Two novel triterpenes, yardenone (5) and abudinol(6) together with the known sodwanones A-D (1 -4) have been isolated from the marine sponge Ptilocaulis spiculifer. The structures of compounds 5 and 6 were determined by interpretation of their 1D and 2D NMR spectra and were secured, including their
Siphenellinol, a new triterpene from the marine sponge siphonochalinasiphonella
โ Scribed by Shmuel Carmely; Yosi Loya; Yoel Kashman
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- French
- Weight
- 192 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0040-4039
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Akateapin (1) , m inhibitor of phosphatidylinositol-specific phospholipase C, w~ isolated from ma acetone e~tract of the marine Slxmge, Callyspongia sp. Structural determination by 2D-NMR speclroscopy revealed that it was a novel triteq~ene with the hydmquimme disulfats.
## Several squalene-derived triterpenes possessing a hitherto unknown ring system were isolated from the Red Sea Sponge, Siphonochalinl siphonella. The structure of one of the new compounds, sipholenol (la), was determined ty spectroscopic methods including a full x-ray diffrac-