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PROOF OF THE STRUCTURE AND STEREOCHEMISTRY OF α-AMYRIN BY SYNTHESIS FROM A β-AMYRIN DERIVATIVE, GLYCYRRHETIC ACID

✍ Scribed by Corey, E. J.; Cantrall, E. W.

Book ID
126230410
Publisher
American Chemical Society
Year
1958
Tongue
English
Weight
260 KB
Volume
80
Category
Article
ISSN
0002-7863

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Total synthesis of the β-amyrin derivati
Total synthesis of the β-amyrin derivatives olean-13(18)-ene and 18α-olean-12-ene
✍ E. Ghera; F. Sondheimer 📂 Article 📅 1964 🏛 Elsevier Science 🌐 French ⚖ 177 KB

We report the total synthesis of the racemlc /l -amyrin derivatives olean-13(18)-ene (XII) and l&r-olesn-12-ene (XIII) by a direct route, not involving relays. Trevious syntheses of fl -amyrin derivatives using natural materials as relays have been described4. Condensation of the Grignard derivativ