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2003
Journal Article
Titel
Two new asterosaponins from the starfish Asterias rubens: Application of a cryogenic NMR probe head
Abstract
We report two new asterosaponins from the Baltic starfish Asterias rubens along with their 1H and 13C 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.