Methods for preparation of apremilast
US11008288B1 · kind B1 · utility
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26Claims
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Key dates
| Filing date | Feb 26, 2020 |
| Grant date | May 18, 2021 |
| Priority date | — |
| Expiry date | Feb 26, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D209/48
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention discloses a method for preparation of Apremilast. β-phthalimino vinylsulfones are reacted through the asymmetric addition reaction to form an addition product, and the drug of Apremilast can be obtained from the addition product through simple reactions. The method is a process for synthesizing Apremilast in a more efficient way.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.