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Gjikaj M, Leye JC, Xie T, Brockner W. Structural and spectroscopic elucidation of imidazolium and pyridinium based hexachloridophosphates and niobates. CrystEngComm 2010. [DOI: 10.1039/b919368e] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Keypour H, Rezaeivala M, Valencia L, Pérez-Lourido P. Synthesis and characterization of some new Pb(II), Mn(II) and Ag(I) complexes with a pentaaza macrocyclic ligand containing a piperazine moiety. Polyhedron 2009. [DOI: 10.1016/j.poly.2009.09.031] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Keypour H, Rezaeivala M, Valencia L, Salehzadeh S, Pe´rez-Lourido P, Khavasi HR. Synthesis and crystal structure of some new cadmium (II) macrocyclic Schiff-base complexes containing piperazine moiety. Polyhedron 2009. [DOI: 10.1016/j.poly.2009.05.083] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Keypour H, Rezaeivala M, Valencia L, Pérez-Lourido P. Synthesis and crystal structure of Mn(II) complexes with novel macrocyclic Schiff-base ligands containing piperazine moiety. Polyhedron 2008. [DOI: 10.1016/j.poly.2008.07.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Brasse M, Cámpora J, Palma P, Álvarez E, Cruz V, Ramos J, Reyes ML. Nickel 2-Iminopyridine N-Oxide (PymNox) Complexes: Cationic Counterparts of Salicylaldiminate-Based Neutral Ethylene Polymerization Catalysts. Organometallics 2008. [DOI: 10.1021/om800548y] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
| | | | | | | | | | | | - M. L. Reyes
- Centro de Tecnología Repsol-YPF, Carretera de Extremadura NV, Km 18, 28930 Mostoles, Madrid, Spain
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Kaila N, Green N, Li HQ, Hu Y, Janz K, Gavrin LK, Thomason J, Tam S, Powell D, Cuozzo J, Hall JP, Telliez JB, Hsu S, Nickerson-Nutter C, Wang Q, Lin LL. Identification of a novel class of selective Tpl2 kinase inhibitors: 4-Alkylamino-[1,7]naphthyridine-3-carbonitriles. Bioorg Med Chem 2007; 15:6425-42. [PMID: 17664070 DOI: 10.1016/j.bmc.2007.06.054] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2007] [Revised: 06/20/2007] [Accepted: 06/26/2007] [Indexed: 01/15/2023]
Abstract
We have previously reported the discovery and initial SAR of the [1,7]naphthyridine-3-carbonitriles and quinoline-3-carbonitriles as Tumor Progression Loci-2 (Tpl2) kinase inhibitors. In this paper, we report new SAR efforts which have led to the identification of 4-alkylamino-[1,7]naphthyridine-3-carbonitriles. These compounds show good in vitro and in vivo activity against Tpl2 and improved pharmacokinetic properties. In addition they are highly selective for Tpl2 kinase over other kinases, for example, EGFR, MEK, MK2, and p38. Lead compound 4-cycloheptylamino-6-[(pyridin-3-ylmethyl)-amino]-[1,7]naphthyridine-3-carbonitrile (30) was efficacious in a rat model of LPS-induced TNF-alpha production.
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Affiliation(s)
- Neelu Kaila
- Chemical and Screening Sciences, Wyeth Research, 200 CambridgePark Drive, Cambridge, MA 02140, USA.
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Yu Q, Zhu LG, Bian HD, Deng JH, Bao XG, Liang H. A new mixed-valence copper(I,II) coordination polymer with 1-D chain structure. INORG CHEM COMMUN 2007. [DOI: 10.1016/j.inoche.2006.12.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Esteban-Gómez D, Ferreirós R, Fernández-Martínez S, Avecilla F, Platas-Iglesias C, de Blas A, Rodríguez-Blas T. Lateral Macrobicyclic Architectures: Toward New Lead(II) Sequestering Agents. Inorg Chem 2005; 44:5428-36. [PMID: 16022541 DOI: 10.1021/ic0482032] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The macrobicyclic receptor L,(5) derived from 4,13-diaza-18-crown-6 incorporating a pyridinyl Schiff-base spacer, forms stable complexes with lead(II) in the presence of different counterions. The coordination environment of the guest lead(II) ion may be modulated by external factors thanks to the optimal cavity size of L(5) as well as the nature and distribution of its donor atoms. Both in solution and in solid state, the guest lead(II) is nearly centered into the macrobicyclic cavity of L(5) when poorly coordinating groups such as perchlorate are present. The long Pb-donor atom distances found in the X-ray crystal structure of [Pb(L(5))](ClO(4))(2).0.5H(2)O (1) reveal that weak interactions between the lead(II) ion and the donor atoms of the receptor exist. (1)H and (207)Pb NMR spectroscopy studies demonstrate that monoprotonation of the receptor L(5) moves the lead(II) ion to one end of the cavity, whereas its diprotonation causes the demetalation of the complex without receptor destruction. This demetalation process is reversible and very fast. All of this, together with the inertia of the receptor toward hydrolysis, opens very interesting perspectives for the use of receptor L(5) as a new lead(II) extracting agent. The X-ray crystal structure of compound [Pb(HL(5))(NO(3))][Pb(NO(3))(4)] (3) appears to be a good model for the monoprotonated intermediate of the demetalation process. In 3 the lead(II) ion is six-coordinate and clearly placed at one end of the macrobicyclic cavity, which results in a substantial shortening of the bond distances of the lead(II) coordination sphere.
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Affiliation(s)
- David Esteban-Gómez
- Departamento de Química Fundamental e Industrial, Universidade da Coruña, Campus da Zapateira, s/n, 15071 A Coruña, Spain
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Esteban D, Platas-Iglesias C, Avecilla F, de Blas A, Rodríguez-Blas T. Barium(II) thiocyanate templating Schiff-base lateral macrobicycles derived from 1,10-diaza-15-crown-5. Polyhedron 2005. [DOI: 10.1016/j.poly.2004.11.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Büyük F, Hardegger E. Welkstoffe und Antibiotika. 43. Mitteilung. [1]. Fusarinonsäure und die enantiomeren Fusarinolsäuren. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19750580305] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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12
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Steiner K, Graf U, Hardegger E. Welkstoffe und Antibiotika. 25. Mitteilung. Synthese der natürlichen Dehydrofusarinsäure. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19630460233] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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13
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Synthesis and structural characterisation of lead(II) isothiocyanate complexes with receptors derived from 1,10-diaza-15-crown-5. Polyhedron 2003. [DOI: 10.1016/s0277-5387(03)00362-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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14
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Goto Y, Tagawa Y, Yamashita K, Higuchi Y. Improved Oxidation of Active Methyl Group of N-Heteroaromatic Compounds by Selenium Dioxide in the Presence of tert-Butyl Hydroperoxide. HETEROCYCLES 2003. [DOI: 10.3987/com-02-9702] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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The spectroscopic and structural properties of copper(II) complexes of the novel tridentate (ONO) pyridine N-oxide ligand Hpoxap. Polyhedron 2002. [DOI: 10.1016/s0277-5387(02)01020-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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16
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The synthesis of three novel pendant armed macrocyclic ligands. The X-ray crystal structure of a cadmium complex derived from the first oxaazamacrocycle bearing two alkylated aromatic amine functions. Polyhedron 2001. [DOI: 10.1016/s0277-5387(01)00909-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Valencia L, Adams H, Bastida R, Fenton DE, Macı́as A. Synthesis and characterisation of silver, zinc and cadmium compounds with an N3O2 Schiff base macrocycle: the crystal and molecular structures of the silver(I) and cadmium(II) complexes. Inorganica Chim Acta 2001. [DOI: 10.1016/s0020-1693(01)00322-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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18
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Vrbová M, Baran P, Boča R, Fuess H, Svoboda I, Linert W, Schubert U, Wiede P. Preparation and structure of 2-(2-benzimidazol-2-yl)pyridine N-oxide and its complexes. Polyhedron 2000. [DOI: 10.1016/s0277-5387(00)00553-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Boca M, Baran P, Boca R, Fuess H, Kickelbick G, Linert W, Renz F, Svoboda I. Selective imidazolidine ring opening during complex formation of iron(III), copper(II), and zinc(II) with a multidentate ligand obtained from 2-pyridinecarboxaldehyde N-oxide and triethylenetetramine. Inorg Chem 2000; 39:3205-12. [PMID: 11196855 DOI: 10.1021/ic9914037] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The condensation of 2-pyridinecarboxaldehyde N-oxide and triethylenetetramine yields a product with two imidazolidine rings, as proven by a solid-state X-ray structure analysis as well as by NMR solution spectra. This ligand, L1, undergoes a ring-opening reaction on complex formation with Cu(II), yielding [CuL2]2+ where L2 functions as a pentadentate ligand, containing only one imidazolidine ring. On complexation with Zn(II) and Fe(III), both rings are opened and the complexes [ZnL3]2+ and [FeL3]3+ with a hexadentate L3 ligand are formed. The recrystallization of [ZnL3]2+ from DMSO solution results in the complex [ZnL1(DMSO)2]2+ in which L1 behaves as a tetradentate ligand. Thus L1, L2, and L3 are structural isomers with two, one, or no imidazolidine rings, as confirmed by X-ray structure analyses. The intramolecular ring formation is the result of the nucleophilic addition of the N(amino) group to the electrophilic sp2-hybridized -HC delta+=N site. Owing to the absence of the chelate effect on the sp3-hybridized carbon atom belonging to the imidazolidine ring, the ring opening is facilitated and readily observed upon complex formation with Cu(II), Zn(II), and Fe(III).
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Affiliation(s)
- M Boca
- Department of Inorganic Chemistry, Slovak Technical University, SK-812 37 Bratislava, Slovakia
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20
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Synthesis and characterisation of cobalt, nickel, zinc and cadmium compounds with a pyridine-derived N3O2 macrocycle: Crystal and molecular structures of the macrocyclic ligand and Co(II), Ni(II) and Zn(II) complexes. Inorganica Chim Acta 2000. [DOI: 10.1016/s0020-1693(99)00542-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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21
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Boča M, Valigura D, Linert W. NMR Study of New Ligands as Products of Condensation of 2-Pyridinecarboxaldehyde-N-Oxide with Polyamines. Tetrahedron 2000. [DOI: 10.1016/s0040-4020(99)01010-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Esteban D, Bañobre D, Bastida R, de Blas A, Macías A, Rodríguez A, Rodríguez-Blas T, Fenton DE, Adams H, Mahía J. Barium Templating Schiff-Base Lateral Macrobicycles. Inorg Chem 1999; 38:1937-1944. [PMID: 11670968 DOI: 10.1021/ic9811190] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Schiff-base lateral macrobicycles containing two different binding units, a rigid and unsaturated N(2)X set (X: N, O) and a flexible and cyclic N(2)O(n)() set, linked by two aromatic bridges, have been prepared by reaction of the appropriate bibracchial diamines N,N'-bis(aminobenzyl)-diaza-crown and diformyl precursors in the presence of Ba(II) as templating agent. The expected cryptands do not form in the absence of the cation; the presence of this metal ion is necessary to orient the diamine precursor in a syn conformation. Comparison of the X-ray crystal structures of the barium complex of the bibracchial diamine N,N'-bis(2-aminobenzyl)-1,10-diaza-15-crown-5 and the barium complex of the cryptand derived from it incorporating a pyridine unit indicates that the encapsulation of the metal ion is clearly more effective in the case of the cryptand. The coordination of Ba(II) ion to the pyridine nitrogen atom promotes the displacement of the metal into the cavity of the cryptand as well as important changes in the conformation of the crown unit, although the fold of the pendant arms remains practically unchanged. The cryptands reported constitute the first example of a novel family of macrobicycles.
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Affiliation(s)
- David Esteban
- Departamento de Química Fundamental e Industrial, Universidade da Coruña, Campus da Zapateira s/n 15071 La Coruña, Spain, Departamento de Química Inorgánica, Universidad de Santiago, Avda. de las Ciencias s/n 15706, Santiago de Compostela, Spain, Chemistry Department, The University, Sheffield S3 7HF, U.K., and Servicios Xerais de Apoio á Investigación, Universidade da Coruña, Spain
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25
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Lanthanide(III) complexes of two oxaazadiamine macrocyclic ligands derived from 2,6-diformylpyridine: the crystal structures of a reduced macrocyclic ligand and the corresponding diprotonated macrocycle. Inorganica Chim Acta 1998. [DOI: 10.1016/s0020-1693(98)00186-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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26
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Platas C, Bastida R, de Blas A, Fenton DE, Macías A, Rodríguez A, Rodríguez-Blas T. Complexes of lanthanide(III) ions with 18-membered Schiff-base macrocycles. Polyhedron 1998. [DOI: 10.1016/s0277-5387(97)00429-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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27
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Ardizzone S, Bianchi C, Drago P, Mozzanica D, Quagliotto P, Savarino P, Viscardi G. Adsorption of 1-alkyl-4-methylpyridinium salts at solid-liquid and water-air interfaces. Colloids Surf A Physicochem Eng Asp 1996. [DOI: 10.1016/0927-7757(96)03632-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Bastida R, de Blas A, Castro P, Fenton DE, Macías A, Rial R, Rodríguez A, Rodríguez-Blas T. Complexes of lanthanide(III) ions with macrocyclic ligands containing pyridine head units. ACTA ACUST UNITED AC 1996. [DOI: 10.1039/dt9960001493] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Blake AB, Sinn E, Yavari A, Moubaraki B, Murray KS. Magnetic properties of binuclear manganese(II), cobalt(II), nickel(II) and copper(II) complexes of a macrocyclic ligand derived from pyridine-N-oxide, and crystal structure of the nickel complex. Inorganica Chim Acta 1995. [DOI: 10.1016/0020-1693(94)04255-t] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Shiping Y, Peng C, Jiuhe P, Daizheng L, Zonghui J, Genglin W. Synthesis and magnetic properties of binuclear copper(II) complexes with alkoxide bridges. Polyhedron 1994. [DOI: 10.1016/s0277-5387(00)80113-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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33
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Bashall A, McPartlin M, Murphy BP, Powell HR, Waikar S. Interaction of environmentally important metal ions with nitrogen–sulfur-donor macrocycles. The crystal structures of seven-co-ordinate lead(II) and mercury(II) complexes of an 18-membered N4S2macrocycle. ACTA ACUST UNITED AC 1994. [DOI: 10.1039/dt9940001383] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Bandín R, Bastida R, de Blas A, Castro P, Fenton DE, Macías A, Rodríguez A, Rodríguez T. Complexes of lanthanide ions with a Schiff-base macrocyclic ligand derived from 2,6-diformylpyridine. ACTA ACUST UNITED AC 1994. [DOI: 10.1039/dt9940001185] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Nurullaeva MK, Azizov UM, Azimov VA, Mikhlina EE, Dubinskii RA, Filipenko TY, Filitis LN, Amel'kin OY, Yakhontov LN. Synthesis and antitubercular activity of (4-pyridyl)glyoxylic acid. Pharm Chem J 1988. [DOI: 10.1007/bf00763664] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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36
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Synthesis of (3-pyridyl)glyoxylic acid derivatives and their antimicrobial properties. Pharm Chem J 1986. [DOI: 10.1007/bf00758616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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37
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Möhrle H, Tröster G, Linden M, Mootz D, Wunderlich H. Oxidative spaltung von 2-(pyrrolidinomethyl)pyridin-1-oxid mit anschliessender rekombination und die kristallstruktur von (e)-2-(1-pyrrolin-3-ylidenmethyl)pyridin-1-oxid. Tetrahedron 1981. [DOI: 10.1016/s0040-4020(01)92359-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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39
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Palazzo G, Baiocchi L, Picconi G. 1,2,4-Oxadiazoles. X. Aryl-1,2,4-oxadiazolecarbaldehydes. J Heterocycl Chem 1979. [DOI: 10.1002/jhet.5570160735] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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40
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Quast H, Schmitt E. Heterocyclische Ylide, III1) Synthese heterocyclischerN-Methyl-carbonsäurebetaine. ACTA ACUST UNITED AC 1970. [DOI: 10.1002/jlac.19707320106] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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41
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Schnekenburger J. [Syn- and anti-forms of pyridine-N-oxide-2- and 4-carbaldoximes]. ARCHIV DER PHARMAZIE UND BERICHTE DER DEUTSCHEN PHARMAZEUTISCHEN GESELLSCHAFT 1969; 302:494-504. [PMID: 5267014 DOI: 10.1002/ardp.19693020704] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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42
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Kost AN, Terent'ev PB, Moshentseva LV. Synthesis of 5-hydroxyalkynylpicolinic acids. Pharm Chem J 1967. [DOI: 10.1007/bf00770185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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43
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AUTERHOFF H, STECHER KW. [ON DATA ON A BASIC DEGRADATION PRODUCT OF CEVINE. 13. SABADILLA AND VERATRUM ALKALOIDS]. Arch Pharm (Weinheim) 1963; 296:660-4. [PMID: 14205484 DOI: 10.1002/ardp.19632961004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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44
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Hafner K, Pelster H, Patzelt H. Zur Kenntnis der Azulene, VIII. 4- bzw. 8- und 6-Alkyliden-azuleniat-Salze. ACTA ACUST UNITED AC 1961. [DOI: 10.1002/jlac.19616500107] [Citation(s) in RCA: 37] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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45
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Thomas K, Jerchel D. Neuere Methoden der präparativen organischen Chemie II. 12. Die Einführung von Substituenten in den Pyridin-Ring. Angew Chem Int Ed Engl 1958. [DOI: 10.1002/ange.19580702402] [Citation(s) in RCA: 40] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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47
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48
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Jerchel D, Jakob L. Synthesen mit Pyridyl-pyridinium-halogeniden. Einführung der substituierten Aminogruppe in die 4-Stellung des Pyridinkerns. ACTA ACUST UNITED AC 1958. [DOI: 10.1002/cber.19580910622] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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49
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Jerchel D, Heck HE. Untersuchungen zur Reaktivität von Alkylgruppen heterocyclischer Verbindungen und ihrer funktionellen Derivate IV. Oxydation Von Hydroxymethylpyridinen Mit Selendioxyd. ACTA ACUST UNITED AC 1958. [DOI: 10.1002/jlac.19586130119] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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50
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Jerchel D, Heck HE. Untersuchungen zur Reaktivität von Alkylgruppen heterocyclischer Verbindungen und ihrer funktionellen Derivate III. Kondensation Von Methylpyridinen Mit Benzaldehyd. ACTA ACUST UNITED AC 1958. [DOI: 10.1002/jlac.19586130118] [Citation(s) in RCA: 27] [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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