Process for the preparation of substituted thiopyran-1-oxides
US5688954A · kind A · utility
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11Claims
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Key dates
| Filing date | Apr 24, 1996 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | Apr 24, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D213/32
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is described for the preparation of a compound of formula (IX) from 4-hydroxybutyl 3-pyridyl ketone. The compound of formula (IX) is an intermediate useful in the preparation of (1R,2R)-2-(3-pyridyl)-N-alkyl-tetrahydro-2H-thiopyran-2-carbothioamide 1-oxides which possess useful pharmaceutical properties, for example anti-hypertensive properties. ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.