Synthesis of pyridooxazinyl-indoles
US5519131A · kind A · utility
3Cited by
1References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1993 |
| Grant date | May 21, 1996 |
| Priority date | — |
| Expiry date | Oct 20, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P25/28
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
This application relates to a process for the preparation of indolylpyridooxazines of the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are as defined in the specification which comprises cyclizing compound of the formula ##STR2## in the presence of a strong base such as sodium hydride or potassium t-butoxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.