Works matching IS 0022152X AND DT 1989 AND VI 26 AND IP 4
Results: 47
1,3-Dipolar cycloaddition reactions. Regioselective synthesis of heterocycles and theoretical studies.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1003, doi. 10.1002/jhet.5570260420
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Synthesis of 3,4,5-triamino-4 H-1,2,4-triazole (guanazine) and its 4-arylideneamino derivatives.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1077, doi. 10.1002/jhet.5570260431
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Constantes d'acidité de quelques bihétérocycles.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 893, doi. 10.1002/jhet.5570260402
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A selective synthesis of 1-aryl-3-quinoxalinyl-1,2,4-triazole and furo[2,3- b]quinoxaline.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1129, doi. 10.1002/jhet.5570260442
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Synthesis of pyrazolo[3,4- b][1,4]diazepines and pyrazolo[3,4- b]pyrazines.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 949, doi. 10.1002/jhet.5570260413
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Synthèse et étude de modèles de NADH à noyaux accolés en série pyrrolo[2,3- b] et [3,2- b]pyridines.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1029, doi. 10.1002/jhet.5570260424
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Studies in spiroheterocycles. Part XVII. synthesis of novel fluorine containing spiro[indole-pyranobenzopyran] and spiro[indenopyran-indole] derivatives.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1097, doi. 10.1002/jhet.5570260435
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Synthesis of certain substituted pyrimidines as potential schistosomicidal agents.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 913, doi. 10.1002/jhet.5570260406
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Tautomeric structure of dihydropyrazolo[1,5- a]-pyrimidin-7-one in a solution. A facile synthesis of novel 6-quinoxalinyldihydropyrazolo[1,5- a]pyrimidin-7-ones by ring transformation.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1159, doi. 10.1002/jhet.5570260446
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Crystal structure of 1:1 Complexes between urea and two crown ether derivatives of phthalic acid, 2,3,5,6,8,9,11,12,14,15-decahydrobenzo[1,4,7,10,13,16]hexaoxacyclo-octadecin-18,19-dicarboxylic acid (i) and 2,3,5,6,8,9,11,12-octahydro-benzo[1,4,7,10,13]pentaoxacyclopentadecin-15,16-dicarboxylic acid (II)
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 981, doi. 10.1002/jhet.5570260417
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Nitrogen bridgehead compounds. Part 76.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1061, doi. 10.1002/jhet.5570260428
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Synthesis of 5-benzoyl-5-phenyl- and 5-phenylhydroxymethyl-5-phenylhydantoins as potential anticonvulsants.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1113, doi. 10.1002/jhet.5570260439
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Reaction of N-hydroxymethylsaccharin with aliphatic carboxylic acid derivatives: Synthesis of N-acylsaccharins and N-(saccharinylmethyl) aliphatic carboxylates.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1073, doi. 10.1002/jhet.5570260430
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Novel chromophoric heterocycles based on maleimide and naphthoquinone.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 885, doi. 10.1002/jhet.5570260401
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Alkyl substituted 3-PPP derivatives. Synthesis and biological investigation.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1125, doi. 10.1002/jhet.5570260441
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Synthesis of N-heterocycles via chalcone epoxides. 1. Amino and hydrazinopyrimidines.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 947, doi. 10.1002/jhet.5570260412
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Pyrrolo[1,4]benzodiazepines. IV. Synthesis of E- and Z-5,11-dioxo-11a-ethoxycarbonyl-2-ethylidene-1,2,3,10,11,11a-hexahydro-5 H-pyrrolo[2,1- c][1,4]benzodiazepine.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1023, doi. 10.1002/jhet.5570260423
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Synthèse de pyrimidines et purines adamantylées par alkylation régiosélective directe, en catalyse par transfert de phase.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1093, doi. 10.1002/jhet.5570260434
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Synthesis and <sup>1</sup>H-, <sup>13</sup>C-NMR analysis of some substituted 1,2,3,4-tetrahydroisoquinolines.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 907, doi. 10.1002/jhet.5570260405
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New 7-substituted quinolone antibacterial agents. II. The synthesis of 1-ethyl-1,4-dihydro-4-oxo-7-(pyrazolyl, isoxazolyl, and pyrimidinyl)-1,8-naphthyridine and quinolone-3-carboxylic acids.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1147, doi. 10.1002/jhet.5570260445
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On triazoles XVIII.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 971, doi. 10.1002/jhet.5570260416
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Synthesis of potential antifilarial agents 2.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1053, doi. 10.1002/jhet.5570260427
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<sup>1</sup>H and <sup>13</sup>C NMR and x-ray diffraction studies on pyrazolo[1,5- b][1,2,4]triazine - A new heterocyclic system.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1109, doi. 10.1002/jhet.5570260438
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Synthesis and characterization of new quinoline monomers.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 929, doi. 10.1002/jhet.5570260409
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Synthesis and spectral properties of new 6-methoxy-3-(2′-thienyl)-1,2-benzisoxazole and its isomeric benzoxazole.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1119, doi. 10.1002/jhet.5570260440
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Mitt. XV: Struktur und reaktivität von isoanellierten heterocyclischen systemen mit 4nπ- und (4n + 2) π-elektronen.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 941, doi. 10.1002/jhet.5570260411
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Synthèse de dimethyl-2,2 chromannediones-3,4: Condensation avec les ortho-diaminopyridines.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1013, doi. 10.1002/jhet.5570260422
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Reaction of 6-aminopyrimidin-4-ones with diethyl ethoxymethylenemalonate in several media: Synthesis of pyrido[2,3- d]pyrimidines.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1089, doi. 10.1002/jhet.5570260433
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Preparation and reactions of isocyano-1,3,5-triazines.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 901, doi. 10.1002/jhet.5570260404
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Synthesis and antibacterial activity of some 7-substituted 1-ethyl-6-fluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acids: Ethers, secondary amines and sulfides as c-7 substituents.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1141, doi. 10.1002/jhet.5570260444
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Synthesis, structural and conformational study of some esters derived from 8-phenethyl-8-azabicyclo[4.3.1]decan-10α-ol.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 965, doi. 10.1002/jhet.5570260415
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A new synthesis of pyrazolo[1,5- d][1,2,4]triazines from pyrazolecarboxylic acid hydrazides and carbonyl compounds. I.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1045, doi. 10.1002/jhet.5570260426
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Dérivés de l'imidazo[2,l- b]thiazole. IX. Comportement du phénacyl-3 dihydro-5,6 imidazo[2,1- b]thiazole et du phénacylidène-3 tétrahydro-2,3,5,6 imidazo[2,1- b]thiazole vis-à-vis du chlorhydrate d'hydroxylamine
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1105, doi. 10.1002/jhet.5570260437
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Synthesis of 2,2,4-trisubstituted-1,2-dihydroquinazolines.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 923, doi. 10.1002/jhet.5570260408
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The formation of 2,3-disubstituted thiazolidin-4-ones from s-α'-aminomercaptoacetic acid derivatives.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 997, doi. 10.1002/jhet.5570260419
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Pyridazines. XLI.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 933, doi. 10.1002/jhet.5570260410
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Pyridazines. XLV.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1009, doi. 10.1002/jhet.5570260421
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Oxidation of 2-amino-4-methylphenol in acidic medium.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1083, doi. 10.1002/jhet.5570260432
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Manganese dioxide oxidation of 3,4,4a,5-tetrahydro[1,2,4]triazino[6,1- c][1,4]benzoxazines.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 899, doi. 10.1002/jhet.5570260403
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Etude des conditions d'accés aux 6 H-, 7 H- et 11 H-pyrimidino-[4,5- a], [4,5- b], [5,4- a] [5,4- b] et [5,4- c]carbazoles. 1.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1135, doi. 10.1002/jhet.5570260443
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The chemistry of 2 H-3,1-benzoxazine-2,4(1 H)-dione (isatoic anhydride). 21.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 957, doi. 10.1002/jhet.5570260414
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Organic phosphorus compounds. Part 3.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1039, doi. 10.1002/jhet.5570260425
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The x-ray crystal and molecular structure of chloro-α,β,γ,δ-tetraphenylporphinatopyridinegallium(III).
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1101, doi. 10.1002/jhet.5570260436
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Methylfuroquinolinones: New furocoumarin isosters as potential photoreagents toward dna.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 917, doi. 10.1002/jhet.5570260407
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Photochemical conversion of o-phenylenediamine and o-aminophenol into heterocyclics.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1163, doi. 10.1002/jhet.5570260447
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Synthèse de C-nucléosides dérivés de l'hydroxy-8 (1,2,4)triazolo[1,5- c] et [4,3- c]pyrimidines.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 991, doi. 10.1002/jhet.5570260418
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Novel diphenysulphapyrimidine acetates derived from chalcones.
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- Journal of Heterocyclic Chemistry, 1989, v. 26, n. 4, p. 1069, doi. 10.1002/jhet.5570260429
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