Optically active methylhydroxylaminopropanol compound and its use as intermediate for preparation of (S)-(−)-3-methylamino-1-(2-thienyl)propan-1-ol
US8168805B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | May 15, 2008 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | Jul 31, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D333/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides an (S)-methylhydroxylaminopropanol derivative and the (S)-methylhydroxylaminopropanol derivative of the present invention is used as an intermediate for preparation of (S)-(−)-3-methylamino-1-(2-thienyl)propan-1-ol, which is an intermediate for preparation of (S)-(+)-N-methyl-3-methyl-3-(1-naphthyloxy)-3-(2-thienyl)propylamine oxalate. The present invention also provides a process for preparing (S)-(−)-3-methylamino-1-(2-thienyl)propan-1-ol with higher yield and lower cost, wherein the (S)-methylhydroxylaminopropanol derivative is used as an intermediate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.