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A novel steroid, 3β,6α,15α,24<-tetrahydroxy-5α-cholestane from asterosaponins

✍ Scribed by Yuji Kamiya; Susumu Ikegami; Saburo Tamura


Publisher
Elsevier Science
Year
1974
Tongue
French
Weight
184 KB
Volume
15
Category
Article
ISSN
0040-4039

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✦ Synopsis


Asterosaponins A and B were first isolated from the Japanese starfish, Asterias amurensis, by Yasumoto et al.' --who recognized that the both saponins contain the same aglycones being attached with four or five molecules of sugars and a molecule of sulfuric acid. 2-5 Subsequently, we isolated the


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ChemInform Abstract: Synthesis of (25R)-
✍ I. IZZO; F. DE RICCARDIS; G. SODANO 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 39 KB 👁 1 views

Synthesis of (25R)-5α- 6β,15α,16β, a Cytostatic Starfish Steroid. -The title steroid (VII) is synthesized from diosgenin (I). The key step is the oxidation of the enolsilane (IV) with dimethyldioxirane to introduce the 15α-hydroxy group. -(IZZO, I.; DE