Imidazopyridine derivatives and process for making them
US6281360A · kind A · utility
3Cited by
2References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2000 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Feb 25, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P25/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Imidazopyridine compounds of the formula 1 are can be made in high purity, e.g. greater than 95% pure, by a process that use a novel intermediate of formula 5: ##STR1## wherein R.sup.1 and R.sup.2 each independently represent hydrogen or a lower alkyl group and Y and Z each independently represent a lower alkyl group. By this process, zolpidem, a commercial pharmaceutical of the formula 1 can be effectively made.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.