Zobrazeno 1 - 10
of 16
pro vyhledávání: '"David J, Waterhouse"'
Autor:
Kevin M. Maloney, Aaron M. Whittaker, David J. Waterhouse, Neil A. Strotman, Mark A. Huffman, Sumei Ren, Christopher C. Nawrat, Hao Yang
Publikováno v:
Organic Process Research & Development. 25:516-521
We report the synthesis of the carbon-14-labeled unnatural nucleoside islatravir, an investigational HIV drug, through a one-pot biocatalytic cascade starting from acetaldehyde-2-14C. Combining enz...
Publikováno v:
Journal of Labelled Compounds and Radiopharmaceuticals. 59:294-296
Tritium tracers are frequently used in biological assays during the drug discovery process because of their high specific activity and relative ease of synthesis. However, this high specific activity, along with other contributing factors, can lead t
Publikováno v:
Journal of Labelled Compounds and Radiopharmaceuticals. 58:261-263
Tritium radiopharmaceuticals are often used in drug development because of their desirable specific activity. The inherent instability of these radioactive tracers often leads to a requirement to purify prior to use. Purification methodologies such a
Publikováno v:
Journal of Labelled Compounds and Radiopharmaceuticals. 58:177-179
Metformin is currently prescribed worldwide to treat type 2 diabetes, and therefore, radiolabeled [(14) C] metformin is often prepared for clinical comparisons of new drug candidates. Prior to using the radiolabeled metformin, the purity needs to be
Publikováno v:
Journal of Analytical Sciences, Methods and Instrumentation. :167-172
With the ever increasing complexity of active pharmaceutical ingredient (API) preparations, more potential genotoxic impurities (PGI’s) are being observed. It is thus necessary to determine if these PGI’s are present in the final API’s, and if
Publikováno v:
Journal of labelled compoundsradiopharmaceuticals. 59(7)
Tritium tracers are frequently used in biological assays during the drug discovery process because of their high specific activity and relative ease of synthesis. However, this high specific activity, along with other contributing factors, can lead t
Autor:
Larry K. Keefer, David J. Waterhouse, Joseph Ivanic, Jack R. Collins, Gwendolyn N. Chmurny, John R. Klose, Yan Ni Wang, Judith L. Flippen-Anderson, D. Scott Bohle, Joseph E. Saavedra, Challice L. Bonifant, Keith M. Davies, Jeffrey R. Deschamps
Publikováno v:
Journal of the American Chemical Society. 127:5388-5395
Here, we explore the chemistry of the previously undocumented E form of diazeniumdiolates having the structure R(1)R(2)NN(O)=NOR(3). Reported crystallographic studies have uniformly revealed the Z configuration, and our attempts to observe a Z --> E
Autor:
David J. Waterhouse, A. Paul Krapcho
Publikováno v:
Synthetic Communications. 28:3415-3422
Treatment of fluoroanthracene-9,10-diones, fluorobenz[g]isoquinoline-5,10-diones and 1- or 4-fluoronitrobenzenes with sodium trimethylsilanoate in THF followed by acidification readily yields the corresponding hydroxyl analogues.
Autor:
A. Paul Krapcho, Ernesto Menta, Abdelhakim Hammach, David J. Waterhouse, Silvano Spinelli, Ambrogio Oliva, Roberto Di Domenico
Publikováno v:
Scopus-Elsevier
Benzylic zinc reagents add with high regioselectivity to 1-(phenoxycarbonyl) salts of methyl nicotinate to yield methyl-1-(phenoxylcarbonyl)-4-benzyl-1,4-dihydronicotinates. The dihydronicotinates on heating with sulfur in decalin afford methyl 4-ben
ChemInform Abstract: General Synthetic Pathway to Oxygenated 3-Methylbenz[g]isoquinoline-5,10-diones
Autor:
David J. Waterhouse, A. Paul Krapcho
Publikováno v:
ChemInform. 30