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从豚草地上部分分得3个倍半萜内酯,鉴定为psilostachyin,psilostachyin B和psilostachyin C。药理实验表明3个化合物皆有一定的杀螺活性。
Three sesquiterpene lactones were isolated from the basal part of the guinea grass and identified as psilostachyin, psilostachyin B and psilostachyin C. Pharmacological experiments showed that all three compounds had certain molluscicidal activity.