Process for making montelukast and intermediates therefor
US7786138B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Nov 20, 2006 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Dec 20, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A compound of the following formulawherein R′ is a straight or branched C1-C4 alkyl group is useful in processes associated with the synthesis of montelukast and its salts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.