A new sesquiterpene glycoside, ainsliaside A (II) was isolated from Ainsliaea acerifolia SCH. BIP., together with glucozaluzanin C (I). Another new sesquiterpene glycoside, ainsliaside B (III) was isolated from A. dissecta FRANCH. et SAV. The structures of II and III were determined on the basis of chemical and spectral data.
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Miyase et al. (1984) studied this question.