Starfish saponins III. A novel steroidal sapogenin, 17β-methyl-3β,6α-dihydroxy-18-nor-5α-cholesta-9(11), 13-dien-23-one, from the starfish Astropecten aurantiacus
✍ Scribed by F De Simone; A Dini; L Minale; C Pizza; R Riccio
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- French
- Weight
- 230 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
In continuation of our work' on starfish saponins, we report the isolation of the hitherto unknown 17~-methyl-3S,6cc-dihydroxy-18-no~5~-cholesta-9(ll)-l3-dien-23-one (I) from the sapoge nin portion of Astropecten aurantiacus, and show that it is an artefact produced during acid hydrolysis. Compound 1 appears to be identical with the partially characterized calcarigenin, produced by acid hydrolysis of the calcarsaponin isolated from Patir-ida cabar2. Mass and i.r spectra of calcarigenin diacetate, reported by the authors in graphic form2, were superimposable with the corresponding spectra of 23.