Works matching IS 0022152X AND DT 1997 AND VI 34 AND IP 3
Results: 57
A cyclopropenone route to new pyrrolizidine derivatives.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 757, doi. 10.1002/jhet.5570340309
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<sup>13</sup>C-NMR study of 4 H-1,3,4-thiadiazino[5,6- b]quinoxalines. A proof for the N<sub>5</sub>-deuteration in deuteriotrifluoroacetic acid.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 1029, doi. 10.1002/jhet.5570340349
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Methanetricarboxylates as key reagents for the simple preparation of heteroarylcarboxamides with potential biological activity. Part 1 reaction of methanetricarboxylates with indoline and 1,2,3,4-tetrahydroquinoline.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 969, doi. 10.1002/jhet.5570340340
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Synthesis, structure and reactivity of imidazo[1,2- a][1,8]naphthyridines.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 765, doi. 10.1002/jhet.5570340311
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Stereoselective Michael addition of 6-amino-1,3-dimethyl-2,4-pyrimidinedione to the exocyclic methylene of three sesquiterpene lactones. <sup>1</sup>H and <sup>13</sup>C NMR evidence of a new C-C bond and lactam formation.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 1037, doi. 10.1002/jhet.5570340351
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Synthesis of new 1,2,3-triazolo[1,2- a]benzotriazole derivatives or substituted 2,3-benzo-1,3a,6,6a-tetraazapentalenes. II.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 845, doi. 10.1002/jhet.5570340322
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Furopyridines. XXIII.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 925, doi. 10.1002/jhet.5570340333
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Substituted ethyl 2-acyl-3-amino-6-methylthieno[2,3- b]pyridine-4-carboxylates as synthons for novel heterocycles.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 729, doi. 10.1002/jhet.5570340304
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Thermolysis of 3-azidophenalen-1-ones to naphtho[8,1- ab]carbazolones and naphtho[8,1- ab]-8a-azonia-9-λ<sup>2</sup>-azafluoren-7-ones.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 993, doi. 10.1002/jhet.5570340344
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Thermolysis of N-allylic 1,2,4-triazoles.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 797, doi. 10.1002/jhet.5570340315
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A two-step synthesis of diaminofurazan and synthesis of N-monoarylmethyl and N,N′-diarylmethyl derivatives.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 1057, doi. 10.1002/jhet.5570340355
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Synthesis of nitrogen-containing heterocycles. 8.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 871, doi. 10.1002/jhet.5570340326
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Synthesis and spectral properties of 2,3-dihydro-4-( paramethylphenyl)-7-[( o, m-, and p-substituted)phenoxy]-1 H-1,5-benzodiazepine-2-thiones.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 953, doi. 10.1002/jhet.5570340337
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Synthesis and aggregation of cationic porphyrins.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 749, doi. 10.1002/jhet.5570340308
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Synthesis, pharmacokinetics, and biological activity of a series of new pyridonecarboxylic acid antibacterial agents bearing a 5-fluoro-2-pyridyl group or a 3-fluoro-4-pyridyl group at N-1.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 1021, doi. 10.1002/jhet.5570340348
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Studies on the chemistry of O,N- and S,N-containing heterocycles. 16.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 823, doi. 10.1002/jhet.5570340319
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Ring transformation of 5-amino (or acylamino)-6-hydroxy (or benzoyloxy)methylpyrimidin-4(3 H)-ones into 1 H-imidazoles.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 761, doi. 10.1002/jhet.5570340310
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Cyclocondensation reaction of a 1,5-diketone with 1,2-diamines.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 1033, doi. 10.1002/jhet.5570340350
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Synthesis of chirally pure 2,5-disubstituted diketopiperazines derived from trisubstituted phenylalanines.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 835, doi. 10.1002/jhet.5570340321
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Synthesis of tricyclic and tetracyclic thieno[3,2- f]-1,4-thiazepines.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 921, doi. 10.1002/jhet.5570340332
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Syntheses of five potential heterocyclic amine food mutagens.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 717, doi. 10.1002/jhet.5570340303
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Thermal reactions of 2-(2-oxo-3-nitro-4-quinolinyl)malonates.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 989, doi. 10.1002/jhet.5570340343
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Synthesis of some piperazinylpyrazolo[3,4- b]pyridines as selective serotonin re-uptake inhibitors.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 789, doi. 10.1002/jhet.5570340314
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A new type of reaction between o-phenylenediamines and aromatic aldehydes to give 2,3-diarylquinoxalines.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 1053, doi. 10.1002/jhet.5570340354
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Photocyclization reactions. Part 6.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 861, doi. 10.1002/jhet.5570340325
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Furopyridines. XXIV.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 941, doi. 10.1002/jhet.5570340336
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Synthesis and spectral properties of methyl 5-[( o-, m-, and p-R)-phenoxy]-2-benzimidazolecarbamate.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 745, doi. 10.1002/jhet.5570340307
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Direct introduction of heterocyclic residues into 1,2,4-triazin-5(2 H)ones.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 1013, doi. 10.1002/jhet.5570340347
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Unexpected formation of a xanthone in the synthesis of a bisbenzoxazole.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 817, doi. 10.1002/jhet.5570340318
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Furopyridines. XXII.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 901, doi. 10.1002/jhet.5570340329
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Urea cyclisation reaction studies.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 829, doi. 10.1002/jhet.5570340320
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Cyclocondensation reactions of heterocyclic carbonyl compounds.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 917, doi. 10.1002/jhet.5570340331
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Nucleophilic addition to substituted 1 H-4,5-dihydroimidazolium salts.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 709, doi. 10.1002/jhet.5570340302
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A built-in route leading to a self-inclusion complex of 6<sup>A</sup>,6<sup>B</sup>-(bis- O-p-allyloxyphenyl)hexakis(2,3-di- O-methyl)-α-cyclodextrin.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 983, doi. 10.1002/jhet.5570340342
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Synthesis of new type benzo[ b]thiophene fused quinones and their tetracyanoquinodimethane derivatives.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 781, doi. 10.1002/jhet.5570340313
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Functionalization and cyclization reactions of various acetanilides with 4-benzoyl-5-phenyl-2,3-furandione. Experimental and theroetical investigations.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 1047, doi. 10.1002/jhet.5570340353
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Synthesis of novel heterocycles from 2-amino-3-cyanomethyl-sulfonyl-4,5-dimethylfuran.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 857, doi. 10.1002/jhet.5570340324
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Synthesis and S-methylation of 2-thioxopyrido[3′,2′:4,5]thieno[3,2- d]-pyrimidin-4(3 H)-ones with and without a phase transfer catalyst.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 937, doi. 10.1002/jhet.5570340335
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Synthesis of 6-cyanopurines and the isolation and X-ray structure of novel 2 H-pyrroles.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 739, doi. 10.1002/jhet.5570340306
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Singlet and triplet photocycloaddition reactions of 2-pyridones with propenoate and 2,4-pentadienotes, and the frontier molecular orbital analysis.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 1005, doi. 10.1002/jhet.5570340346
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Methyl 2-[bis(acetyl)ethenyl]aminopropenoate in the synthesis of heterocyclic systems.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 813, doi. 10.1002/jhet.5570340317
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An improved process of separation of R- and S-timolol.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 1065, doi. 10.1002/jhet.5570340357
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On the synthesis and isolation of chlorocarbazoles obtained by chlorination of N-substituted carbazoles.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 891, doi. 10.1002/jhet.5570340328
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ω-Dialkylaminoalkyl ethers of phenyl-(5-substituted 1-phenyl-1 H-pyrazol-4-yl)methanols with analgesic and anti-inflammatory activity.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 963, doi. 10.1002/jhet.5570340339
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Synthesis of racemic and enantiomerically pure 2′-thia-2′,3′-dideoxycytidine as potential anti-hepatitis B virus agents.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 909, doi. 10.1002/jhet.5570340330
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Nitration in the imidazo[1,2- a]pyrazine series. Experimental and computational results.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 701, doi. 10.1002/jhet.5570340301
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Synthesis of pteridine derivatives related to folic acid and methanopterin from pyrazine-2,3-dicarbonitrile.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 973, doi. 10.1002/jhet.5570340341
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Heterocycles structurally influenced by a side chain. X. Effect of temperature and side chain on the imine-enamine tautomerism in the quinoxalinone and pyridopyrazinone systems.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 773, doi. 10.1002/jhet.5570340312
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Heterocyclic variants of the 1,5-benzodiazepine system. VIII. Reaction of 4(7)-aminobenzimidazole with ethyl 2-alkylmalonates.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 1043, doi. 10.1002/jhet.5570340352
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The synthesis of azahomotryptophane derivatives. The transformation of N-trifluoroacetyl-5-bromo-4-oxonorvaline methyl ester into 4-(imidazo[1,2- a]azinyl-3)-4-oxohomoalanine derivatives.
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- Journal of Heterocyclic Chemistry, 1997, v. 34, n. 3, p. 853, doi. 10.1002/jhet.5570340323
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