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A new sesquiterpene lactone, 3β-O-β-d-glucopyranosyl-8α-hydroxy-11α,13-dihydrozaluzanin C (1), and a novel trinorguaiane-type sesquiterpene, 4β,10α-dimethyl-1β,5α-bicycle[3,5,0]dec-6-en-4α,10β-diol (2), together with three known compounds, glucozaluzanin C (3), 11α,13-dihydrozaluzanin C (4), and 8α-hydroxy-11α,13-dihydrozaluzanin C (5), were isolated from the whole plant of Ainsliaea fragrans Champ. The structures of 1 and 2 were elucidated on the basis of detailed spectral analysis. Structures of the known compounds were identified by comparison of its spectral data with those values in the literature. [ABSTRACT FROM AUTHOR]

Two new triterpenoid saponins, named ilexsaponins B4 (1) and C (2), have been isolated from the roots of Ilex pubescens. Their structures have been established as ilexgenin B 3-O-α-l-arabinopyranosyl-(2 → 1)-β-d-glucopyranosyl-(2 → 1)-β-d-xylopyranoside (1) and 3-O-β-d-xylopyranosyl spathodic acid 28-β-d-glucopyranosyl ester (2) by means of spectral and chemical methods. [ABSTRACT FROM AUTHOR]