Jozsef Jeko: search on Z-Library

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1

Determination of the absolute configuration of optically active 2,2-dimethyl-3,4-epoxychromans prepared by the catalytic enantioselective epoxidation with the dimethyldioxirane/Jacobsen Mn(III)salen system

Waldemar Adam, József Jekö, Albert Lévai, Zsuzsa Majer, Csaba Nemes, Tamás Patonay, László Párkányi, Péter Sebök

Journal:

Tetrahedron: Asymmetry

Year:

1996

Language:

english

File:

PDF, 531 KB

english, 1996

2

Comprehensive approaches on the chemical constituents and pharmacological properties of flowers and leaves of American basil (Ocimum americanum L)

Zengin, Gokhan, Ferrante, Claudio, Gnapi, Diane Estelle, Sinan, Kouadio Ibrahime, Orlando, Giustino, Recinella, Lucia, Diuzheva, Alina, Jekő, József, Cziáky, Zoltán, Chiavaroli, Annalisa, Leone, Sheil

Journal:

Food Research International

Year:

2019

Language:

english

File:

PDF, 1.74 MB

english, 2019

3

A comprehensive appraisal on Crocus chrysanthus (Herb.) Herb. flower extracts with HPLC-MS/MS profiles, antioxidant and enzyme inhibitory properties

Zengin, Gokhan, Zakariyyah Aumeeruddy, Muhammad, Diuzheva, Alina, Jekő, József, Cziáky, Zoltán, Yıldıztugay, Aysegul, Yıldıztugay, Evren, Fawzi Mahomoodally, Mohamad

Journal:

Journal of Pharmaceutical and Biomedical Analysis

Year:

2018

Language:

english

File:

PDF, 1018 KB

english, 2018

4

Investigation of Chemical Profile, Biological Properties of Lotus corniculatus L. Extracts and Their Apoptotic-Autophagic Effects On Breast Cancer Cells

Yerlikaya, Serife, Baloglu, Mehmet Cengiz, Diuzheva, Alina, Jeko, Jozsef, Cziáky, Zoltán, Zengin, Gokhan

Journal:

Journal of Pharmaceutical and Biomedical Analysis

Year:

2019

Language:

english

File:

PDF, 2.01 MB

english, 2019

5

Synthesis of redox sensitive dyes based on a combination of long wavelength emitting fluorophores and nitroxides

Balázs Bognár, József Jekő, Tamás Kálai, Kálmán Hideg

Journal:

Dyes and Pigments

Year:

2010

Language:

english

File:

PDF, 992 KB

english, 2010

6

Metabolomic profile of Salvia viridis L. root extracts using HPLC–MS/MS technique and their pharmacological properties: A comparative study

Zengin, Gokhan, Mahomoodally, Fawzi, Picot-Allain, Carene, Diuzheva, Alina, Jekő, József, Cziáky, Zoltán, Cvetanović, Aleksandra, Aktumsek, Abdurrahman, Zeković, Zoran, Rengasamy, Kannan R.R.

Journal:

Industrial Crops and Products

Year:

2019

Language:

english

File:

PDF, 746 KB

english, 2019

7

Synthesis of paramagnetic BODIPY dyes as new double (spin and fluorescence) sensors

Tamás Kálai, Éva Hideg, József Jekő, Kálmán Hideg

Journal:

Tetrahedron Letters

Year:

2003

Language:

english

File:

PDF, 162 KB

english, 2003

8

Synthesis and Study of 2-(2-Thienyl)benzazole Type Fluorophores

Kálai, Tamás, Jekő, József, Ősz, Erzsébet, Hideg, Kálmán

Journal:

Synthetic Communications

Year:

2003

Language:

english

File:

PDF, 205 KB

english, 2003

9

Palladium-Catalyzed Coupling Reactions of Paramagnetic Vinyl Halides.

Tamas Kalai, Maria Balog, Jozsef Jeko, Wayne L. Hubbell, Kalman Hideg

Journal:

Year:

2003

File:

PDF, 117 KB

2003

10

Microwave-Induced Synthesis and Regio- and Stereoselective Epoxidation of 3-Styrylchromones

Tamás Patonay, Attila Kiss-Szikszai, Vera M. L. Silva, Artur M. S. Silva, Diana C. G. A. Pinto, José A. S. Cavaleiro, József Jekő

Journal:

European Journal of Organic Chemistry

Year:

2008

Language:

english

File:

PDF, 232 KB

english, 2008

11

Enantioselective reduction of prochiral ketones by chromium(II) complexes with amino acid ligands as the source of chirality

Tamás Patonay, Csongor Hajdu, József Jekő, Albert Lévai, Károly Micskei, Claudia Zucchi

Journal:

Tetrahedron Letters

Year:

1999

Language:

english

File:

PDF, 147 KB

english, 1999

12

A comparative study of the epoxidation of 2-substituted isoflavones by dimethyldioxirane, sodium hypochlorite, and alkaline hydrogen peroxide (weitz-scheffer reaction)

Albert Lévai, Tamás Patonay, Andrea Székely, Erzsébet B. Vass, Waldemar Adam, József Jekö

Journal:

Journal of Heterocyclic Chemistry

Year:

2000

File:

PDF, 408 KB

2000

13

Synthesis of new pyrrolidine nitroxide epoxides as versatile paramagnetic building blocks

Tamás Kálai, Cecı́lia P. Sár, József Jekő, Kálmán Hideg

Journal:

Tetrahedron Letters

Year:

2002

Language:

english

File:

PDF, 103 KB

english, 2002

14

ON THE SYNTHESIS OF BENZODIPYRANS

Eszenyi, Tibor, Timar, Tibor, Sebők, Peter, Jekő, Jozsef

Journal:

Heterocyclic Communications

Year:

1999

Language:

english

File:

PDF, 921 KB

english, 1999

15

Phytochemical characterization and bioactivities of five Apiaceae species: Natural sources for novel ingredients

Zengin, Gokhan, Mahomoodally, Mohamad Fawzi, Paksoy, Mehmet Yavuz, Picot-Allain, Carene, Glamocilja, Jasmina, Sokovic, Marina, Diuzheva, Alina, Jekő, József, Cziáky, Zoltán, Rodrigues, Maria João, Sin

Journal:

Industrial Crops and Products

Year:

2019

Language:

english

File:

PDF, 2.12 MB

english, 2019

16

New insights into the chemical profiling, cytotoxicity and bioactivity of four Bunium species

Zengin, Gokhan, Paksoy, Mehmet Yavuz, Aumeeruddy, Muhammad Zakariyyah, Glamocilja, Jasmina, Sokovic, Marina, Diuzheva, Alina, Jekő, József, Cziáky, Zoltán, Rodrigues, Maria João, Custodio, Luisa, Maho

Journal:

Food Research International

Year:

2019

Language:

english

File:

PDF, 1.48 MB

english, 2019

17

ChemInform Abstract: Oxazepines and Thiazepines. Part 36. Diastereoselective Sulfoxidation of 2,3-Dihydro-1,5-benzothiazepin-4(5H)-ones by Dimethyldioxirane.

Tamas Patonay, Waldemar Adam, Jozsef Jeko, Katalin E. Koever, Albert Levai, Marta Nemeth, Karl Peters

Journal:

Year:

1999

File:

PDF, 35 KB

1999

18

Synthesis and study of new paramagnetic and diamagnetic verapamil derivatives

Balázs Bognár, Shabnam Ahmed, M. Lakshmi Kuppusamy, Karuppaiyah Selvendiran, Mahmood Khan, József Jekő, Olga H. Hankovszky, Tamás Kálai, Periannan Kuppusamy, Kálmán Hideg

Journal:

Bioorganic & Medicinal Chemistry

Year:

2010

Language:

english

File:

PDF, 1.27 MB

english, 2010

19

Characterization of phytochemical components of Ferula halophila extracts using HPLC-MS/MS and their pharmacological potentials: A multi-functional insight

Zengin, Gokhan, Uysal, Ahmet, Diuzheva, Alina, Gunes, Erdogan, Jekő, József, Cziáky, Zoltán, Picot-Allain, Carene Marie Nancy, Fawzi Mahomoodally, Mohamad

Journal:

Journal of Pharmaceutical and Biomedical Analysis

Year:

2018

Language:

english

File:

PDF, 948 KB

english, 2018

20

Stereoselective formation of tricyclic cephalosporins in reactions to cephem phosphorus ylides and ketoaldehydes

János Pitlik, Tamás E. Gunda, Gyula Batta, József Jekő

Journal:

Bioorganic & Medicinal Chemistry Letters

Year:

1993

Language:

english

File:

PDF, 378 KB

english, 1993

21

Dimethyldioxirane Oxidation of Exocyclic ( E , E )-Cinnamylideneketones

Lévai, Albert, Silva, Artur M. S., Santos, Clementina M. M., Cavaleiro, José A. S., Jekő, József

Journal:

Australian Journal of Chemistry

Year:

2009

Language:

english

File:

PDF, 321 KB

english, 2009

22

HPLC-MS/MS chemical characterization and biological properties of Origanum onites extracts: a recent insight

Mahomoodally, Mohamad Fawzi, Zengin, Gokhan, Aladag, Mustafa Onur, Ozparlak, Haluk, Diuzheva, Alina, Jekő, József, Cziáky, Zoltán, Aumeeruddy, Muhammad Zakariyyah

Journal:

International Journal of Environmental Health Research

Year:

2018

Language:

english

File:

PDF, 1.66 MB

english, 2018

23

Synthesis and Study of 2-(2-Thienyl)benzazole Type Fluorophores.

Tamas Kalai, Jozsef Jeko, Erzsebet Osz, Kalman Hideg

Journal:

Year:

2003

File:

PDF, 114 KB

2003

24

Synthesis of Racemic and Enantiomerically Enriched α-Oxyfunctionalized Benzocyclanones and Chromanones by Dimethyldioxirane and Dimethyldioxirane/Mn(III) Salen System.

Tamas Patonay, Jozsef Jekoe, Attila Kiss-Szikszai, Albert Levai

Journal:

Year:

2004

File:

PDF, 49 KB

2004

25

Anti-influenza virus activity and structure–activity relationship of aglycoristocetin derivatives with cyclobutenedione carrying hydrophobic chains

Lieve Naesens, Evelien Vanderlinden, Erzsébet Rőth, József Jekő, Graciela Andrei, Robert Snoeck, Christophe Pannecouque, Eszter Illyés, Gyula Batta, Pál Herczegh, Ferenc Sztaricskai

Journal:

Antiviral Research

Year:

2009

Language:

english

File:

PDF, 337 KB

english, 2009

26

SYNTHESIS OF α-AZIDO-2′-HYDROXYCHALCONES FROM CHALCONE DIBROMIDES WITH AZIDE ION

Patonay, Tamás, Jekö, József, Rimán, Éva

Journal:

Synthetic Communications

Year:

2002

Language:

english

File:

PDF, 247 KB

english, 2002

27

Synthesis of New Paramagnetic Selenophenes

Kálai, Tamás, Bagi, Nárcisz, Jekő, József, Berente, Zoltán, Hideg, Kálmán

Journal:

Year:

2010

Language:

english

File:

PDF, 122 KB

english, 2010

28

ChemInform Abstract: Dimethyldioxirane Oxidation of Exocyclic (E,E)-Cinnamylideneketones.

Albert Levai, Artur M. S. Silva, Clementina M. M. Santos, Jose A. S. Cavaleiro, Jozsef Jeko

Journal:

Year:

2009

File:

PDF, 43 KB

2009

29

Synthesis of Pyrroline Nitroxide Annulated Carbocycles and Heterocycles

Kálai, Tamás, Jekő, József, Hideg, Kálmán

Journal:

Year:

2000

Language:

english

File:

PDF, 90 KB

english, 2000

30

Synthesis of Pyrazolyl-2-pyrazolines by Treatment of 3-(3-Aryl-3-oxopropenyl)chromen-4-ones with Hydrazine and Their Oxidation to Bis(pyrazoles).

Albert Levai, Artur M. S. Silva, Diana C. G. A. Pinto, Jose A. S. Cavaleiro, Ibon Alkorta, Jose Elguero, Jozsef Jekoe

Journal:

Year:

2005

File:

PDF, 15 KB

2005

31

Synthesis of 1-substituted 5-aryl-3-styryl-2-pyrazolines and 3-aryl-5-styryl-2-pyrazolines by the reaction of dibenzylideneacetones and E,E-cinnamylideneacetophenones with hydrazines

Albert Lévai, József Jekó

Journal:

Journal of Heterocyclic Chemistry

Year:

2006

Language:

english

File:

PDF, 411 KB

english, 2006

32

Synthesis of 2-Alkenyl-1-pyrrolin-1-oxidesand Polysubstituted Nitrones

Sár, Cecília P., Jekő, József, Hideg, Kálmán

Journal:

Year:

2003

Language:

english

File:

PDF, 93 KB

english, 2003

33

Synthesis of Spin Labelled Chromones

Müller, Éva, Kálai, Tamás, Jekö, József, Hideg, Kálmán

Journal:

Year:

2000

Language:

english

File:

PDF, 84 KB

english, 2000

34

An Efficient Procedure for the Preparation of 4-Methyl-2-thiocoumarins by the Reaction of 4-Methylcoumarins with Lawesson′s Reagent.

Albert Levai, Jozsef Jekoe

Journal:

Year:

2005

File:

PDF, 13 KB

2005

35

Synthesis of 1-substituted 3,5-diaryl-2-pyrazolines by the reaction of α,β-unsaturated ketones with hydrazines

Albert Lévai, József Jekö

Journal:

Journal of Heterocyclic Chemistry

Year:

2006

Language:

english

File:

PDF, 99 KB

english, 2006

36

An efficient procedure for the preparation of 4-methyl-2-thiocoumarins by the reaction of 4-methylcoumarins with lawesson's reagent

Albert Levai, JÓZsef Jekő

Journal:

Journal of Heterocyclic Chemistry

Year:

2005

Language:

english

File:

PDF, 50 KB

english, 2005

37

Synthesis of benzo[b][1,4]thiazepines by the reaction of 3-aryl-1-(3-coumarinyl)propen-1-ones with 2-aminothiophenol

Albert Lévai, József Jekő, Tímea Gondos, András Simon, Gábor Tóth

Journal:

Journal of Heterocyclic Chemistry

Year:

2007

Language:

english

File:

PDF, 413 KB

english, 2007

38

On the synthesis of substituted 2,2-dimethyl1-4-chromanones and related compounds

Péter Sebök, József Jekö, Tibor Timár, Joseph Cs. Jaszberenyi

Journal:

Tetrahedron Letters

Year:

1992

Language:

english

File:

PDF, 207 KB

english, 1992

39

SYNTHESIS AND STUDY OF DOUBLE (EPR ACTIVE AND FLUORESCENT) CHEMOSENSORS IN THE PRESENCE OF Fe 3+ ION

Hankovszky, Olga H., Kálai, Tamás, Hideg, Éva, Jekö, József, Hideg, Kálmán

Journal:

Synthetic Communications

Year:

2001

Language:

english

File:

PDF, 212 KB

english, 2001

40

Synthesis of New 2,2,5,5-Tetramethyl-2,5-dihydro-1 H -pyrrol-1-yloxyl Radicals and 2-Substituted-2,5,5-trimethylpyrrolidin-1-yloxyl Radicals Based α-Amino Acids

Balog, Mária, Kálai, Tamás, Jekő, József, Steinhoff, Heinz-Jürgen, Engelhard, Martin, Hideg, Kálmán

Journal:

Year:

2004

Language:

english

File:

PDF, 102 KB

english, 2004

41

Synthesis of Spiro[pyrrolidine-2,2′-adamantane] Nitrones and Nitroxides

Sár, Cecília P., Ősz, Erzsébet, Jekő, József, Hideg, Kálmán

Journal:

Year:

2005

Language:

english

File:

PDF, 677 KB

english, 2005

42

Facile Synthesis of Novel Selenium-Containing Benzopyrans

Zsótér, Zsolt, Tímár, Tibor, Kónya, Krisztina, Patonay, Tamás, Jekő, József

Journal:

Journal of Heterocyclic Chemistry

Year:

2015

Language:

english

File:

PDF, 476 KB

english, 2015

43

HPLC–MS/MS-based metabolic profiling and pharmacological properties of extracts and infusion obtained from Amelanchier parviflora var. dentata

Zengin, Gokhan, Diuzheva, Alina, Jekő, József, Cziáky, Zoltán, Bulut, Gizem, Dogan, Ahmet, Haznedaroglu, Mehmet Zeki, Rengasamy, Kannan R.R., Lobine, Devina, Bahadori, Mir Babak, Mahomoodally, Mohamad

Journal:

Industrial Crops and Products

Year:

2018

Language:

english

File:

PDF, 364 KB

english, 2018

44

First synthesis of a dihydroorotidine analogue via a diastereoselective [2+2] photocycloaddition

Attila Agócs, Gyula Batta, József Jekő, Pál Herczegh

Journal:

Tetrahedron: Asymmetry

Year:

2004

Language:

english

File:

PDF, 285 KB

english, 2004

45

Synthesis of benzopyran derivatives. XVIII. gem-Difluorination vs. 1,3-dithiolane-dihydro-1,4-dithiin rearrangement. The role of benzylic carbons

Jeko, Jozsef, Timar, Tibor, Jaszberenyi, Joseph C.

Journal:

Journal of Organic Chemistry

Year:

1991

Language:

english

File:

PDF, 525 KB

english, 1991

46

Chemical fingerprints, antioxidant, enzyme inhibitory, and cell assays of three extracts obtained from Sideritis ozturkii Aytaç & Aksoy: An endemic plant from Turkey

Zengin, Gokhan, Uğurlu, Asli, Baloglu, Mehmet Cengiz, Diuzheva, Alina, Jekő, József, Cziáky, Zoltán, Ceylan, Ramazan, Aktumsek, Abdurrahman, Picot-Allain, Carene Marie Nancy, Fawzi Mahomoodally, M.

Journal:

Journal of Pharmaceutical and Biomedical Analysis

Year:

2019

File:

PDF, 977 KB

2019

47

ChemInform Abstract: Synthesis and Reactions of a Symmetric Paramagnetic Pyrrolidine Diene.

Tamas Kalai, Maria Balog, Jozsef Jekoe, Kalman Hideg

Journal:

Year:

1999

File:

PDF, 39 KB

1999

48

Synthesis, Equilibrium and Kinetic Properties of Gd3+ Complexes of Three DTPA-Bis(Amide) Derivatives Containing Stable Nitroxide Free Radical Substituents

Zoltán Jászberényi, Ernő Brücher, József Jekő, Kálmán Hideg, Tamás Kálai, Róbert Király

Journal:

European Journal of Inorganic Chemistry

Year:

2003

Language:

english

File:

PDF, 178 KB

english, 2003

49

NOVEL SYNTHETIC APPROACH TO ALKYLENE-DIOXY- PRECOCENES

Timár, Tibor, Eszenyi, Tibor, Sebők, Peter, Jekő, József

Journal:

Heterocyclic Communications

Year:

1995

Language:

english

File:

PDF, 1.47 MB

english, 1995

50

Synthesis of Paramagnetic Carbo- and Heterocycles.

Gyoezoe Kulcsar, Tamas Kalai, Jozsef Jekoe, Kalman Hideg

Journal:

Year:

2003

File:

PDF, 207 KB

2003

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