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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

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

3

Result of heart transplantation waiting list under extracorporeal membrane oxygenation support: Experience in National Taiwan University Hospital

Ta Chungshen, Yih Shangchen, Shu Chienhuang, Wen Jeko, Nai Kaunchou, Ron Binhsu, Sheei Shenwang, Fang Yuelin, Shu Hsunchu

Journal:

Heart Lung & Circulation

Year:

2001

Language:

english

File:

PDF, 89 KB

english, 2001

4

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

5

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

6

Case report: Re-emerging significance of surgical embolectomy in pulmonary embolism

Kay, Dana F., Madjarov, Jeko M., Tenny, Bradley C.

Journal:

Annals of Medicine and Surgery

Year:

2019

Language:

english

File:

PDF, 851 KB

english, 2019

7

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

8

Qualitative Chemical Characterization and Multidirectional Biological Investigation of Leaves and Bark Extracts of Anogeissus leiocarpus (DC.) Guill. & Perr. (Combretaceae)

Orlando,, Ferrante,, Zengin,, Sinan,, Bene,, Diuzheva,, Jekő,, Cziáky,, Simone,, Recinella,, Chiavaroli,, Leone,, Brunetti,, Picot-Allain,, Mahomoodally,, Menghini,

Journal:

Year:

2019

Language:

english

File:

PDF, 1.05 MB

english, 2019

9

ChemInform Abstract: Synthesis of 2-(2-Thienyl)benzimidazoles by the Reaction of 2-( Mercaptomethyl)benzimidazole with β-Electrophilic Esters.

T. KALAI, P. SASKA, Z. SZABO, J. JEKO, O. H. HANKOVSZKY, K. HIDEG

Journal:

Year:

1997

File:

PDF, 33 KB

1997

10

ChemInform Abstract: Synthesis and Reactions of New Nitronyl Nitroxides.

T. KALAI, J. JEKO, Z. SZABO, L. PARKANYI, K. HIDEG

Journal:

Year:

1998

File:

PDF, 33 KB

1998

11

ChemInform Abstract: Fused 1,2,4-Triazole Heterocycles. Part 4. Synthesis of Four New Heterocyclic Ring Systems of [1,2,4]Triazolo[1,3]thiazinoquinolines.

F. KORODI, J. JEKO, Z. SZABO

Journal:

Year:

1998

File:

PDF, 38 KB

1998

12

ChemInform Abstract: 3-Substituted 4-Bromo-2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrol-1-yloxyl Radicals as Versatile Synthons for Synthesis of New Paramagnetic Heterocycles.

T. KALAI, M. BALOG, J. JEKOE, K. HIDEG

Journal:

Year:

1999

File:

PDF, 35 KB

1999

13

ChemInform Abstract: Synthesis of 3,4-Disubstituted 2,5-Dihydropyrrol-1-yloxyl Spin Label Reagents.

C. P. SAR, J. JEKOE, K. HIDEG

Journal:

Year:

1999

File:

PDF, 32 KB

1999

14

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

15

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

16

ChemInform Abstract: Synthesis of Pyrroline Nitroxide Annulated Carbocycles and Heterocycles.

Tamas Kalai, Jozsef Jeko, Kalman Hideg

Journal:

Year:

2000

File:

PDF, 32 KB

2000

17

ChemInform Abstract: Synthesis of 2-Substituted Pyrrolidine Nitroxide Radicals.

Szilvia Gadanyi, Tamas Kalai, Jozsef Jeko, Zoltan Berente, Kalman Hideg

Journal:

Year:

2001

File:

PDF, 30 KB

2001

18

ChemInform Abstract: Synthesis and Study of Double (EPR Active and Fluorescent) Chemosensors in the Presence of Fe3+ Ion.

Olga H. Hankovsky, Tamas Kalai, Eva Hideg, Jozsef Jeko, Kalman Hideg

Journal:

Year:

2001

File:

PDF, 33 KB

2001

19

Synthesis of α-Azido-2′-hydroxychalcones from Chalcone Dibromides with Azide Ion.

Tamas Patonay, Jozsef Jeko, Eva Riman

Journal:

Year:

2002

File:

PDF, 35 KB

2002

20

Dimethyldioxirane Oxidation of the Epoxides of (Z)-3-Arylidene-1-thioflavanones.

Albert Levai, Tamas Patonay, Gabor Toth, Jozsef Kovacs, Jozsef Jeko

Journal:

Year:

2002

File:

PDF, 31 KB

2002

21

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

22

Synthesis of 3-Aroyl-4-(3-chromonyl)-2-pyrazolines.

Albert Levai, Jozsef Jeko

Journal:

Year:

2003

File:

PDF, 96 KB

2003

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 Paramagnetic Carbo- and Heterocycles.

Gyoezoe Kulcsar, Tamas Kalai, Jozsef Jekoe, Kalman Hideg

Journal:

Year:

2003

File:

PDF, 207 KB

2003

25

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

26

Regioselective Epoxidation of 3-(3-Oxo-3-arylpropenyl)chromen-4-ones by Dimethyldioxirane.

Albert Levai, Jozsef Jekoe

Journal:

Year:

2004

File:

PDF, 12 KB

2004

27

Synthesis and Reactions of Paramagnetic Aromatic Aldehydes as Useful Synthetic Building Blocks.

Tamas Kalai, Gyoezoe Kulcsar, Jozsef Jekoe, Erzsebet Oesz, Kalman Hideg

Journal:

Year:

2005

File:

PDF, 95 KB

2005

28

Dimethyldioxirane Epoxidation of 3-Aryl-1-(3-coumarinyl)propen-1-ones.

Albert Levai, Jozsef Jeko, D. I. Brahmbhatt

Journal:

Year:

2005

File:

PDF, 14 KB

2005

29

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

30

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

31

Synthesis of 1-Substituted 5-Aryl-3-(3-coumarinyl)-2-pyrazolines by the Reaction of 3-Aryl-1-(3-coumarinyl)propen-1-ones with Hydrazines.

Albert Levai, Jozsef Jeko, D. I. Brahmbhatt

Journal:

Year:

2006

File:

PDF, 18 KB

2006

32

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

33

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

34

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 Lévai, Artur M. S. Silva, Diana C. G. A. Pinto, José A. S. Cavaleiro, Ibon Alkorta, José Elguero, József Jekö

Journal:

European Journal of Organic Chemistry

Year:

2004

Language:

english

File:

PDF, 158 KB

english, 2004

35

Synthesis of Pyrazoles by Treatment of 3-Benzylchromones, 3-Benzylflavones and Their 4-Thio Analogues with Hydrazine

Albert Lévai, Artur M. S. Silva, José A. S. Cavaleiro, Ibon Alkorta, José Elguero, József Jekő

Journal:

European Journal of Organic Chemistry

Year:

2006

Language:

english

File:

PDF, 151 KB

english, 2006

36

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

37

Synthesis of Highly Substituted 2H-Azirine-2-carboxylates via 3-Azido-4-oxobut-2-enoates

Tamás Patonay, József Jekő, Éva Juhász-Tóth

Journal:

European Journal of Organic Chemistry

Year:

2008

Language:

english

File:

PDF, 550 KB

english, 2008

38

Fused 1,2,4-triazole heterocycles. IV. Synthesis of four new heterocyclic ring systems of [1,2,4]triazolo[1,3]thiazinoquinolines

Ferenc Kóródi, József Jekõ, Zoltán Szabó

Journal:

Journal of Heterocyclic Chemistry

Year:

1997

File:

PDF, 485 KB

1997

39

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

40

Dimethyldioxirane oxidation of the epoxides of (Z)-3-arylidene-1-thioflavanones

Albert LÉvai, TamÁs Patonay, GÁbor TÓth, JÓzsef KovÁcs, JÓzsef Jekö

Journal:

Journal of Heterocyclic Chemistry

Year:

2002

Language:

english

File:

PDF, 45 KB

english, 2002

41

Synthesis of 3-aroyl-4-(3-chromonyl)-2-pyrazolines

Albert Lévai, József Jekö

Journal:

Journal of Heterocyclic Chemistry

Year:

2002

Language:

english

File:

PDF, 37 KB

english, 2002

42

Regioselective epoxidation of 3-(3-Oxo-3-arylpropenyl)chromen-4-ones by dimethyldioxirane

Albert Lévai, József Jekő

Journal:

Journal of Heterocyclic Chemistry

Year:

2004

Language:

english

File:

PDF, 103 KB

english, 2004

43

Dimethyldioxirane epoxidation of 3-aryl-1-(3-coumarinyl)propen-1-ones

Albert Lévai, JÓZsef Jekő, D. I. Brahmbhatt

Journal:

Journal of Heterocyclic Chemistry

Year:

2004

Language:

english

File:

PDF, 120 KB

english, 2004

44

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

45

Synthesis of 1-substituted 5-aryl-3-(3-coumarinyl)-2-pyrazolines by the reaction of 3-aryl-1-(3-coumarinyl)propen-1-ones with hydrazines

Albert Lévai, Jozsef Jekö, D. I. Brahmbhatt

Journal:

Journal of Heterocyclic Chemistry

Year:

2005

Language:

english

File:

PDF, 89 KB

english, 2005

46

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

47

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

48

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

49

Dimethyldioxirane epoxidation of chalcone and isoflavone glycoside acetates

Waldemar Adam, József Jekõ, Albert Lévai, Csaba Nemes, Tamás Patonay

Journal:

European Journal of Organic Chemistry

Year:

1995

Language:

english

File:

PDF, 357 KB

english, 1995

50

Mass spectrometric studies of anomeric glycopyranosyl azides

Zoltán Dinya, Péter Benke, Zoltán Györgydeák, László Somsák, József Jekö, István Pintér, János Kuszman, Jean-Pierre Praly

Journal:

Journal of Mass Spectrometry

Year:

2001

Language:

english

File:

PDF, 192 KB

english, 2001

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