Works matching IS 0022152X AND DT 1990 AND VI 27 AND IP 7

Results: 66

1,3-dipolar cycloadditions of 2-diazobutane, diazophenylmethane and 1-diazo-1-phenylethane to azolopyridazines. The isolation of some primary and rearranged cycloadducts and their transformations into substituted pyrazolo[4,3- d]azolopyridazines.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2145, doi. 10.1002/jhet.5570270754

By:

Huč, Branko;
Furlan, Borut;
Stanovnik, Branko;
Tišsler, Miha

Publication type:

Article

The synthesis of ring-expanded analogues of xanthine containing the imidazo[4,5- e][1,4]diazepine ring system.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2189, doi. 10.1002/jhet.5570270759

By:

Hosmane, Ramachandra S.;
Bhan, Anila

Publication type:

Article

The electron transfer reactions of cyano substituted pyridines and quinolines with thermally generated diphenyl ketyl.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1903, doi. 10.1002/jhet.5570270711

By:

Mcdevitt, Patricia;
Vittimberga, Bruno M.

Publication type:

Article

Phenylurethans of pyrazolidinols and piperidazinols as anticonvulsants.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2125, doi. 10.1002/jhet.5570270750

By:

Kornet, Milton J.

Publication type:

Article

Synthesis of pyrrolo[2,3- d]pyrimidine ribosides and their potential in chemotherapeutics.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2069, doi. 10.1002/jhet.5570270740

By:

Eger, Kurt;
Grieb, Gerlinde;
Spätling, Sabine

Publication type:

Article

Preparation of macrocyclic di- and tetraamides containing unsubstituted macroring nitrogen atoms, tertiary amine sidearms and/or piperazine subcyclic units.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2113, doi. 10.1002/jhet.5570270748

By:

Bradshaw, Jerald S.;
Krakowiak, Krzysztof E.;
An, Haoyun;
Izatt, Reed M.

Publication type:

Article

Acetylenic chemistry. Part 17.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1953, doi. 10.1002/jhet.5570270719

By:

Reisch, J.;
Usifoh, C. O.;
Oluwadiya, J. O.

Publication type:

Article

Reaction of reissert anion with aldimines: A new approach to the imidazo[5,1-α]isoquinoline ring system.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2129, doi. 10.1002/jhet.5570270751

By:

Kant, Joydeep

Publication type:

Article

Chemistry of condensed thiophenes. IV. Acetylation of phenanthro[4,5- bcd]thiophene.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1969, doi. 10.1002/jhet.5570270722

By:

Klemm, L. H.;
Lam, Lee;
Severns, Bryon;
Sur, Sandip K.

Publication type:

Article

Oxidation of 3-hydroxykynurenine. An EPR investigation.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2207, doi. 10.1002/jhet.5570270762

By:

Bolognese, Adele;
Bonomo, Raffaele P.;
Chillemi, Rosa;
Sciuto, Sebastiano

Publication type:

Article

Molecular rearrangements of 4-iminomethyl-1,2,3-triazoles. Replacement of 1-aryl substituents in 1 H-1,2,3-triazole-4-carbaldehydes.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2021, doi. 10.1002/jhet.5570270733

By:

L'abbé, Gerrit;
Bruynseels, Maria;
Delbeke, Pieter;
Toppet, Suzanne

Publication type:

Article

Isolation of keto- s-phenylthioxime of [2<sup>3</sup>]cyclophane-1,2-dione. Re-visited contraction of 1,2,5-thiadiazole ring incorporated in a [2<sup>3</sup>]cyclophane bridge by phenylmagnesium bromide.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1861, doi. 10.1002/jhet.5570270704

By:

Hatta, Taizo;
Mataka, Shuntaro;
Tashiro, Masashi;
Numano, Katsutoshi;
Tanimoto, Satoshi;
Tori-I, Akiyoshi

Publication type:

Article

Synthetic route to 4-(2-aminoethyl)-5-hydroxyindole derivatives.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2093, doi. 10.1002/jhet.5570270744

By:

Cannon, Joseph G.;
Roufos, Ioannis

Publication type:

Article

Régiospécificit de l'action des arylnitriloxydes sur la 4-cyano 1-methyl 1,4-dihydro quinoline.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1931, doi. 10.1002/jhet.5570270715

By:

Soufiaoui, M.;
Jazouli, H.

Publication type:

Article

Synthetic entries to 6-fluoro-7-substituted indole derivatives.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2151, doi. 10.1002/jhet.5570270755

By:

Mckittrick, Brian;
Failli, Amedeo;
Steffan, Robert J.;
Soll, Richard M.;
Hughes, Philip;
Schmid, Jean;
Asselin, Andre A.;
Shaw, C. C.;
Noureldin, R.;
Gavin, G.

Publication type:

Article

Pyrrolopyridazine nucleosides. The synthesis of certain 1-β-D-ribofuranosyl-1 H-pyrrolo[2,3- d]pyridazin-4(5 H)-ones.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1989, doi. 10.1002/jhet.5570270726

By:

Girgis, Nabih S.;
Robins, Roland K.;
Cottam, Howard B.

Publication type:

Article

Synthesis of 2,3,11,12,20,21,29,30-octadodecylthio-2,3-naphthalocyanines.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2219, doi. 10.1002/jhet.5570270766

By:

Kitahara, Kiyoshi;
Asano, Toyofumi;
Hamano, Ken-ichi;
Tokita, Sumio;
Nishi, Hisao

Publication type:

Article

The synthesis of difluoro[1]benzothieno[2,3- c]quinolines and their N-methyl quaternary salts.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2047, doi. 10.1002/jhet.5570270737

By:

Luo, Jiann-Kuan;
Castle, Steven L.;
Castle, Raymond N.

Publication type:

Article

Saturated heterocycles, Part 172.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1885, doi. 10.1002/jhet.5570270708

By:

Lázár, János;
Bernáth, Gábor

Publication type:

Article

Synthèse de L'hydroxy-9 pyrimido[1,6- a]pyrimidine one-4 et dérivés.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1963, doi. 10.1002/jhet.5570270721

By:

Dennin, F.;
Blondeau, D.;
Sliwa, H.

Publication type:

Article

Synthesis, alkylation and ring opening of two differently fused pyridoquinazolones.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2005, doi. 10.1002/jhet.5570270730

By:

Timári, Géza;
Hajós, György;
Messmer, András

Publication type:

Article

Ring transformation of 5-acylpyrimidines into 4-acylpyrazoles with hydrazine and phenylhydrazine in acidic medium.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1847, doi. 10.1002/jhet.5570270701

By:

Takagi, Kaname;
Bajnati, Abdelilah;
Hubert-Habart, Michel;
Terada, Hiroshi

Publication type:

Article

Synthesis of 7-alkyl-2,4-dimethoxy-5-oxo-5 H-pyrano[4,3- d]pyrimidines.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1899, doi. 10.1002/jhet.5570270710

By:

Wada, Akimori;
Kanatomo, Shōchi

Publication type:

Article

Synthesis of 6-quinoxalinyldihydropyrazolo[1,5- a]pyrimidin-7-ones by a ring transformation. Tautomeric structure of dihydropyrazolo[1,5- a]pyrimidin-7-ones in a solution.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2203, doi. 10.1002/jhet.5570270761

By:

Kurasawa, Yoshihisa;
Kim, Ho Sik;
Takada, Atsushi;
Okamoto, Yoshihisa

Publication type:

Article

Synthesis of the ( Z) and ( E) isomers of 1,2-diaryl-3-methyl-4,5-dioxo-3-pyrrolidinecarboxylic acid esters. Structural assignment by nmr and mass spectroscopy.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1857, doi. 10.1002/jhet.5570270703

By:

Titus, Richard L.;
Emerson, David W.;
González, Rowena M.

Publication type:

Article

A facile and novel synthesis of 1,6-naphthyridin-2(1 H)-ones.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2085, doi. 10.1002/jhet.5570270743

By:

Singh, Baldev;
Lesher, George Y.

Publication type:

Article

A convenient synthesis of 1-aryl-3-methyl-1,2,4-triazolin-5-ones from the reaction between acetone arylhydrazones and acetyl isocyanate.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2017, doi. 10.1002/jhet.5570270732

By:

Ray, Partha S.;
Hank, Richard F.

Publication type:

Article

Synthesis and biological evaluation of 5-substituted-4-nitroimidazole ribonucleosides.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1877, doi. 10.1002/jhet.5570270707

By:

Hasan, Ahmad;
Lambert, Carla R.;
Srivastava, Prem C.

Publication type:

Article

Etude des conditions D'accés aux 6,11-dihydro-5 H-pyrimidino[4,5- a]carbazoles.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1947, doi. 10.1002/jhet.5570270718

By:

Gazengel, Jean-Marie;
Lancelot, Jean-Charles;
Rault, Sylvain;
Robba, Max

Publication type:

Article

Stereospecific cycloaddition of heterocumulenes to oxiranes catalyzed by organotin halide complexes.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1925, doi. 10.1002/jhet.5570270714

By:

Baba, Akio;
Seki, Kenji;
Matsuda, Haruo

Publication type:

Article

1,3-Dipolar cycloaddition reactions of 1,4-benzoquinones with nitrilimines.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1983, doi. 10.1002/jhet.5570270725

By:

Argyropoulos, N. G.;
Mentzafos, D.;
Terzis, A.

Publication type:

Article

Ring-opening reaction in acidic conditions of tetraazapentalene derivatives containing a hypervalent sulfur.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2215, doi. 10.1002/jhet.5570270765

By:

Tomura, Masaaki;
Matsumura, Noboru;
Mori, Osamu;
Chikusa, Hisashi;
Kamitani, Shigeki;
Inoue, Hiroo

Publication type:

Article

Cyclopropyl-substituted pyrylium salts.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2041, doi. 10.1002/jhet.5570270736

By:

Fǎrcaşiu, Dan;
Kizirian, Mark

Publication type:

Article

Functionalized 5,6-dihydro-2 H-1,2,6-thiadiazine 1,1-dioxides. Synthesis, structure and chemistry.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2107, doi. 10.1002/jhet.5570270747

By:

Lee, Chai-Ho;
Kohn, Harold

Publication type:

Article

8-Hydroxylated derivatives of diazabicyclo[4.3.0]nonanes, 2,5-dioxodiazabicyclo[4.3.0]nonanes and some related esters.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2181, doi. 10.1002/jhet.5570270758

By:

Diafi, Lahcen;
Couquelet, Jacques;
Tronche, Pierre;
Gardette, Daniel;
Gramain, Jean-Claude

Publication type:

Article

Oxygen-17 and carbon-13 nuclear magnetic resonance spectra of thiophene- and pyrrole-2-carboxaldehyde condensation products prepared from ephedrine derivatives.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1853, doi. 10.1002/jhet.5570270702

By:

Eggleton, Gordon L.;
Cooper, Bill A.;
Sturch, Chris L.;
Trent, Jonathan C.;
Mulekar, Satish V.

Publication type:

Article

Selective lateral metalation and electrophilic quenching of c-4 functionalized isoxazoles. IX. Direct formation of the C-N bond utilizing an electrophilic nitrogen source.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2001, doi. 10.1002/jhet.5570270729

By:

Mirzaei, Yousef R.;
Balasubramaniam, T. N.;
Lefler, Barbara J.;
Natale, N. R.

Publication type:

Article

A convenient synthesis of 1,2-diazepino[3,4- b]-quinoxalines via a 1,3-dipolar cycloaddition reaction and their tautomeric structure in a solution.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2197, doi. 10.1002/jhet.5570270760

By:

Kim, Ho Sik;
Kurasawa, Yoshihisa;
Yoshii, Chiemi;
Masuyama, Minako;
Takada, Atsushi;
Okamoto, Yoshihisa

Publication type:

Article

Synthesis and preliminary biological evaluation of 5-fluoro-5,8-dideazaisoaminopterin.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2081, doi. 10.1002/jhet.5570270742

By:

Tomažič, Alenka;
Hynes, John B.;
Gale, Glen R.;
Freisheim, James H.

Publication type:

Article

Methylation of 2,4-dihydro-3 H-1,2,4-triazol-3-ones. A structural determination of anhydro-5-aryl-1,4-dimethyl-3-hydroxy-1,2,4-triazolium hydroxides by two dimensional NMR.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1957, doi. 10.1002/jhet.5570270720

By:

Huber, Edward W.;
Kane, John M.

Publication type:

Article

Synthesis of α-(aminomethylene)-9-(methoxymethyl)-9 H-purine-6-acetic acid derivatives.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2011, doi. 10.1002/jhet.5570270731

By:

Hamamichi, Norimitsu;
Miyasaka, Tadashi

Publication type:

Article

Synthesis and In vitro biological activity of some 7-(5-aminomethyl-2-isoxazolidinyl)quinolone-3-carboxylic acids.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2077, doi. 10.1002/jhet.5570270741

By:

Ziegler, Carl B.;
Kuck, Nydia A.;
Strohmeyer, Timothy W.;
Lin, Yang-I

Publication type:

Article

An improved synthesis of 3,6-diamino-1,2,4,5-tetrazine. I.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1941, doi. 10.1002/jhet.5570270717

By:

Coburn, Michael D.;
Ott, Donald G.

Publication type:

Article

Synthèse, réduction chimique et électrochimique de benzopyranno[1][4,3- e] et [3,4- e]pyrimido[1,2- b]- as-triazinones.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1917, doi. 10.1002/jhet.5570270713

By:

Vinot, Nicole;
Bellec, Christian;
Maitte, Pierre

Publication type:

Article

An improved resolution of (±)- cis-N-normetazocine.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2139, doi. 10.1002/jhet.5570270753

By:

Brine, G. A.;
Berrang, B.;
Hayes, J. P.;
Carroll, F. I.

Publication type:

Article

Protected 2-indoleacetaldehyde derivatives from 2-acylindoles.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1979, doi. 10.1002/jhet.5570270724

By:

Bonjoch, Josep;
Linares, Ana;
Pérez, M.-Lluïsa;
Bosch, Joan

Publication type:

Article

A new heterocyclic structure. The.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2213, doi. 10.1002/jhet.5570270764

By:

Buisson, Jean-Pierre;
Demerseman, Pierre

Publication type:

Article

Preparation of β-hydroxysulfides from 1,2,3-thiadiazoles. Comparison of the effect of phenylmagnesium bromide on α-Thio- and α-selenoketones.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2037, doi. 10.1002/jhet.5570270735

By:

Ganjian, Iraj

Publication type:

Article

The synthesis and transformations of 2 H-naphtho-[1,2- b]pyran-2-one derivatives. Naphtho[2′,1′:5,6]-pyrano[3,4- d][1,3]oxazines and naphtho[1′,2′:5,6]pyrano[3,4- d]-pyrimidines, derivatives of two new heterocyclic systems.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 1873, doi. 10.1002/jhet.5570270706

By:

Fajgelj, Simona;
Stanovnik, Branko;
Tišler, Miha

Publication type:

Article

Synthesis of 5-trifluoromethyl-5,8-dideazafolic acid and 5-trifluoromethyl-5,8-dideazaisofolic acid.

Published in:

Journal of Heterocyclic Chemistry, 1990, v. 27, n. 7, p. 2101, doi. 10.1002/jhet.5570270746

By:

Singh, Shyam K.;
Govindan, Meledath;
Hynes, John B.

Publication type:

Article