Three new hydroperoxysterols, 24-hydroperoxy-4α,14α-dimethylcholesta-8,25-dien-3β-ol, 25-hydroperoxy-4α,14α-dimethylcholesta-8,23-dien-3β-ol and 25-hydroperoxycycloart-23-en-3β-ol, have been isolated from the aerial parts of Xanthosoma robustum, besides 24-hydroperoxycycloart-25-en-3β-ol, 4α, 14α-dimethylcholesta-8,24-dien-3β-ol and cycloartenol. Additionally, the two new diols, 4α,14α-dimethylcholesta-8,25-dien-3β,24-diol and 4α,14α-dimethylcholesta-8,23-dien-3β,25-diol were obtained from the first two hydroperoxysterols, respectively, by reduction with triphenylphosphine. The structures have been defined by chemical and spectroscopic studies. The four hydroperoxysterols exhibited antibacterial acitivities against Escherichia coli, Bacillus subtilis and Micrococcus luteus.
Journal article
Antibacterial hydroperoxysterols from Xanthosoma Robustum
Phytochemistry, Vol.41(4), pp.1191-1195
1996
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Abstract
Details
- Title
- Antibacterial hydroperoxysterols from Xanthosoma Robustum
- Creators
- T Kato - Swiss Federal Institute of Technology, ZurichB Frei - Swiss Federal Institute of Technology, ZurichM HeinrichO Sticher - Swiss Federal Institute of Technology, Zurich
- Publication Details
- Phytochemistry, Vol.41(4), pp.1191-1195
- Identifiers
- 1573; 991012820756802368
- Academic Unit
- Southern Cross Plant Science
- Resource Type
- Journal article