Process for preparing (1R,2S,4R)-(-)-2-[(2'-{N,N-dimethylamino}-ethoxy)]-2-[phenyl]-1,7,7-tri-[m ethyl]-bicyclo[2.2.1]heptane and pharmaceutically acceptable acid addition salts thereof
US6242386A · kind A · utility
3Cited by
1References
11Claims
0Family size
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Key dates
| Filing date | May 10, 2000 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | May 10, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2602/42
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A process for preparing (1R,2S,4R)-(-)-2-[(2'-[N,N-dimethylamino}-ethoxy)]-2-[phenyl]-1,7,7-tri-[m ethyl]-bicyclo [2.2.1]heptane and pharmaceutically acceptable acid addition salts thereof with higher yields and higher grades of purity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.