Process for preparing amlodipine benzenesulphonate
US6596874B1 · kind B1 · utility
2Cited by
0References
10Claims
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Assignee
Inventors
Key dates
| Filing date | Dec 20, 2001 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Dec 20, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P43/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a novel process of amalodipine benzenesulphonate of formula (I) by reacting a new 2-[/2-carboxy-benzoyl)-aminoethoxy/methyl/]-4-(2-chlorophenyl)-3-ethoxycarbonyl-5-methoxycarbonyl-6-methyl-1,4-di-hydropyridine derivative of general formula (II) wherein X represents hydrogen or alkali metal or alkali earth metal or quaternary ammonium—with benzenesulphonic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.