Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Karl Hiller"'
Autor:
Annick Plock, Manfred Nimtz, Karl Hiller, Eberhard Krause, Gabriele Beyer, Egon Gründemann, Victor Wray
Publikováno v:
Phytochemistry. 57:489-496
An approach, using well characterized procedures, is presented that should be of general applicability for the structural elucidation of complex sugar moieties of natural products. The methods used are exemplified by the structure elucidation of a ne
Publikováno v:
Phytochemistry. 45:125-132
Seven triterpenoid saponins were isolated from both the aerial and the underground parts of Aster bellidiastrum. Five of the compounds were common to both parts. The structures were elucidated mainly from their NMR and mass spectral data, and showed
Publikováno v:
Phytochemistry. 30:627-631
Two novel acylated triterpenoid saponins were isolated from Bellis perennis . The structures of these have been elucidated as 3- O -α- l -rhamnopyranosyl- and 3- O -β- d -glucopyranosyl-2β,3β,16α,23-tetrahydroxyolean-12-en-28-oic acid-28- O -α-
Autor:
Ernst Haslinger, Karl Hiller, Johann Jurenitsch, Michaela Plasun, Gottfried Reznicek, Wolfgang Kubelka, Siegfried Korhammer
Publikováno v:
Phytochemistry. 30:1629-1633
Four new bisdesmosidic saponins each containing eight carbohydrate units were isolated from Solidago canadensis. GC, GC-MS, FABMS analysis and mainly the use of 2D NMR techniques allowed their identification as bayogeninglycosides (canadensissaponins
Publikováno v:
Phytochemistry. 49(1)
The cytotoxic compound, virgaureasaponin 1, was converted using several optimized enzymecatalysed hydrolyses to the 28-O-beta-D-xylopyranosyl (1--4)-alpha-L-rhamnopyranosyl-(1--2)-beta-D-fucopyranoside (2), and the 28-O-alpha-L-rhamnopyranosyl-(1--3)
Publikováno v:
Phytochemistry. 41(5)
A new deacylsaponin of polygalacic acid, desacylbellidioside B 4 , was obtained from the whole plants of Bellium bellidioides L. The structure has been elucidated by a general strategy involving mass spectrometry (ESI-MS, including tandem MS, and GC-
Publikováno v:
Phytochemistry. 40(5)
Four major triterpenoid saponins were isolated from the aerial parts of Aster bellidiastrum . The structures were elucidated from their NMR and mass spectral data, and from derivatization. One is a new compound with the structure 3-O-β- d -glucopyra
Publikováno v:
Phytochemistry. 36(2)
A new acylated triterpenoid saponin carrying the rare 2,3-branched glucose at C-28 of the aglycone bayogenin (2 beta, 3 beta, 23-trihydroxyolean-12-en-28-oic acid) was isolated from the whole plants of Bellium bellidioides. The structure was elucidat
Publikováno v:
Phytochemistry. 31(7)
Four novel triterpenoid saponins were isolated from the underground parts of Bellis perennis. The structures were elucidated as 3-O-beta-D-glucopyranosides of 2 beta,3 beta,16 alpha-trihydroxyolean-12-ene-28-oic acid-28-alpha-L- rhamnopyranosyl(1----
Publikováno v:
Phytochemistry. 31(2)
A new 3,28-bisdesmosidic triterpenoid glycoside was isolated from the mixture of deacylated saponins from the aerial parts of Solidago virgaurea. The structure of virgaureasaponin 3 was determined as 3-O-beta-D-glucopyranosyl-(1----3)-beta-D-glucopyr