Chemical and Genetic Differentiation ofLigularia tsangchanensis in Yunnan and Sichuan Provinces of China

The intraspecific diversity in L. tsangchanensis collected in the Chinese Provinces Yunnan and southwestern Sichuan was studied by chemical and genetic approaches. The samples collected in Yunnan were found to contain cacalol ( 1 ) as the sole major component, while samples from Sichuan contained 7 α ‐ and 7 β ‐eremophila‐9,11‐dien‐8‐one ( 5 and 6 ) as well as the 3 α ‐angeloyloxy derivative 7 as major components. In addition, the sequences of...