Author

Richard G. Powell

Observed names: R Powell, R. G. POWELL, R. G. Powell, R. Powell, R.G. Powell, RICHARD G. POWELL, Richard Grant Powell

Observed institutions: Agricultural Research Service, United States Department of Agriculture, University of Kentucky, University of St Andrews, National Center for Agricultural Utilization Research, University of Oxford

OpenAlex ID: A5089911564

Glucosinolate composition of seeds from 297 species of wild plants

1991 · Melvin E. Daxenbichler, Gayland F. Spencer, et al. · Phytochemistry · 361

Antitumor Alkaloids from Cephalotaxus harringtonia: Structure and Activity

1972 · R.G. Powell, D. Weisleder, et al. · Journal of Pharmaceutical Sciences · 217

Structures of harringtonine, isoharringtonine, and homoharringtonine

1970 · R.G. Powell, D. Weisleder, et al. · Tetrahedron Letters · 178

Antileukemic alkaloids from Taxus wallichiana Zucc

1981 · Roger W. Miller, Richard G. Powell, et al. · The Journal of Organic Chemistry · 149

Analysis of ergopeptine alkaloids in endophyte-infected tall fescue

1988 · Shelly G. Yates, Richard G. Powell · Journal of Agricultural and Food Chemistry · 144

Use of Potato Disc and Brine Shrimp Bioassays to Detect Activity and Isolate Piceatannol as the Antileukemic Principle from the Seeds of Euphorbia lagascae

1984 · N. R. Ferrigni, J. L. McLaughlin, et al. · Journal of Natural Products · 140

Modification and Evaluation of the Potato Disc Assay and Antitumor Screening of Euphorbiaceae Seeds

1982 · N. R. Ferrigni, J. E. Putnam, et al. · Journal of Natural Products · 131

19-Hydroxybaccatin III, 10-Deacetylcephalomannine, and 10-Deacetyltaxol: New Antitumor Taxanes From Taxus wallichiana

1981 · Jerry L. McLaughlin, Roger W. Miller, et al. · Journal of Natural Products · 125

Naturally-Occurring and Synthetic Loline Alkaloid Derivatives: Insect Feeding Behavior Modification and Toxicity2

1991 · W. E. Riedell, R. E. Kieckhefer, et al. · Journal of Entomological Science · 108

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Structure of cephalotaxine and related alkaloids

1969 · R.G. Powell, D. Weisleder, et al. · Tetrahedron Letters · 108

Structure-activity study of cytotoxicity and microtubule assembly in vitro by taxol and related taxanes

1982 · Jerome Parness, David G.I. Kingston, et al. · Biochemical and Biophysical Research Communications · 102

Analyses of selected endophyte-infected grasses for the presence of loline-type and ergot-type alkaloids

1993 · Mark R. TePaske, Richard G. Powell, et al. · Journal of Agricultural and Food Chemistry · 93

Alkaloid toxins in endophyte‐infected grasses

1993 · Richard G. Powell, Richard J. Petroski · Natural Toxins · 93

Alkaloids of Stipa robusta (sleepygrass) infected with an Acremonium endophyte

1992 · Richard J. Petroski, Richard G. Powell, et al. · Natural Toxins · 93

Crown Gall Tumor Disc Bioassay

1980 · Alan G. Galsky, James P. Wilsey, et al. · PLANT PHYSIOLOGY · 71

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Deoxyharringtonine, a new antitumor alkaloid from Cephalotaxus: Structure and synthetic studies

1972 · K.L. Mikolajczak, R.G. Powell, et al. · Tetrahedron · 70

Alkaloids of cephalotaxus harringtonia var drupacea. 11-Hydroxycephalotaxine and drupacine

1974 · Richard G. Powell, Richard V. Madrigal, et al. · The Journal of Organic Chemistry · 69

Sesbanimide, a potent antitumor substance from Sesbania drummondii seed

1983 · Richard G. Powell, Cecil R. Smith, et al. · Journal of the American Chemical Society · 68

Analysis of loline alkaloids in endophyte-infected tall fescue by capillary gas chromatography

1990 · Shelly G. Yates, Richard J. Petroski, et al. · Journal of Agricultural and Food Chemistry · 66

In Vitro and In Vivo Ruminal and Physiological Responses to Endophyte-Infected Tall Fescue

1993 · M.L. Westendorf, G.E. Mitchell, et al. · Journal of Dairy Science · 64

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Structures of homoerythrina alkaloids from cephalotaxus harringtonia

1972 · R.G. Powell · Phytochemistry · 62

A new fumonisin from solid cultures of Fusarium moniliforme

1992 · Ronald D. Plattner, David Weisleder, et al. · Mycopathologia · 60

Isolation, Semi-Synthesis, and Nmr Spectral Studies of Loline Alkaloids

1989 · R. J. Petroski, S. G. Yates, et al. · Journal of Natural Products · 58

Isolation of resveratrol from Festuca versuta and evidence for the widespread occurrence of this stilbene in the poaceae

1994 · Richard G. Powell, Mark R. TePaske, et al. · Phytochemistry · 55

Specific Heat Measurements on Lysozyme, Chymotrypsinogen, and Ovalbumin in Aqueous Solution and in Solid State.

1974 · J. Suurkuusk, Per Martinson, et al. · Acta chemica Scandinavica/Acta chemica Scandinavica. B, Organic chemistry and biochemistry/Acta chemica Scandinavica. A, Physical and inorganic chemistry/Acta chemica Scandinavica. Series B. Organic chemistry and biochemistry/Acta chemica Scandinavica. Series A, Physical and inorganic chemistry · 55

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Works count: 129

Citation count: 4,626

H-index: 39

I10-index: 92