Abstract

Die Untersuchung von 16 Helichrysum-Arten ergibt, daß hier das Chlorenolatherpolyin 2 charakteristisch ist. H. bracteatum (Vent.) Willd. enthalt ein Azulen, dessen Struktur 7 durch die spektroskopischen Daten des Naturstoffs und die des durch Reduktion erhaltenen Alkohols geklärt werden. Naturally Occuring Terpene Derivatives, XXII. On a New Azulene from Helichrysum bracteaturn (Vent.) Willd. The investigation of 16 Helichrysum species shows that here the chloroenolether polyine 2 is characteristic. H. bracteatum (Vent.) Willd. contains an azulene, its structure 7 has been elucidated by spectroscopic data of the natural product and those of the alcohol obtained by reduction.

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