Process for the preparation of quaternary N-alkyl morphinan alkaloid salts
US9415044B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Dec 12, 2014 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Dec 12, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An improved process for the N-alkylation of tertiary morphinan alkaloid bases to form the corresponding quaternary morphinan alkaloid derivatives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.