Zobrazeno 1 - 10
of 138
pro vyhledávání: '"CHARLES D. HUFFORD"'
Autor:
Wilmer H. Perera, Ion Ghiviriga, Douglas L. Rodenburg, Kamilla Alves, Frank T. Wiggers, Charles D. Hufford, Frank R. Fronczek, Mohamed A. Ibrahim, Ilias Muhammad, Bharathi Avula, Ikhlas A. Khan, James D. McChesney
Publikováno v:
Molecules, Vol 23, Iss 12, p 3328 (2018)
Stevia rebaudiana and its diterpene glycosides are one of the main focuses of food companies interested in developing novel zero calorie sugar substitutes since the recognition of steviol glycosides as Generally Recognized as Safe (GRAS) by the Unite
Externí odkaz:
https://doaj.org/article/471b30a998c54890bc06ff3bb93eae20
Autor:
James D. McChesney, Bharathi Avula, Wilmer H. Perera, Charles D. Hufford, Frank R. Fronczek, Ikhlas A. Khan, Maite L. Docampo, Frank T. Wiggers
Publikováno v:
Phytochemistry Letters. 25:163-170
The hydrolysis reaction of rebaudioside A and stevioside was studied under mild and strong acidic conditions at different temperatures and times. Exposure of rebaudioside A to vigorous acid conditions yielded three different aglycone cores which were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6068e4690973053c6013b3316b6ebb22
https://doi.org/10.1016/j.phytol.2018.04.007
https://doi.org/10.1016/j.phytol.2018.04.007
Publikováno v:
Magnetic Resonance in Chemistry. 37:856-859
HMBC spectroscopy optimized for small couplings was employed to determine the four-bond and two-bond proton carbon correlations on the aromatic rings of ellagic acid derivatives. Complete 13C NMR assignments of 3′-O-methyl-3,4-methylenedioxyellagic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2be01368ad91c816c074d70efade709
https://doi.org/10.1002/(sici)1097-458x(199911)37:11<856::aid-mrc529>3.0.co
https://doi.org/10.1002/(sici)1097-458x(199911)37:11<856::aid-mrc529>3.0.co
Publikováno v:
Journal of Natural Products. 62:988-992
Microbial transformation studies of the antifungal alkaloid sampangine (2) have revealed that it is metabolized by a number of microorganisms. Using a standard two-stage fermentation technique, Beauvaria bassiana (ATCC 7159), Doratomyces microsporus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::164917902067c08b45b60f731bd035c3
https://doi.org/10.1021/np980457a
https://doi.org/10.1021/np980457a
Autor:
Ilias Muhammad, Jaber S. Mossa, Ahmed F. Ramadan, Humayun H. Mirza, Charles D. Hufford, Farouk S. El-Feraly
Publikováno v:
Phytochemistry. 50:1063-1068
Five new alkylated benzoquinones were isolated as methyl ether derivatives from a complex mixture containing alkylated hydroxy benzoquinones, obtained from the fruits of Maesa lanceolata . The structures of the benzoquinones, named, 2-acetoxy-5-metho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::062e06dc8653133ff310cb40ce87b927
https://doi.org/10.1016/s0031-9422(98)00626-8
https://doi.org/10.1016/s0031-9422(98)00626-8
Autor:
David L. Lentz, Claus M. Passreiter, Barbara Meurer-Grimes, Javier Cordero, Omar Ibrahimi, Alice M. Clark, Charles D. Hufford, Adewole L. Okunade
Publikováno v:
Journal of Ethnopharmacology. 63:253-263
Ninety-two plants used in the traditional pharmacopoeia of the Pech and neighboring Mestizo peoples of central Honduras are reported. The results of in vitro antimicrobial screens showed that 19 of the extracts from medicinal plants revealed signs of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::313598518136407282e90f82400e4d3d
https://doi.org/10.1016/s0378-8741(98)00100-7
https://doi.org/10.1016/s0378-8741(98)00100-7
Publikováno v:
Phytochemistry. 47:1331-1336
The aerial parts of Hypoestes forskalei yielded three new fusicoccane diterpene ketones, named deoxyhypoestenone, dehydrohypoestenone and hypoestene. The structure and relative stereochemistry of the diterpenes were based on 1 H and 13 C NMR data, ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ae86d2d1857325cb57f225c52231546
https://doi.org/10.1016/s0031-9422(97)00709-7
https://doi.org/10.1016/s0031-9422(97)00709-7
Publikováno v:
Journal of Heterocyclic Chemistry. 34:1233-1237
Studies on methoxylation in the 7H-naphtho[1,2,3-i,j][2,7]naphthyridin-7-one (sampangine) system represented by 3-bromo- and 4-bromosampangine as well as sampangine itself are described. We have found that regioselectivity of nucleophilic substitutio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3593dca1a56498326f89c53c823cc9e9
https://doi.org/10.1002/jhet.5570340422
https://doi.org/10.1002/jhet.5570340422
Publikováno v:
Planta Medica. 79
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1770386f7985d6b2a41c408ede19b35
https://doi.org/10.1055/s-0033-1336530
https://doi.org/10.1055/s-0033-1336530
Publikováno v:
Journal of Chemical Crystallography. 25:223-226
3-Methylsampangine, C16H10N2O, crystallizes in the monoclinic space group P21/c witha=7.260(3),b=10.697(5),c=15.342(6) A, and β=102.69(4). All nonhydrogen atoms of this potent antifungal agent are planar to within 0.082 A. The title compound exhibit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4aa96ca875764b92912992a8a5f9d4f0
https://doi.org/10.1007/bf01665173
https://doi.org/10.1007/bf01665173