Process for the preparation of DIACEREIN
US8324411B2 · kind B2 · utility
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1References
16Claims
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Assignee
Inventors
Key dates
| Filing date | Dec 19, 2008 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Mar 28, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2603/24
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a new process for the preparation of high purity diacerein, by oxidization of the protected aloe-emodin in the presence of an oxidizing system and radical catalyst and subsequent substitution of the protector groups with acetyl groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.