Processes for the preparation of normorphinan salts
US8101757B2 · kind B2 · utility
2Cited by
3References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2008 |
| Grant date | Jan 24, 2012 |
| Priority date | — |
| Expiry date | Jul 26, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention provides a process for the conversion of opioid derivatives into normorphinan compounds useful for making “nal” compound analgesics and antagonists. In particular, the process may be used for the production of pure normorphinan salts from crude opioid substrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.