Abstract
Three steroidal saponins, including one new and two known compounds, were isolated from the rhizomes of Paris polyphylla Smith. One- and two-dimensional NMR, LC-MS, and interpretation of hydrolytic cleavage experiments led to the identification of the structure of the new saponin as (25R )-spirost-5-ene-3β ,17α -diol (pennogenin) 3-O -{O -α -L -rhamnopyranosyl-(1→2)-O -[O -β -xylopyranosyl-(1→5)-α -L -arabinofuranosyl-(1→4)]-β -D -glucopyranoside}. The isolated saponins were evaluated for their antifungal activity against Cladosporium cladosporioides and Candida species and showed comparable activity to chemicals used in some commercial products.
Key words
saponins - pennogenin - Liliaceae -
Paris polyphylla
- antifungal activity
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Dr. Dawei Deng
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