Die Strukturermittlung von Gelsemium-Alkaloid C (14-Hydroxygelsemicin) durch NMR- und Massenspektrometrie

摘要

The structur of a further minor alkaloid ofGelsemium sempervirens(L.) Ait., preliminary designated as Gelsemium alkaloid C, could be elucidated as 14-hydroxygelsemicin. NMR- and mass-spectrometry was most useful for this purpose, beside chemical reactions; the spectra are discussed in detail.