A single pot synthesis of 3,4-seco acid from 4,4-dimethyl-3-keto triterpenoid
โ Scribed by Bhim P. Pradhan; Satyajit Chakraborty; Peter Weyerstahl
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- French
- Weight
- 216 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
โฆ Synopsis
Oxidation of 4,4-dimethyl-Fkete triterpenoid with m-CPBA in presence of p-TsOH furnishes 3,4-aeco triterpenoid acid whereas 4-mono-methyl-3-keto-triterpenoid affords only the e-lactone under the identical condition.
๐ SIMILAR VOLUMES
THE ground state oouformations of the steroid ring systems are in general securely looked in potential wells, can vary but little, and are for the most part well understood. In a 4,4-dimethyl-3-keto-5gC-steroid (I) however, there is reason to question whether or not ring A will be in the standard ch
## respect- ively, on the basis of chemical, spectral and X-ray analytical evidence. ## Euphorbia supina Rafin., which is documented as a folk medicine,' contained biogenetical- ly interesting triterpene components 2-6 involving spirosupinanonedio13 and neospirosupinanone-