Desmethoxy-encecalin und Thymolderivate ausArnica sachalinensis1

Abstract
From the flowers of Arnica sachalinensis the chromene desmethoxyencecalin, 10-acetoxy-8,9-epoxy-3-O-isobutyrylthymol, and 10-acetoxy-8-hydroxy-9-isobutyryloxythymol were isolated and their structures established by mass spectrometry 13C-, and 1H-NMR spectroscopy.