Absolute configuration of the iboga and voacanga alkaloids : chiroptical approach
✍ Scribed by K. Bláha; Z. Koblicová; J. Trojánek
- Publisher
- Elsevier Science
- Year
- 1972
- Tongue
- French
- Weight
- 177 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0040-4039
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## Abstract Hydroxyiridals − monocyclic triterpenoids − are found abundantly in sword lilies. They feature a homofarnesyl side chain that is hydroxylated at one of the allylic methylene groups, which gives rise to a chiral carbon atom. The absolute configuration of six hydroxyiridals from different
The alkaloid cathanneine has recently3 been isolated from the leaves of Cathamnthus lanceus 64. ex A. DC.) Pith. and structure I (without stereochemistry) was subsequently postulated for it on the basis of spectral analysis. We have now verified this structure and confirmed the absolute configuratio