Chemical process
US5326869A · kind A · utility
2Cited by
0References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 20, 1992 |
| Grant date | Jul 5, 1994 |
| Priority date | — |
| Expiry date | Nov 20, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P25/06
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A process for the preparation of a 5,7-diaryloxy-2-(2-heteroaryl)-triazolo[1,5-a][1,3,5]triazine, which comprises reacting a N-2-(4,6-diaryloxy)-[1,3,5]triazinyl-N'-(2-heteroarylcarbonyl)hydrazine with a polyphosphoric acid silyl ester. The invention also provides a multistep process for preparing certain triazolotriazines having activity asadenosine antagonists.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.