Zobrazeno 1 - 9
of 9
pro vyhledávání: '"George Wai-Kin Chan"'
Autor:
Mark E. Hemling, George Wai-Kin Chan, Henry M. Sarau, Charles W. DeBrosse, John Westley, Seymour Mong, Priscilla Offen, Alan J. Freyer
Publikováno v:
Journal of Natural Products. 56:116-121
Three new imidazole alkaloids, leucettamines A [1] and B [2] and leucettamidine [3], have been isolated from the Palauan sponge Leucetta microraphis. Their structures were established on the basis of extensive spectral analyses. Leucettamine A showed
Autor:
Dean L. Thureen, D. John Faulkner, Terry A. Francis, Priscilla Offen, Randall K. Johnson, John Westley, Nigel J. Pierce, George Wai-Kin Chan
Publikováno v:
The Journal of Organic Chemistry. 58:2544-2546
A novel compound, purpurone (1), with ATP-citrate lyase inhibitory activity, was isolated from the marine sponge Iotrochota sp. Its structure was established mainly on the basis of NMR spectroscopic data. Purpurone represents the first example of a n
Autor:
Mark E. Hemling, John Westley, Priscilla Offen, Charles W. DeBrosse, MacKenzie-LoCasto L, George Wai-Kin Chan, Berry D
Publikováno v:
Journal of natural products. 56(5)
Two novel pyrrolidine compounds, conioidines A [1] and B [2], have been isolated from the Texas plant, Chamaesaracha conioides (Solanaceae). Their structures were determined by spectroscopic methods and hydrolysis studies. Both natural products, like
Autor:
Peter W. Jeffs, Charles W. DeBrosse, George Wai-Kin Chan, Luciano Mueller, Lee Webb, Robert D. Sitrin
Publikováno v:
The Journal of Organic Chemistry. 51:4272-4278
Autor:
G. D. Roberts, Peter W. Jeffs, Charles W. DeBrosse, N. Holder, George Wai-Kin Chan, Robert D. Sitrin
Publikováno v:
The Journal of Organic Chemistry. 50:1726-1731
Publikováno v:
Journal of Heterocyclic Chemistry. 15:981-985
Homologous 4,5-dihydro-5-thioxo-1H-tetrazole-l-alkanoic and alkanesulfonic acids were prepared by reaction of sodium azide with methyl (carboxyalkyl)- and (sulfoalkyl) carbamodithioates, respectively. 4,5-Dihydro-5-thioxo-1H-tetrazole-i-alkanamides w
Autor:
Joseph R. Valenta, Walter W. Holl, George Wai-Kin Chan, Robert David Sitrin, John R. E. Hoover, Kenneth M. Snader, Lee Webb, John Joseph Dingerdissen
Publikováno v:
The Journal of antibiotics. 38(5)
A new antibacterial antibiotic complex, aridicin, was produced by a new genus, Kibdelosporangium aridum (SK&F-AAD-216). The individual factors, aridicins A, B and C, were isolated from the fermentation broth by an Amberlite XAD-7 resin extraction and
Autor:
Gerald D. Roberts, George Wai-Kin Chan, Joseph R. Valenta, Charles W. Debrosse, John Joseph Dingerdissen, R. John Stedman, Kenneth M. Snader, John R. E. Hoover, Raj J. Mehta, Robert D. Sitrin, Sue Rottschaefer, David B. Staiger
Publikováno v:
The Journal of antibiotics. 41(4)
A set of four cerebrosides was isolated from a Pachybasium species and purified by preparative reversed-phase HPLC. All four products displayed activity in a natural product screen aimed at detecting novel cell wall-active antifungal agents based on
Autor:
Albert J. Giovenella, Louis J. Nisbet, Lillian Phillips, Sarah F. Grappel, Kenneth M. Snader, Chapin F, Peter W. Jeffs, George Wai-Kin Chan, Robert David Sitrin
Publikováno v:
The Journal of antibiotics. 39(1)
The aglycone and two pseudoaglycones of aridicin A were prepared by selective hydrolysis and characterized, chemically and biologically. These new analogs demonstrate improved activities in vitro over the parent antibiotics against methicillin sensit