Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Felix J. Parodi"'
Publikováno v:
Spectroscopy Letters. 29:423-435
A reinvestigation of the boron trifluoride-mediated transformations of the guaianolide-1(10)-β-epoxide [1] provided the previously obtained cis-eudesmanolide [5] and the fluoroguaianolide [2] as well as two new lactones, the trans-guaianolide [4] an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1dc01a13ce911c1a91d54650f4f48b23
https://doi.org/10.1080/00387019608006661
https://doi.org/10.1080/00387019608006661
Autor:
David Vargas, Martin A. Hjortso, Lu Tiansheng, Leovigildo Quijano, Nikolaus H. Fischer, Eric R. Mertooetomo, Felix J. Parodi
Publikováno v:
Phytochemistry. 33:113-116
The roots of giant ragweed ( Ambrosia trifida ) afforded β-farnesene, β-bisabolene and squalene. In addition, thiarubrine B and its related thiop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0bdea50b341b625d8555b3181738242
https://doi.org/10.1016/0031-9422(93)85405-g
https://doi.org/10.1016/0031-9422(93)85405-g
Autor:
Martin A. Hjortso, David Vargas, Nikolaus H. Fischer, Hector E. Flores, Felix J. Parodi, Leovigildo Quijano, Marco L. Gomez-Barrios
Publikováno v:
Phytochemistry. 31:2703-2707
The 13C NMR spectra of thiarubrine A and B have been completely assigned. In a biosynthetic study using hairy root cultures of Ambrosia artemisiifolia, the 13C NMR spectra of thiarubrine A labelled by incorporation of [1-13C]-, [2-13C]- and [1,2-13C2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92ca5ed8aa48e8e833a17e45d69507ca
https://doi.org/10.1016/0031-9422(92)83615-6
https://doi.org/10.1016/0031-9422(92)83615-6
Publikováno v:
Journal of Natural Products. 52:554-566
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9053e1db31816548091a79a73c02fb0f
https://doi.org/10.1021/np50063a014
https://doi.org/10.1021/np50063a014
Publikováno v:
Spectroscopy Letters. 20:97-103
The relative configuration and solute conformation of desacylguayulin A was established using modern NMR techniques. Application of COSY, NOESY, CONOESY, homo- and heteronuclear J-resolved, DEPT and NOEDIFF allowed assignments of all 1H and 13C NMR r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80460a95fee3f081c1735972b26a31a7
https://doi.org/10.1080/00387018708081531
https://doi.org/10.1080/00387018708081531
Publikováno v:
Phytochemistry. 25:877-881
Chemical analysis of Calea jamaicensis , the type species for the genus Calea , yielded in addition to a chromene and two flavonoids, four new sesquiterpene lactones, jamaicolides A-D, which include two guaianolides, a heliangolide, and a 12,8α-germ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f86e2cc603f1b06e39760af5ca2e6aa9
https://doi.org/10.1016/0031-9422(86)80020-6
https://doi.org/10.1016/0031-9422(86)80020-6
Publikováno v:
Spectroscopy Letters. 20:445-450
The complete 13C NMR resonances for the sesquiterpene lactone 11,13-dihydroparthenolide were established by the application of 2D-INADEQUATE.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a1f9f58e6d43db12a55a75f94a74351
https://doi.org/10.1080/00387018708081565
https://doi.org/10.1080/00387018708081565
Autor:
Nikolaus H. Fischer, Felix J. Parodi
Publikováno v:
Spectroscopy Letters. 21:69-75
Complete 13C NMR resonance assignments of a guaianolide 1(10)-epoxide were performed by the use of 2D Heteronuclear Relayed NMR Spectroscopy. This technique allowed detection of connectivities between carbons and directly attached protons and concomi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e731c17aea139544680183e1d6ab183c
https://doi.org/10.1080/00387018808082295
https://doi.org/10.1080/00387018808082295
Autor:
Nikolaus H. Fischer, Felix J. Parodi
Publikováno v:
Phytochemistry. 27:2987-2988
Chemical analysis of Baccharis salicina afforded two new guaianolides, bacchariolides A and B, and the known flavone centaureidin. Their structures were elucidated by spectroscopic methods.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d782d4a8000a75eef4b84273a83ca797
https://doi.org/10.1016/0031-9422(88)80705-2
https://doi.org/10.1016/0031-9422(88)80705-2
Publikováno v:
Journal of Natural Products. 51:594-595
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b12eb5a26c91bde16a1407e4f71f9cc3
https://doi.org/10.1021/np50057a028
https://doi.org/10.1021/np50057a028