Process for preparing 1-(mercaptomethyl)cyclopropaneacetic acid, a useful intermediate in the preparation of montelukast and salts thereof
US7572930B2 · kind B2 · utility
1Cited by
2References
3Claims
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Key dates
| Filing date | Feb 1, 2007 |
| Grant date | Aug 11, 2009 |
| Priority date | — |
| Expiry date | Mar 6, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a novel montelukast intermediate and a simple and straightforward process for preparing it.According to the present invention, by using this intermediate and the process, essentially as described herein, montelukast acid and salts thereof are obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.