Klika, Karel D: search on Z-Library

The world's largest scientific articles store. 70,000,000+ articles for free.

Don't use scam websites

51

Restricted rotation/tautomeric equilibrium and determination of the site and extent of protonation in bi-imidazole nucleosides by multinuclear NMR and GIAO-DFT calculations

Jukka Mäki, Petri Tähtinen, Leif Kronberg, Karel D. Klika

Journal:

Journal of Physical Organic Chemistry

Year:

2005

Language:

english

File:

PDF, 154 KB

english, 2005

52

Regioselective syntheses, structural characterization, and electron ionization mass spectrometric behavior of regioisomeric 2,3-disubstituted 2-imino-1,3-thiazolidin-4-ones

Karel D. Klika, Pauliina Valtamo, Ladislav Janovec, Gejza Suchár, Pavol Kristian, Ján Imrich, Henri Kivelä, Juraj Alföldi, Kalevi Pihlaja

Journal:

Rapid Communications in Mass Spectrometry

Year:

2004

Language:

english

File:

PDF, 175 KB

english, 2004

53

Polyketide derivatives active againstBotrytis cinereainGerbera hybrida

Satu Koskela, Päivi P. Söderholm, Miia Ainasoja, Tero Wennberg, Karel D. Klika, Vladimir V. Ovcharenko, Irene Kylänlahti, Tiina Auerma, Jari Yli-Kauhaluoma, Kalevi Pihlaja, Pia M. Vuorela, Teemu H. Te

Journal:

Year:

2011

Language:

english

File:

PDF, 473 KB

english, 2011

54

Preface

Vadim A. Soloshonok, Karel D. Klika, William R. Dolbier Jr.

Journal:

Journal of Fluorine Chemistry

Year:

2010

Language:

english

File:

PDF, 70 KB

english, 2010

55

ChemInform Abstract: Selective Formation of 5- or 6-Membered Rings, 1,3-Thiazolidin-4-one vs. 1,3-Thiazin-4-one, from Acridine Thiosemicarbazides by the Use of Ethyne Acid Esters.

Jan Imrich, Jana Tomascikova, Ivan Danihel, Pavol Kristian, Stanislav Boehm, Karel D. Klika

Journal:

Year:

2010

File:

PDF, 30 KB

2010

56

Tailoring Enzymes Involved in the Biosynthesis of Angucyclines Contain Latent Context-Dependent Catalytic Activities

Pekka Patrikainen, Pauli Kallio, Keqiang Fan, Karel D. Klika, Khaled A. Shaaban, Pekka Mäntsälä, Jürgen Rohr, Keqian Yang, Jarmo Niemi, Mikko Metsä-Ketelä

Journal:

Chemistry & Biology

Year:

2012

Language:

english

File:

PDF, 734 KB

english, 2012

57

Ceramide 1-(2-cyanoethyl) phosphate enhances store-operated Ca2+ entry in thyroid FRTL-5 cells

Kid Törnquist, Cia Ramström, Britt Rudnäs, Karel D Klika, Benoit Dugué, Jeffrey Adams, Robert Zipkin, Kalevi Pihlaja, Michael Pasternack

Journal:

European Journal of Pharmacology

Year:

2002

Language:

english

File:

PDF, 225 KB

english, 2002

58

Novel Carbohydrazide and Hydrazone Biomarkers Based on 9-Substituted Acridine and Anthracene Fluorogens

Imrich, Ján, Bedlovičová, Zdenka, Kristian, Pavol, Danihel, Ivan, Böhm, Stanislav, Sabolová, Danica, Kožurková, Mária, Paulíková, Helena, D. Klika, Karel

Journal:

Year:

2010

Language:

english

File:

PDF, 2.30 MB

english, 2010

59

The potential of VCD to resolve the epimer vs. inverse epimer quandary

Karel D. Klika, Petri Tähtinen, Pekka Mäntsälä, Jarmo Niemi, Mikko Metsä-Ketelä

Journal:

Computational and Theoretical Chemistry

Year:

2012

Language:

english

File:

PDF, 902 KB

english, 2012

60

Alnumycins A2 and A3: new inverse-epimeric pairs stereoisomeric to alnumycin A1

Terhi Oja, Petri Tähtinen, Nadine Dreiack, Pekka Mäntsälä, Jarmo Niemi, Mikko Metsä-Ketelä, Karel D. Klika

Journal:

Tetrahedron: Asymmetry

Year:

2012

Language:

english

File:

PDF, 1.36 MB

english, 2012

61

A Convenient Synthesis of Polyfunctionally Substituted 2',2'-Bis(ethoxycarbonyl)methylene-5'-methoxycarbonyl(cyano)spiro[dihydroacridine-9(10H),4'-thiazolidines]

Kristian, Pavol, Bernát, Juraj, Chomca, Igor, Pihlaja, Kalevi, Douglas Klika, Karel, Imrich, Ján

Journal:

Year:

1999

Language:

english

File:

PDF, 137 KB

english, 1999

62

Synthesis, Structure, and Cholinergic Effect of Novel Neuroprotective Compounds Bearing the Tacrine Pharmacophore

Kristian, Pavol, Hamul'aková, Slávka, Jun, Daniel, Kuca, Kamil, Imrich, Ján, Danihel, Ivan, Böhm, Stanislav, D. Klika, Karel

Journal:

Year:

2008

Language:

english

File:

PDF, 355 KB

english, 2008

63

Selective Formation of 5- or 6-Membered Rings, 1,3-Thiazolidin-4-one vs. 1,3-Thiazin-4-one, from Acridine Thiosemicarbazides by the Use of Ethyne Acid Esters

Imrich, Ján, Tomaščiková, Jana, Danihel, Ivan, Kristian, Pavol, Böhm, Stanislav, D. Klika, Karel

Journal:

Year:

2010

Language:

english

File:

PDF, 1.09 MB

english, 2010

64

Synthesis, characterisation and theoretical calculations of 2,6-diaminopurine etheno derivatives

Virta, Piritta, Koch, Andreas, Roslund, Mattias U., Mattjus, Peter, Kleinpeter, Erich, Kronberg, Leif, Sjöholm, Rainer, Klika, Karel D.

Journal:

Organic & Biomolecular Chemistry

Year:

2005

Language:

english

File:

PDF, 223 KB

english, 2005

65

Epimers vs. inverse epimers: the C-1 configuration in alnumycin A1

Tähtinen, Petri, Oja, Terhi, Dreiack, Nadine, Mäntsälä, Pekka, Niemi, Jarmo, Metsä-Ketelä, Mikko, Klika, Karel D.

Journal:

Year:

2012

Language:

english

File:

PDF, 472 KB

english, 2012

66

Chemoenzymatic Synthesis of Novel C-Ribosylated Naphthoquinones

Blauenburg, Bastian, Oja, Terhi, Klika, Karel D., Metsä-Ketelä, Mikko

Journal:

ACS Chemical Biology

Year:

2013

Language:

english

File:

PDF, 496 KB

english, 2013

67

Theoretical Confirmation of the Reaction Mechanism Leading to Regioselective Formation of Thiazolidin-4-one from Bromoacetic Acid Derivatives

Janovec, Ladislav, Böhm, Stanislav, Danihel, Ivan, Imrich, Ján, Kristian, Pavol, Klika, Karel D.

Journal:

Collection of Czechoslovak Chemical Communications

Year:

2007

Language:

english

File:

PDF, 764 KB

english, 2007

68

Waste Plastic and Pharmaceuticals, Could an Integrated Solution Help?

Klika, Karel D.

Journal:

Environmental Science & Technology

Year:

2013

Language:

english

File:

PDF, 756 KB

english, 2013

69

A three-component protocol for the enantiodifferentiation of amines using triphenyl borate and BINOL: is it an ion pair or an amine-coordinated complex?

Klika, Karel D., Mishra, Sandeep Kumar, Chaudhari, Sachin R., Suryaprakash, N.

Journal:

Tetrahedron: Asymmetry

Year:

2014

Language:

english

File:

PDF, 518 KB

english, 2014

70

Application of the PROJECT Concept for Suppression of J Modulation to DEPT for 13 C-Multilabeled Analytes

Klika, Karel D.

Journal:

Organic Letters

Year:

2012

Language:

english

File:

PDF, 533 KB

english, 2012

71

Synthesis and Structural Characterization of Cis- and Trans-Fused 4a,5,6,7,8,8a-Hexahydro-2 H ,4 H -1,3-benzodithiines and Their 2-Methyl and 2,2-Dimethyl Derivatives

Pihlaja, Kalevi, Klika, Karel D., Sinkkonen, Jari, Ovcharenko, Vladimir V., Maloshitskaya, Olga, Sillanpää, Reijo, Czombos, József

Journal:

Journal of Organic Chemistry

Year:

2002

Language:

english

File:

PDF, 102 KB

english, 2002

72

Intramolecular Migration of Coordinated Platinum(II) from the N7 Site to the Exocyclic Amino Group in 9-Methyladenine

Viljanen, Jussi, Klika, Karel D., Sillanpää, Reijo, Arpalahti, Jorma

Journal:

Inorganic Chemistry

Year:

1999

Language:

english

File:

PDF, 30 KB

english, 1999

73

Formation and Characterization of a Multicomponent Equilibrium System Derived from cis - and trans -1-Aminomethylcyclohexane-1,2-diol

Hetényi, Anasztázia, Szakonyi, Zsolt, Klika, Karel D., Pihlaja, Kalevi, Fülöp, Ferenc

Journal:

Journal of Organic Chemistry

Year:

2003

Language:

english

File:

PDF, 165 KB

english, 2003

74

Frankiamide, a Highly Unusual Macrocycle Containing the Imide and Orthoamide Functionalities from the Symbiotic Actinomycete Frankia

Klika, Karel D., Haansuu, J. Pasi, Ovcharenko, Vladimir V., Haahtela, Kielo K., Vuorela, Pia M., Pihlaja, Kalevi

Journal:

Journal of Organic Chemistry

Year:

2001

Language:

english

File:

PDF, 55 KB

english, 2001

75

Identification of the Major Tautomer for an Etheno Adduct of 2,6-Diaminopurine by Determination of the Sign of n J H,C

Roslund, Mattias U., Virta, Piritta, Klika, Karel D.

Journal:

Organic Letters

Year:

2004

Language:

english

File:

PDF, 62 KB

english, 2004

76

Conformation of the Galactose Ring Adopted in Solution and in Crystalline Form as Determined by Experimental and DFT 1 H NMR and Single-Crystal X-ray Analysis

Roslund, Mattias U., Klika, Karel D., Lehtilä, Reko L., Tähtinen, Petri, Sillanpää, Reijo, Leino, Reko

Journal:

Journal of Organic Chemistry

Year:

2004

Language:

english

File:

PDF, 142 KB

english, 2004

77

Modeling NMR Parameters by DFT Methods as an Aid to the Conformational Analysis of cis-Fused 7a(8a)-Methyl Octa(hexa)hydrocyclopenta[ d ][1,3]oxazines and [3,1]benzoxazines

Tähtinen, Petri, Bagno, Alessandro, Klika, Karel D., Pihlaja, Kalevi

Journal:

Journal of the American Chemical Society

Year:

2003

Language:

english

File:

PDF, 287 KB

english, 2003

78

Unexpected Formation of a Spiro Acridine and Fused Ring System from the Reaction between an N -Acridinylmethyl-Substituted Thiourea and Bromoacetonitrile under Basic Conditions

Klika, Karel D., Bernát, Juraj, Imrich, Ján, Chomča, Igor, Sillanpää, Reijo, Pihlaja, Kalevi

Journal:

Journal of Organic Chemistry

Year:

2001

Language:

english

File:

PDF, 50 KB

english, 2001

79

Experimental and DFT 1 H NMR Study of Conformational Equilibria in trans -4‘,7-Dihydroxyisoflavan-4-ol and trans -Isoflavan-4-ol

Pihlaja, Kalevi, Tähtinen, Petri, Klika, Karel D., Jokela, Tuija, Salakka, Auli, Wähälä, Kristiina

Journal:

Journal of Organic Chemistry

Year:

2003

Language:

english

File:

PDF, 139 KB

english, 2003

80

Substitution Reactions of Platinum(II)−Nucleobase Complexes by Associative Mechanism Involving Pseudorotation of the Five-Coordinate Intermediate

Mikola, Marjaana, Klika, Karel D., Hakala, Anu, Arpalahti, Jorma

Journal:

Inorganic Chemistry

Year:

1999

Language:

english

File:

PDF, 145 KB

english, 1999

81

The self-disproportionation of the enantiomers (SDE) of methyl n-pentyl sulfoxide via achiral, gravity-driven column chromatography: a case study

Wzorek, Alicja, Klika, Karel D., Drabowicz, Józef, Sato, Azusa, Aceña, José Luis, Soloshonok, Vadim A.

Journal:

Organic & Biomolecular Chemistry

Year:

2014

Language:

english

File:

PDF, 681 KB

english, 2014

82

The assignment of the correct structures and conformational analysis of the isomeric t-5- and t-4-phenyl-t(c)-2-benzoyl-r-1-cyclohexanecarboxylic acids by NMR and FT-IR spectroscopy

Klika, Karel D., Tähtinen, Petri, Dahlqvist, Martti, Szabó, József A., Stájer, Géza, Sinkkonen, Jari, Pihlaja, Kalevi

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

2000

Language:

english

File:

PDF, 138 KB

english, 2000

83

Dynamic processes in platinum(II)–adenosine complexes. Preparation, NMR spectroscopic characterisation and crystal structure of isomeric PtII(dien)–adenosine complexes

Arpalahti, Jorma, Klika, Karel D., Sillanpää, Reijo, Kivekäs, Raikko

Journal:

Journal of the Chemical Society Dalton Transactions

Year:

1998

Language:

english

File:

PDF, 133 KB

english, 1998

84

Synthesis and hydrolytic stability of the α and β anomers of 4′-thio-2′-deoxyuridine and their 5-substituted analogs. Competition between the acid-catalysed depyrimidination and isomerisation to a 5-thiopyranoside nucleoside

Otter, Graham P., Elzagheid, Mohamed I., Jones, Garry D., MacCulloch, Alasdair C., Walker, Richard T., Oivanen, Mikko, Klika, Karel D.

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1998

Language:

english

File:

PDF, 198 KB

english, 1998

85

Substituent-controlled preference of carbonyl group–metal coordination in d8 metal complexes with non-symmetric pentadentate ligands. Structural and stereochemical aspects

Han, Jianlin, Ono, Taizo, Uekusa, Hidehiro, Klika, Karel D., Soloshonok, Vadim A.

Journal:

Dalton Transactions

Year:

2014

Language:

english

File:

PDF, 846 KB

english, 2014

86

A multinuclear NMR study of the restricted rotation in a bi-imidazole nucleoside †

Mäki, Jukka, Klika, Karel D., Sjöholm, Rainer, Kronberg, Leif

Journal:

Journal of the Chemical Society Perkin Transactions 1

Year:

2001

Language:

english

File:

PDF, 91 KB

english, 2001

87

Hybrid compounds generated by the introduction of a nogalamycin-producing plasmid into Streptomyces argillaceusElectronic supplementary information (ESI) available: edited GAUSSIAN output of DFT calculations and HyperChem file of the calculated structure. See http://www.rsc.org/suppdata/p1/b2/b200444p/

Kunnari, Tero, Klika, Karel D., Blanco, Gloria, M??ndez, Carmen, M??nts??l??, Pekka, Hakala, Juha, Sillanp????, Reijo, T??htinen, Petri, Salas, Jose, Ylihonko, Kristiina

Journal:

Journal of the Chemical Society Perkin Transactions 1

Year:

2002

Language:

english

File:

PDF, 194 KB

english, 2002

88

Platinum(ii)-bis(9-methyladenine) complexes; N1?N6 migration of Pt(ii) vs deamination of coordinated methyladenineElectronic supplementary information (ESI) available: general experimental details and NMR data for various Pt-coordinated nucleobase ligands. See http://www.rsc.org/suppdata/cc/b3/b315987f/

Klika, Karel D., Arpalahti, Jorma

Journal:

Chemical Communications

Year:

2004

Language:

english

File:

PDF, 97 KB

english, 2004

89

Synthesis and NMR characterization of the cis and trans isomers of [Ptii(N9-adeH)2(pz)2] and X-ray crystallography of the trans isomer

Klika, Karel D., Kivelä, Henri, Ovcharenko, Vladimir V., Nieminen, Ville, Sillanpää, Reijo, Arpalahti, Jorma

Journal:

Dalton Transactions

Year:

2007

Language:

english

File:

PDF, 228 KB

english, 2007

90

Conformational and complexational study of some maleonitrile mixed oxadithia crown ethers by NMR spectroscopy and molecular modelling

Kleinpeter, Erich, Grotjahn, Manuela, Klika, Karel D., Drexler, Hans-Joachim, Holdt, Hans-Jürgen

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

2001

Language:

english

File:

PDF, 317 KB

english, 2001

91

Coupling constants 1J(15N,31P) as a probe for the conformational equilibria of 2-amino-substituted 1,3,2λ5-oxazaphosphinan-2-ones †

Viljanen, Tapio, Klika, Karel D., Fülöp, Ferenc, Pihlaja, Kalevi

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1998

Language:

english

File:

PDF, 93 KB

english, 1998

92

Hybrid compounds derived from the combination of anthracycline and actinorhodin biosynthetic pathways

Kunnari, Tero, Kantola, Jaana, Ylihonko, Kristiina, Klika, Karel D., Mäntsälä, Pekka, Hakala, Juha

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1999

Language:

english

File:

PDF, 155 KB

english, 1999

93

Ethylidene-4,6-dimethoxycoumaran-3-one: the C2C8 double bond configuration

Klika, Karel D., Cheriyamundath, Sanith, Raghavan, Rahul, Megha, K.B., Banerji, Asoke, Owen, Robert W., Madassery, Joseph

Journal:

Tetrahedron Letters

Year:

2014

Language:

english

File:

PDF, 386 KB

english, 2014

94

Terminology Related to the Phenomenon ‘Self-Disproportionation of Enantiomers’ (SDE)

Soloshonok, Vadim A., Klika, Karel D.

Journal:

Helvetica Chimica Acta

Year:

2014

Language:

english

File:

PDF, 104 KB

english, 2014

95

A comprehensive examination of the self-disproportionation of enantiomers (SDE) of chiral amides via achiral, laboratory-routine, gravity-driven column chromatography

Suzuki, Yuya, Han, Jianlin, Kitagawa, Osamu, Aceña, José Luis, Klika, Karel D., Soloshonok, Vadim A.

Journal:

Year:

2015

Language:

english

File:

PDF, 376 KB

english, 2015

96

Hydrolytic Reactions of 3′-Deoxy-3′-thioinosylyl-(3′→ >5′)-uridine; An RNA Dinucleotide Containing a 3′- S -Phosphorothiolate Linkage

Elzagheid, Mohamed I., Oivanen, Mikko, Klika, Karel D., Jones, Bryan C. N. M., Cosstick, Richard, Lönnberg, Harri

Journal:

Nucleosides and Nucleotides

Year:

1999

Language:

english

File:

PDF, 721 KB

english, 1999

97

Identification of polyphenolic compounds in the flesh of Argan (Morocco) fruits

Khallouki, Farid, Haubner, Roswitha, Ricarte, Irvila, Erben, Gerhard, Klika, Karel, Ulrich, Cornelia M., Owen, Robert W.

Journal:

Year:

2015

Language:

english

File:

PDF, 358 KB

english, 2015

98

Changes in urinary metabolic profiles of colorectal cancer patients enrolled in a prospective cohort study (ColoCare)

Liesenfeld, David B., Habermann, Nina, Toth, Reka, Owen, Robert W., Frei, Eva, Böhm, Jürgen, Schrotz-King, Petra, Klika, Karel D., Ulrich, Cornelia M.

Journal:

Year:

2015

Language:

english

File:

PDF, 2.01 MB

english, 2015

99

(2R∗,3S∗,4S∗,2″R∗,3″S∗)-Guibourtinidol-(4α→8)-catechin, a biflavanoid procyanidin of the proguibourtinidin group from Senna macranthera: its relative stereochemistry and conformation

Klika, Karel D., Ricarte, Irvila, Trevisan, Maria Teresa Salles, de Vasconcelos Silva, Maria Goretti, Owen, Robert W.

Journal:

Tetrahedron: Asymmetry

Year:

2015

Language:

english

File:

PDF, 581 KB

english, 2015

100

Carbonyl group coordination preferences in square-planar NiII and PdII complexes of pentadentate ligands by electron-withdrawing/donating substituents

Han, Jianlin, Aceña, José Luis, Yasuda, Nobuhiro, Uekusa, Hidehiro, Ono, Taizo, Soloshonok, Vadim A., Klika, Karel D.

Journal:

Inorganica Chimica Acta

Year:

2015

Language:

english

File:

PDF, 1.17 MB

english, 2015