Previous studies by Kundu et al.  and Ouyang et al.  detected 9-oxo-agerophorone (10Hα and 10Hβ) and 9-oxo-10, 11-dehydro-agerophorone in ethyl acetate extract of E. adenophorum leaves, but this two compounds were given different names (cadinan-3-ene-2,7-dione and cadinan-3,6-diene-2,7-dione) by Kundu et al. . The oral toxicity of 9-oxo-agerophorone (10Hα and 10Hβ) and 9-oxo-10, 11-dehydro-agerophorone on mice was reported to be low . However, these compounds were effective against Rhizoctonia solani, Sclerotium rolfsii, Fusarium oxysporum and Macrophomina phaseolina, with EC50 values ranging from 89.74 μg/ml to 320 μg/ml . Moreover, the antifungal activity of sesquiterpenes on P. myriotylum had not been reported.