Lanostane to cucurbitane transformations
Autor: | O. E. Edwards, R. J. Kolt |
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Rok vydání: | 1987 |
Předmět: | |
Zdroj: | Canadian Journal of Chemistry. 65:595-612 |
ISSN: | 1480-3291 0008-4042 |
Popis: | Transformation of 3,7,9,11-tetraoxygenated lanostane derivatives into 3,7,11-trioxygenated cucurbit-1(10)-enes and cucurbit-5(10)-enes has been achieved. Attempts to convert the latter in good yield into cucurbit-5-enes are documented. The steric and electronic factors influencing the course of dehydration, under Westphalen conditions, of 9α-hydroxylanostane derivatives are discussed. Unusual autooxidation and dehydrogenation promoted by rhodium trichloride and iron pentacarbonyl are described. |
Databáze: | OpenAIRE |
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