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Sesquiterpenlactone aus Arnica chamissonis |
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| Authors: | Willuhn Günter Kresken Joachim Wendisch Detlef |
| Institution: | Institut für Pharmazeutische Biologie der Universit?t Düsseldorf. |
| Abstract: | From the flowers of ARNICA CHAMISSONIS L ESS, sub-sp. FOLIOSA (N UTT.) M AGUIRE and its variety INCANA (G RAY) H ULTEN two new naturally occuring pseudoguaianolides were isolated and their structures established by spectroscopic methods. They are shown to be 4-O-acetyl-6-desoxychamissonolide ( 3) and the propionylic ester of 11,13-dihydrohelenalin which was named arnicolide G ( 6). |
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