Process for the preparation of rivaroxaban involving novel intermediate
US11034683B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Dec 21, 2017 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Dec 21, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/13
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to the novel key intermediate, 4-{4-[(5S)-(Aminomethyl)-2-oxo-1,3-oxazolidin-3-yl]-phenyl}-morpholin-3-one perchlorate, in the synthesis of rivaroxaban. The invention further relates to the crystalline form of novel intermediate, the process to prepare the novel intermediate and method of preparing rivaroxaban using this novel intermediate. The invention provides an improved and efficient process for preparation of Rivaroxaban.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.