur-containing phosphinite ligand as an efficient catalyst for the Heck reaction of aryl bromides with styrene. The effect of the amino group. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)00474-5] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kostas ID. Synthesis of a tetramethoxy and an amphiphilic tetrahydroxy hemilabile N,P,N-ligand. Coordination behavior towards rhodium(I) and application to hydroformylation of styrene or hydrogenation of trans-cinnamaldehyde. J Organomet Chem 2001. [DOI: 10.1016/s0022-328x(01)01116-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Kostas ID. Synthesis of new rhodium complexes with a hemilabile nitrogen-containing bis(phosphinite) or bis(phosphine) ligand. Application to hydroformylation of styrene. J Organomet Chem 2001. [DOI: 10.1016/s0022-328x(01)00701-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Salteris CS, Kostas ID, Micha-Screttas M, Steele BR, Heropoulos GA, Screttas CG, Terzis A. Synthesis of lithium ω-(m- and p-lithiophenoxy)alkoxides modified with magnesium 2-ethoxyethoxide. Crystal structures of bis[4-(2-hydroxyethoxy)phenyl]mercury and bis[4-(3-hydroxypropoxy)phenyl]mercury. J Organomet Chem 1999. [DOI: 10.1016/s0022-328x(99)00425-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Salteris CS, Kostas ID, Micha-Screttas M, Heropoulos GA, Screttas CG, Terzis A. Ortho-Directed Lithiation of omega-Phenoxy Alcohols. J Org Chem 1999; 64:5589-5592. [PMID: 11674626 DOI: 10.1021/jo990443p] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
omega-Phenoxy alcohols, PhO(CH(2))(n)()OH (n = 2-7), have been subjected to metalation with 2 equiv of n-butyllithium in tetrahydrofuran/methylcyclohexane solvent. Reaction of the resulting lithiated compounds with carbon dioxide (n = 2-7), benzaldehyde (n = 2-6), benzophenone (n = 2, 3), dimethylformamide (n = 2), ethyl formate (n = 2), and chlorodiphenylphosphine (n = 3) afforded the corresponding ortho-substituted hydroxyalkoxybenzenes in yields ranging from 45 to 83%. The synthesis is also reported of five new bis[o-(omega-hydroxyalkoxy)phenyl]mercury compounds (n = 2-6), four crystal structures of which have been determined.
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Kostas ID, Akkerman OS, Bickelhaupt F, Veldman N, Spek AL. Intraannular functionalization of the 1,3-phenylene-19-crown-6 system via bromine–lithium exchange. J Organomet Chem 1999. [DOI: 10.1016/s0022-328x(98)00884-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Kostas ID. Hydroaminomethylation of Styrene with Morpholine catalysed by a Rhodium Complex with a Phosphino Amino Alcohol Ligand. J Chem Res 1999. [DOI: 10.1039/a904041b] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kostas ID, Screttas CG, Raptopoulou CP, Terzis A. A remarkable tendency of o-lithio-N-(2-lithiooxyethyl)-N-methyl-aniline to form heterocyclic derivatives by its reaction with dichlorodialkylsilanes or silicon tetrachloride. Synthesis of 2,5,1-benzoxazasilepines and of the silaspiro analogue. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)10345-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kostas ID, Screttas CG. Synthesis and Applications of Tetrahydrofuran-Stable Substituted (3-Lithioxyalkyl)- and (4-Lithioxyalkyl)lithiums, Modified with Magnesium 2-Ethoxyethoxide. J Org Chem 1997. [DOI: 10.1021/jo9703010] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ioannis D. Kostas
- National Hellenic Research Foundation, Institute of Organic and Pharmaceutical Chemistry, 116 35 Athens, Greece
| | - Constantinos G. Screttas
- National Hellenic Research Foundation, Institute of Organic and Pharmaceutical Chemistry, 116 35 Athens, Greece
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Kostas ID, Gruter GJM, Akkerman OS, Bickelhaupt F, Kooijman H, Smeets WJJ, Spek AL. Functionalization of 1,3-Phenylene-16-crown-5 via Direct Lithiation. Organometallics 1996. [DOI: 10.1021/om960431j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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