Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Siewbee Ng"'
Autor:
Mark S. Butler, Siewbee Ng, K. Yoganathan, Shugeng Cao, Antony D. Buss, Srinivasulu Aitipamula, Stephen R. Whitton, Sharon C. Crasta
Publikováno v:
Tetrahedron. 64:10181-10187
Bioassay-guided isolation using an MRSA whole cell assay yielded four novel benzophenone dimers, microsphaerins A-D (1-4), from two Singapore isolates of the soil anamorph Microsphaeropsis sp. The structures of 1-4 were elucidated on the basis of spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab595e21f0497fb24feaa9e1c23403a9
https://doi.org/10.1016/j.tet.2008.08.038
https://doi.org/10.1016/j.tet.2008.08.038
Autor:
Jung-Rae Rho, Hyukjae Choi, Eun-Hee Kim, Sok Peng Ng, K. Yoganathan, Gurusamy Subramaniam, Siewbee Ng, Mark S. Butler, William H. Gerwick, Antony D. Buss
Gargantulide A (1), an extremely complex 52-membered macrolactone, was isolated from Streptomyces sp. A42983 and displayed moderate activity against MRSA. The planar structure of 1 was determined using 2D NMR, and its stereochemistry was partially es
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5bcf9fb6f5abc0ab2dcb733e1f1be17
https://europepmc.org/articles/PMC5125438/
https://europepmc.org/articles/PMC5125438/
Autor:
Shugeng Cao, Yicun Huang, and Antony D. Buss, K. Yoganathan, Christine Rossant, Siewbee Ng, Robert P. Glover, Jagadese J. Vittal, Mark S. Butler
Publikováno v:
Journal of Natural Products. 67:1681-1684
An extract from the fungus Emericella aurantiobrunnea was found to compete with macrophage inflammatory protein (MIP)-1alpha for binding to human CCR5 in a scintillation proximity assay (SPA). Bioassay-guided fractionation led to the isolation of var
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5005f1fb00eb06a78e4c785c13194fd0
https://doi.org/10.1021/np049844c
https://doi.org/10.1021/np049844c
Autor:
Kia-Ngee Low, Shugeng Cao, Sharon C. Crasta, and Antony D. Buss, Robert P. Glover, Siewbee Ng, Mark S. Butler
Publikováno v:
Journal of Natural Products. 69:707-709
Bioassay-directed fractionation using a glucocorticoid receptor assay led to the isolation of two new, weakly active polyprenylated acylphloroglucinol derivatives, sundaicumones A (1) and B (2), from the leaves of Calophyllum sundaicum collected in S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::969a4cf1af730f85c85958b5694d5742
https://doi.org/10.1021/np050528n
https://doi.org/10.1021/np050528n
Autor:
Antony D. Buss, Brinda Somanadhan, Siewbee Ng, Chungyan Leong, Mark S. Butler, Stephen R. Whitton
Publikováno v:
Journal of natural products. 74(6)
A prefractionated Streptomyces-derived extract was initially identified as being active using a luciferase-based AMP-activated protein kinase (AMPK) assay. Bioassay-guided fractionation led to the isolation of the new compound quinazolin-4(3H)-one (1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::877fb2a48185d163d071a73ce641eb07
https://pubmed.ncbi.nlm.nih.gov/21639131
https://pubmed.ncbi.nlm.nih.gov/21639131
Autor:
Antony D. Buss, Alex L. S. Yew, Christine Rossant, Simon P. B. Ovenden, Jacinto C. Regalado Jr., Mark S. Butler, Robert P. Glover, Siewbee Ng, Doel D. Soejarto
Publikováno v:
Tetrahedron Letters. 42:7695-7697
An investigation into the chemical constituents of a crude MeOH extract from a specimen of Actephila excelsa (family Euphorbiaceae), led to the isolation of two new epimeric aromatic terpenoids, actephilol A 1 and epiactephilol A 2. The gross structu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b875630c2f9c9d7bb0cd066d108ecdf
https://doi.org/10.1016/s0040-4039(01)01628-8
https://doi.org/10.1016/s0040-4039(01)01628-8
Autor:
Siewbee Ng, Robert P. Glover, Mark S. Butler, Alex L. S. Yew, Jacinto C. Regalado Jr., Antony D. Buss, Simon P. B. Ovenden, Doel D. Soejarto, Christine Rossant
Publikováno v:
ChemInform. 33
An investigation into the chemical constituents of a crude MeOH extract from a specimen of Actephila excelsa (family Euphorbiaceae), led to the isolation of two new epimeric aromatic terpenoids, actephilol A 1 and epiactephilol A 2. The gross structu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae4beb0c25f5f42ac73d71ba44564109
https://doi.org/10.1002/chin.200205174
https://doi.org/10.1002/chin.200205174
Autor:
Chungyan Leong, Yicun Huang, Jin-Rui Dai, Siewbee Ng, Bingying Guo, Waichung Ong, Brad K. Carte
Publikováno v:
Journal of Natural Products. 63:602-604
Two novel human cytomegalovirus protease inhibitors, cytonic acids A (1) and B (2), have been isolated from the solid-state fermentation of the endophytic fungi Cytonaema sp. Their structures as p-tridepside isomers were elucidated by MS and NMR meth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ecc0aedea302d9c85aa8d50fa8795a4b
https://doi.org/10.1021/np990467r
https://doi.org/10.1021/np990467r
Autor:
K. Yoganathan, Yicun Huang, Lay-Kien Yang, Antony D. Buss, Christine Rossant, Siewbee Ng, Mark S. Butler
Publikováno v:
The Journal of antibiotics. 57(1)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9faa1189b8cd1288d1a9dbce1d29989e
https://pubmed.ncbi.nlm.nih.gov/15032487
https://pubmed.ncbi.nlm.nih.gov/15032487
Publikováno v:
Phytochemistry. 64(5)
Three compounds, 2,3-dihydroxy-4-methoxy-6,6,9-trimethyl-6H-dibenzo[b,d]pyran (1), 8-methoxy-2-methyl-2-(4-methyl-3-pentenyl)-2H-1-benzopyran-6-ol (2) and 4-methoxy-3-(3-methyl-2-butenyl)-benzoic acid (3), have been isolated from Wigandia urens. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3edb82d3efc3a573b65f97f36e925d8d
https://pubmed.ncbi.nlm.nih.gov/14561515
https://pubmed.ncbi.nlm.nih.gov/14561515