Process for producing simvastatin and/or its derivatives
US6271398A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2000 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Jun 19, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2602/28
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the production of simvastatin and its analogues that is efficient, economical and convenient involves the use of hydroxyl protected intermediates of formula (III) or (VII). These intermediates allow for direct alkylation of the butyrate side chain followed by deprotection and reformation of the lactone ring. ##STR1## R.sup.1 is hydrogen or methyl; R.sup.2 represents a straight or branched chain alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 3 to 7 carbon atoms, or an aralkyl group having 1 to 6 carbon atoms in the alkyl chain; R.sup.3 and R.sup.4 each independently represent an alkyl group, an ether group, a thioether group, an aryl group, an aralkyl group, an alkenyl group, a cyclic ether group, or a cyclic thioether group; and R.sup.5 and R.sup.6 each independently represent hydrogen, an alkyl group, an aryl group, an aralkyl group, an alkoxy group, or an ether group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.