✦ LIBER ✦
Zur Kenntnis der Triterpene. 193. Mitteilung. Synthese von (±)-trans-4,4,7,9-Tetramethyl-3β-hydroxy-decalon-(8)
✍ Scribed by J. Kalvoda; H. Loeffel
- Publisher
- John Wiley and Sons
- Year
- 1957
- Tongue
- German
- Weight
- 937 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
Racemic trans‐4,4,7,9‐tetramethyl‐3 β‐hydroxy‐decalone‐(8) (Xa) has been synthesized. The corresponding optically active levorotatory compound had been previously obtained by R. Rüegg, J. Dreiding, O. Jeger and L. Ruzicka, as a degradation product of α‐amyrin. The stereoisomer racemic cis‐4,4,7,9‐tetramethyl‐3 α‐hydroxy‐decalone‐(8) (XIVa) and the two hydroxyketones (±)‐trans‐4,4,7‐trimethyl‐3 β‐hydroxy‐decalone‐(8) (XIIIa) and (±)‐cis‐4,4,7‐trimethyl‐3 β‐hydroxy‐decalone‐(8) (IXa) have also been obtained as secondary products of the synthesis.