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Two new asterosaponins from the starfish Asterias rubens : application of a cryogenic NMR probe head
Author(s) -
Sandvoss M.,
Preiss A.,
Levsen K.,
Weisemann R.,
Spraul M.
Publication year - 2003
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1277
Subject(s) - starfish , asterias , chemistry , head (geology) , analytical chemistry (journal) , chromatography , geology , paleontology
We report two new asterosaponins from the Baltic starfish Asterias rubens along with their 1 H and 13 C NMR data. The compounds were isolated after on‐flow liquid chromatography–NMR–mass spectrometry screening indicated that they had not been identified before. The one‐ and two‐dimensional NMR experiments used to elucidate the structures were recorded using a 5 mm cryogenic probe head. The advantages of cryogenic probes for this kind of examination in comparison with conventional probe heads are discussed. Copyright © 2003 John Wiley & Sons, Ltd.