Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Swapan K. Chaudhuri"'
Publikováno v:
Natural Product Letters. 16:39-45
Bioassay-guided fractionation allowed the isolation of two new cytotoxic ent-kaurene diterpenoids, licamichauxiioic-A and -B acids (1 and 2) from the root extract of Licania michauxii Prance (Chrysobalanaceae). They were characterized as ent-15-oxo-9
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12fc993e4c50ab8b6f7fde2525f6e9dc
https://doi.org/10.1080/1057563029001/4836
https://doi.org/10.1080/1057563029001/4836
Publikováno v:
Bioorganic & Medicinal Chemistry. 8:1749-1755
Tyrosinase inhibitory activity of flavonols, galangin, kaempferol and quercetin, was found to come from their ability to chelate copper in the enzyme. In contrast, the corresponding flavones, chrysin. apigenin and luteolin, did not chelate copper in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f06ae2847bca7fb1e0d838510b7d14a2
https://doi.org/10.1016/s0968-0896(00)00102-4
https://doi.org/10.1016/s0968-0896(00)00102-4
Autor:
Swapan K. Chaudhuri, Joan Hare, Nancy J. Rutkoski, Ramesh Babu Badisa, Elsa Pilarinou, Cathy W. Levenson
Publikováno v:
Cancer Letters. 149:61-68
An extract of Licania michauxii Prance root was found to be cytotoxic to cultured human hepatoma (HepG2) and colon carcinoma (Caco-2) cells. Morphological and nuclear characteristics of treated cells were consistent with necrotic death. Increases in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e875af92c0584856fbd3ef8c41a3496
https://doi.org/10.1016/s0304-3835(99)00347-x
https://doi.org/10.1016/s0304-3835(99)00347-x
Publikováno v:
Food chemistry. 165
Carotenoid identification and quantitation is critical for the development of improved nutrition plant varieties. Industrial analysis of carotenoids is typically carried out on multiple crops with potentially thousands of samples per crop, placing cr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4761dc858263f8f29d7ba4dbefc3d4bb
https://pubmed.ncbi.nlm.nih.gov/25038701
https://pubmed.ncbi.nlm.nih.gov/25038701
Autor:
Hiroyuki Haraguchi, Takashi Saito, Yumi Kubo, Isao Kubo, Tetsuya Ogura, Yolanda Sanchez, Swapan K. Chaudhuri, Harumi Ishikawa
Publikováno v:
Planta Medica. 62:427-430
Four sesquiterpenoids, beta-caryophyllene, beta-caryophyllene 4,5 alpha-oxide, 7-hydroxy-3,4-dihydrocadalin, and 7-hydroxycadalin, isolated from the dried flower of Heterotheca inuloides Cass. (Asteraceae), have been found to exhibit cytotoxic activi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f40967afe91bd61b1c54dd7f6b85d4ff
https://doi.org/10.1055/s-2006-957932
https://doi.org/10.1055/s-2006-957932
Autor:
Swapan K. Chaudhuri, Li Huang, Fekadu Fullas, Daniel M. Brown, Mansukh C. Wani, Monroe E. Wall, John C. Tucker, Christopher W. W. Beecher, A. Douglas Kinghorn
Publikováno v:
Journal of Natural Products. 58:1966-1969
A new pterocarpan, (+)-3,4-dihydroxy-8,9-methylenedioxypterocarpan [1], was isolated from the flowers of Petalostemon purpureus by a DNA strand-scission assay-guided fractionation procedure. Compound 1 demonstrated activity in a standard in vitro DNA
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::048f9b380d32895f0ad08e92119b8afd
https://doi.org/10.1021/np50126a030
https://doi.org/10.1021/np50126a030
Autor:
Swapan K. Chaudhuri, Fekadu Fullas, Daniel M. Brown, Mansukh C. Wani, Monroe E. Wall, Lining Cai, Woongchon Mar, Sang Kook Lee, Yingde Luo, Kyaw Zaw, Harry H. S. Fong, John M. Pezzuto, A. Douglas Kinghorn
Publikováno v:
Journal of Natural Products. 58:1-9
Pentacyclic triterpenoids based on the taraxer-14-ene skeleton with a C-28 attached carboxylic acid group have been isolated from the roots of Maprounea africana. These compounds were identified as 1 beta,2 alpha-dihydroxyaleuritolic acid 2,3-bis-p-h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::623f2b076c3751f59dc7a531959ebd15
https://doi.org/10.1021/np50115a001
https://doi.org/10.1021/np50115a001
Publikováno v:
Planta Medica. 60:218-221
By bioassay directed fractionation, four sesquiterpenoids 1-4 were isolated as antimicrobial agents from the dried flowers of Heterotheca inuloides, a Mexican medicinal plant locally known as "arnica". 7-Hydroxy-3,4-dihydrocadalin (3) and 7-hydroxyca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ca6220312caa59ecf06625479faaf8f
https://doi.org/10.1055/s-2006-959462
https://doi.org/10.1055/s-2006-959462
Autor:
Swapan K. Chaudhuri, Tetsuya Ogura, Yolanda Sanchez, Isao Kubo, Kyoko Ishiguro, Ikuyo Kinst-Hori
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 4:1443-1446
By bioassay-guided fractionations, quercetin was isolated as the principal tyrosinase inhibitor from the dried flowers of Heterotheca inuloides Cass (Compositae). This flavonol inhibited the oxidation of L-3,4-dihydroxyphenylalanine (L-DOPA) by mushr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e16ab6531dcd7ad0009af68be1776bb1
https://doi.org/10.1016/s0960-894x(01)80510-2
https://doi.org/10.1016/s0960-894x(01)80510-2
Autor:
Swapan K. Chaudhuri, Isao Kubo
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 4:1131-1134
Structure of a benzoquinone, maesaquinone, isolated from Maesa lanceolata (Myrsinaceae), has been characterized as 2,5-dihydroxy-3-(Z)-10′-pentadecenyl-6-methyl-1,4-benzoquinone (1) by means of spectroscopic method. It has been found to exhibit in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba1ed87a4833bc1c7e162e087bb49eba
https://doi.org/10.1016/s0960-894x(01)80242-0
https://doi.org/10.1016/s0960-894x(01)80242-0