Process for the preparation of chemical compounds
US6469172B2 · kind B2 · utility
2Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2001 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Mar 5, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An improved and efficient synthesis for the preparation of 2-amino-6-[(4-aminopiperidin-1-yl]methyl]pyridine, an intermediate compound in the preparation of muscarinic M3 receptor antagonists, includes as a final step the removal of trimethylacetyl and an amino protecting group from 2-trimethylacetyl-amino-6-[(4-protected aminopiperidin-1-yl)methyl]pyridine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.