Ravikumar PR, Hammesfahr P, Sih CJ. Cytotoxic saponins from the Chinese herbal drug Yunnan Bai Yao.
J Pharm Sci 1979;
68:900-3. [PMID:
458613 DOI:
10.1002/jps.2600680731]
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Abstract
Two cytotoxic saponins were isolated from the acetone extracts of the herbal preparation "Yunnan Bai Yao" by column chromatography. They were identified as a 3-([alpha-L-rhamnopyranosyl()Rha leads to 2Glu)]-[alpha-L-arabinofuranosyl(1Ara leads to 4Glu)]-beta-D-glucopyranosyl)-25(R)-spirost-5-en-3beta-ol (I) and 3-([alpha-L-rhamnopyranosyl(1Rha leads to 4Rha)-alpha-L-rhamnopyranosyl(1Rha leads to 4Glu)]-[alpha-L-rhamnopyranosyl(1Rha leads to 2Glu)]-beta-D-glucopyranosyl)-25(R)-spirost-5-en-3 beta-ol (VI). Both saponins exhibited significant cytotoxicity in the standard P-388, L-1210, and 9KB tissue culture screens.
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