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51

Doriasenine, a pyrrolizidine alkaloid from Senecio doria

E. Röder, H. Wiedenfeld, A. Pfitzer

Journal:

Year:

1988

Language:

english

File:

PDF, 164 KB

english, 1988

52

Taxanes from Taxus chinensis

Zong Ping Zhang, Helmut Wiedenfeld, Erhard Röder

Journal:

Year:

1995

Language:

english

File:

PDF, 269 KB

english, 1995

53

Pyrrolizidine alkaloids from Lithospermum officinale

L. Krenn, H. Wiedenfeld, E. Roeder

Journal:

Year:

1994

Language:

english

File:

PDF, 268 KB

english, 1994

54

Diterpene glycosides from Iphiona aucheri

E. Roeder, T. Bourauel, U. Meier, H. Wiedenfeld

Journal:

Year:

1994

Language:

english

File:

PDF, 251 KB

english, 1994

55

The binding properties of cyclophane dimers

Ronald Breslow, Peter J. Duggan, David Wiedenfeld, Sherman T. Waddell

Journal:

Tetrahedron Letters

Year:

1995

Language:

english

File:

PDF, 183 KB

english, 1995

56

Reaction of 2,3-bis(methylthio)pyrrolo[1,2-a]benzimidazol-1-one with BrRe(CO)3(THF)2: X-ray diffraction structure, redox chemistry, and luminescence behavior of fac-BrRe(CO)3{N,S-2,3-bis(methylthio)pyrrolo[1,2-a]benzimidazol-1-one}

Guanmin Wu, David R. Glass, Daniel May, William H. Watson, David Wiedenfeld, Michael G. Richmond

Journal:

Journal of Organometallic Chemistry

Year:

2005

Language:

english

File:

PDF, 201 KB

english, 2005

57

Synthesis, electrochemistry, MO properties, and X-ray diffraction structures of the new redox-active diphosphine ligand 2-(2-thienylidene)-4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione (tbpcd) and the rhenium compound fac-BrRe(CO)3(tbpcd)

William H. Watson, David Wiedenfeld, Aparna Pingali, Bhaskar Poola, Michael G. Richmond

Journal:

Year:

2007

Language:

english

File:

PDF, 317 KB

english, 2007

58

Unexpected dimeric products from the amidomethylation of pentasubstituted benzenes

David Wiedenfeld, Mark A. Minton, Vladimir N. Nesterov, David R. Glass, Crystal L. Montoya

Journal:

Tetrahedron Letters

Year:

2004

Language:

english

File:

PDF, 397 KB

english, 2004

59

Effects of driving force on the rates of intramolecular and bimolecular electron-transfer reactions

Harry B Gray, Jay R Winkler, David Wiedenfeld

Journal:

Coordination Chemistry Reviews

Year:

2000

Language:

english

File:

PDF, 144 KB

english, 2000

60

Syntheses of mono- and di-pyrenyl perfluoroalkanes

David Wiedenfeld, Sandip Niyogi, Debasis Chakrabarti

Journal:

Journal of Fluorine Chemistry

Year:

2000

Language:

english

File:

PDF, 111 KB

english, 2000

61

(+)-Isobicyclogermacrenal from aristolochia manshuriensis

Gerhard Rücker, Ralf Mayer, Helmut Wiedenfeld, Bo S. Chung, Andrea Güllmann

Journal:

Year:

1987

Language:

english

File:

PDF, 172 KB

english, 1987

62

Pyrrolizidine alkaloids from Senecio cacaliaster

Erhard Roeder, Helmut Wiedenfeld, Ruth Britz-Kirstgen

Journal:

Year:

1984

Language:

english

File:

PDF, 253 KB

english, 1984

63

Pyrrolizidine alkaloids from seeds of Crotalaria scassellatii

Helmut Wiedenfeld, Erhard Roeder, Edzard Anders

Journal:

Year:

1985

Language:

english

File:

PDF, 257 KB

english, 1985

64

Pyrrolizidine alkaloids from Alkanna tinctoria

Erhard Roeder, Helmut Wiedenfeld, Rainer Schraut

Journal:

Year:

1984

Language:

english

File:

PDF, 197 KB

english, 1984

65

Isolierung und strukturaufklärung des alkaloids fuchsisenecionin aus Senecio fuchsii

Erhard Röder, Helmut Wiedenfeld

Journal:

Year:

1977

File:

PDF, 231 KB

1977

66

Das pyrrolizidinalkaloid senecionin aus Senecio fuchsii

Helmut Wiedenfeld, Erhard Röder

Journal:

Year:

1979

Language:

german

File:

PDF, 208 KB

german, 1979

67

Pyrrolizidine alkaloids from Ageratum houstonianum Mill

Helmut Wiedenfeld, Adolfo Andrade-Cetto

Journal:

Year:

2001

Language:

english

File:

PDF, 103 KB

english, 2001

68

Pyrrolizidine alkaloids from critonia morifolia

H Wiedenfeld, A.andrade Cetto

Journal:

Year:

1998

Language:

english

File:

PDF, 137 KB

english, 1998

69

Quinoline and acridine templates in selective steroid chlorinations

Ronald Breslow, David Wiedenfeld

Journal:

Tetrahedron Letters

Year:

1993

Language:

english

File:

PDF, 259 KB

english, 1993

70

Halogenation effects on the conformational properties of alkanes

David Wiedenfeld, Wenjian Xu, Sandip Niyogi

Journal:

Tetrahedron Letters

Year:

2003

Language:

english

File:

PDF, 149 KB

english, 2003

71

AMBER force field parameters for the trimethylanilinium cation

Hans-Jürgen Thiem, David J. Wiedenfeld, Jung-Goo Lee, Richard A. Friesner

Journal:

Bioorganic & Medicinal Chemistry Letters

Year:

1992

Language:

english

File:

PDF, 300 KB

english, 1992

72

Effects of Prairie Fragmentation on the Nest Success of Breeding Birds in the Midcontinental United States

James R. Herkert, Dan L. Reinking, David A. Wiedenfeld, Maiken Winter, John L. Zimmerman, William E. Jensen, Elmer J. Finck, Rolf R. Koford, Donald H. Wolfe, Steve K. Sherrod, M. Alan Jenkins, John Fa

Journal:

Conservation Biology

Year:

2003

Language:

english

File:

PDF, 930 KB

english, 2003

73

Variation in nutrient limitation of lotic and lentic algal communities in a Texas (USA) river

Emily H. Stanley, Robert A. Short, James W. Harrison, Robert Hall, R.Charles Wiedenfeld

Journal:

Year:

1990

Language:

english

File:

PDF, 777 KB

english, 1990

74

Physical health correlates of Type A behavior in children and adolescents

Jean R. Eagleston, Kathleen Kirmil-Gray, Carl E. Thoresen, Sue A. Wiedenfeld, Paul Bracke, Lorchen Heft, Bruce Arnow

Journal:

Journal of Behavioral Medicine

Year:

1986

Language:

english

File:

PDF, 1.14 MB

english, 1986

75

The shikonin derivatives and pyrrolizidine alkaloids in hairy root cultures ofLithospermum canescens(Michx.) Lehm.

A. Pietrosiuk, K. Sykłowska-Baranek, H. Wiedenfeld, R. Wolinowska, M. Furmanowa, E. Jaroszyk

Journal:

Plant Cell Reports

Year:

2006

Language:

english

File:

PDF, 302 KB

english, 2006

76

Current status of alien vertebrates in the Galápagos Islands: invasion history, distribution, and potential impacts

R. Brand Phillips, David A. Wiedenfeld, Howard L. Snell

Journal:

Biological Invasions

Year:

2012

Language:

english

File:

PDF, 347 KB

english, 2012

77

Assessing the potential impact of wind turbines on the endangered Galapagos PetrelPterodroma phaeopygiaat San Cristóbal Island, Galapagos

Francisco Cruz-Delgado, David A. Wiedenfeld, José A. González

Journal:

Biodiversity and Conservation

Year:

2010

Language:

english

File:

PDF, 340 KB

english, 2010

78

Synthesis and X-ray structural investigations of 2-amino-7-methyl-4-(1-naphthyl)-5-oxo4H,5H-pyrano[4,3-b]pyran-3-carbonitrile and 2-amino-4-(1-naphthyl)-5-oxo-4H,5Hpyrano[3,2-c]chromene-3-carbonitrile

Vladimir N. Nesterov, David Wiedenfeld, Svitlana V. Nesterova, Lee M. Daniels

Journal:

Journal of Chemical Crystallography

Year:

2005

Language:

english

File:

PDF, 104 KB

english, 2005

79

Toxicity of pyrrolizidine alkaloids to humans and ruminants

Helmut Wiedenfeld, John Edgar

Journal:

Phytochemistry Reviews

Year:

2011

Language:

english

File:

PDF, 430 KB

english, 2011

80

Absolute configuration of the pyrrolizidine alkaloid acetylgynuramine

Helmut Wiedenfeld, Armin Kirfel, Erhard Röder, Georg Will

Journal:

Year:

1983

Language:

english

File:

PDF, 240 KB

english, 1983

81

Camptothecin and 10-hydroxycamptothecin in callus and plantlets of t Camptotheca acuminata

Helmut Wiedenfeld, Miroslawa Furmanowa, Erhard Roeder, Joanna Guzewska, Wlodzimierz Gustowski

Journal:

Plant Cell, Tissue and Organ Culture

Year:

1997

Language:

english

File:

PDF, 47 KB

english, 1997

82

4-(1,4-Dimethoxy-2-naphthyl)-4- hydroxycyclohexanone and its ethylene ketal

David Wiedenfeld, Wu Xiao, Philip W. Gravelle

Journal:

Journal of Chemical Crystallography

Year:

1999

Language:

english

File:

PDF, 76 KB

english, 1999

83

2-[(trifluoroacetyl)amino]benzoquinone and the hydrochloride and perchlorate salts of 2-aminohydroquinone

David Wiedenfeld, Mark Minton, Vladimir Nesterov, Christine Montoya

Journal:

Journal of Chemical Crystallography

Year:

2004

Language:

english

File:

PDF, 89 KB

english, 2004

84

ChemInform Abstract: Pyrrolizidine Alkaloids in Plants Used in the Traditional Medicine of Madagascar and the Mascarene Islands

E. Roeder, H. Wiedenfeld

Journal:

Year:

2012

File:

PDF, 18 KB

2012

85

Flavonol glycosides from Equisetum myriochaetum

Helmut Wiedenfeld, Adolfo Andrade Cetto, Christina Perez Amador

Journal:

Biochemical Systematics and Ecology

Year:

2000

Language:

english

File:

PDF, 79 KB

english, 2000

86

Irrigation guidelines based on historical weather data in the Lower Rio Grande Valley of Texas

Juan Enciso, Bob Wiedenfeld

Journal:

Agricultural Water Management

Year:

2005

Language:

english

File:

PDF, 97 KB

english, 2005

87

Effects of irrigation water salinity and electrostatic water treatment for sugarcane production

Journal:

Agricultural Water Management

Year:

2008

Language:

english

File:

PDF, 199 KB

english, 2008

88

Subsurface drip irrigation of onions: Effects of drip tape emitter spacing on yield and quality

Juan Enciso, John Jifon, Bob Wiedenfeld

Journal:

Agricultural Water Management

Year:

2007

Language:

english

File:

PDF, 380 KB

english, 2007

89

Hypoglycemic effect of Acosmium panamense bark on streptozotocin diabetic rats

Adolfo Andrade-Cetto, Helmut Wiedenfeld

Journal:

Journal of Ethnopharmacology

Year:

2004

Language:

english

File:

PDF, 131 KB

english, 2004

90

Hypoglycemic effect of Malmea depressa root on streptozotocin diabetic rats

Adolfo Andrade-Cetto, Eddy Martínez-Zurita, Helmut Wiedenfeld

Journal:

Journal of Ethnopharmacology

Year:

2005

Language:

english

File:

PDF, 179 KB

english, 2005

91

Hypoglycemic effect of Cecropia obtusifolia Bertol aqueous extracts on type 2 diabetic patients

Ma. Cristina Revilla-Monsalve, Adolfo Andrade-Cetto, Miguel Angel Palomino-Garibay, Helmut Wiedenfeld, Sergio Islas-Andrade

Journal:

Journal of Ethnopharmacology

Year:

2007

Language:

english

File:

PDF, 231 KB

english, 2007

92

Hypoglycemic effect of Tournefortia hirsutissima L., on n-streptozotocin diabetic rats

Adolfo Andrade-Cetto, Cristina Revilla-Monsalve, Helmut Wiedenfeld

Journal:

Journal of Ethnopharmacology

Year:

2007

Language:

english

File:

PDF, 262 KB

english, 2007

93

Chronic hypoglycemic effect of Malmea depressa root on n5-streptozotocin diabetic rats

Adolfo Andrade-Cetto, Eddy Martínez-Zurita, Ana Soto-Constantino, Cristina Revilla-Monsalve, Helmut Wiedenfeld

Journal:

Journal of Ethnopharmacology

Year:

2008

Language:

english

File:

PDF, 136 KB

english, 2008

94

Long term fertilization effects on ‘Rio Red’ grapefruit yield and shape on a heavy textured calcareous soil

Bob Wiedenfeld, Julian Sauls

Journal:

Scientia Horticulturae

Year:

2008

Language:

english

File:

PDF, 336 KB

english, 2008

95

Onion yield and quality response to two irrigation scheduling strategies

Juan Enciso, Bob Wiedenfeld, John Jifon, Shad Nelson

Journal:

Scientia Horticulturae

Year:

2009

Language:

english

File:

PDF, 216 KB

english, 2009

96

Scheduling water application on drip irrigated sugarcane

Journal:

Agricultural Water Management

Year:

2004

Language:

english

File:

PDF, 162 KB

english, 2004

97

Hypoglycemic effect of Equisetum myriochaetum aerial parts on type 2 diabetic patients

Ma.Cristina Revilla, Adolfo Andrade-Cetto, Sergio Islas, Helmut Wiedenfeld

Journal:

Journal of Ethnopharmacology

Year:

2002

Language:

english

File:

PDF, 78 KB

english, 2002

98

4-Ethoxymethylphenol: a novel phytoestrogen that acts as an agonist for human estrogen receptors

Virginia Pearce, Zafar Nawaz, Wu Xiao, David Wiedenfeld, Nick Boyle, Don Smith

Journal:

The Journal of Steroid Biochemistry and Molecular Biology

Year:

2003

Language:

english

File:

PDF, 172 KB

english, 2003

99

GALÁPAGOS: A Natural History. By John Kricher.

Melissa Wiedenfeld

Journal:

Geographical Review

Year:

2010

Language:

english

File:

PDF, 92 KB

english, 2010

100

Emotional and temperamental correlates of Type A in children and adolescents

Lorchen Heft, Carl E. Thoresen, Kathleen Kirmil-Gray, Sue A. Wiedenfeld, Jean R. Eagleston, Paul Bracke, Bruce Arnow

Journal:

Journal of Youth and Adolescence

Year:

1988

Language:

english

File:

PDF, 851 KB

english, 1988