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New lupane bidesmosides exhibiting strong cytotoxic activities in vitro
A. Korda, L. Rárová, Z. Pakulski, M. Strnad, J. Oklešťková, K. Kuczynska, P. Cmoch, K. Gwardiak, R. Karczewski
Language English Country United States
Document type Journal Article, Research Support, Non-U.S. Gov't
- MeSH
- Cell Line MeSH
- HeLa Cells MeSH
- Humans MeSH
- MCF-7 Cells MeSH
- Neoplasms drug therapy MeSH
- Antineoplastic Agents chemical synthesis chemistry pharmacology MeSH
- Rhamnose analogs & derivatives chemical synthesis pharmacology MeSH
- Triterpenes chemical synthesis chemistry pharmacology MeSH
- Cell Survival drug effects MeSH
- Structure-Activity Relationship MeSH
- Check Tag
- Humans MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
Triterpene bidesmosides are considered as highly cytotoxic saponins, usually less toxic against normal cells than monodesmosides, and less haemolytic. Biological activity of the betulin-type bidesmosides, rarely found in Nature, and seldom prepared due to serious synthetic problems, is poorly recognized. We report herein a protocol for the preparation of disubstituted lupane saponins (betulin bidesmosides) by treatment of their benzoates with potassium carbonate in dichloromethane / methanol solution. Cytotoxicity of all compounds was tested in vitro for a series of cancer cell lines, as well as normal human skin BJ fibroblasts. Presence of l-rhamnose moiety is crucial for cytotoxicity of betulin bidesmosides. On the other hand, l-arabinose fragment connected to lupane C-3 carbon atom significantly decreases activity. Presented results clearly show that betulin bidesmosides have significant clinical potential as anticancer agents.
References provided by Crossref.org
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- $a Triterpene bidesmosides are considered as highly cytotoxic saponins, usually less toxic against normal cells than monodesmosides, and less haemolytic. Biological activity of the betulin-type bidesmosides, rarely found in Nature, and seldom prepared due to serious synthetic problems, is poorly recognized. We report herein a protocol for the preparation of disubstituted lupane saponins (betulin bidesmosides) by treatment of their benzoates with potassium carbonate in dichloromethane / methanol solution. Cytotoxicity of all compounds was tested in vitro for a series of cancer cell lines, as well as normal human skin BJ fibroblasts. Presence of l-rhamnose moiety is crucial for cytotoxicity of betulin bidesmosides. On the other hand, l-arabinose fragment connected to lupane C-3 carbon atom significantly decreases activity. Presented results clearly show that betulin bidesmosides have significant clinical potential as anticancer agents.
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