Process
US7199248B2 · kind B2 · utility
2Cited by
0References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2003 |
| Grant date | Apr 3, 2007 |
| Priority date | — |
| Expiry date | Jan 12, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D261/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for preparing a pharmaceutical starting compound compound by hydrolyzing a compound of the general formula (II): Wherein R1 is protected carboxy, R2 is lower alkoxy or higher alkoxy, A1 is an aromatic bivalent group, heterocyclic bivalent group or cyclo (lower) alkane bivalent group, and A2 is an aromatic bivalent group, heterocyclic bivalent group or cyclo (lower) alkane bivalent group, with aqueous potassium hydroxide and by treating with hydrochloric acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.