Pyrazine compounds
US6503909B1 · kind B1 · utility
0Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2001 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Feb 8, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P27/16
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A compound of formula (I) wherein R1 is phenyl substituted by one or more halogen atoms; R2 is —NH2; R3 is —NH2 or hydrogen; R4 is —CXNRaRb, —CXNH—(CH2)y—NRaRb; wherein X is ═O or +S; y is an integer zero, 1 or 2; Ra and Rb, which may be the same or different, are selected from hydrogen and C1-4 alkyl or together with the nitrogen atom to which they are attached form a saturated 5- or 6-membered heterocycle containing one or two nitrogen heteroatoms, which heterocycle can be further substituted with one or more C1-4 alkyl groups; and pharmaceutically acceptable derivatives thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.