Analgesic drug containing a derivative of benzylpiperazine
US4382935A · kind A · utility
1Cited by
5References
2Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 29, 1981 |
| Grant date | May 10, 1983 |
| Priority date | — |
| Expiry date | Jan 29, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/495
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The drug contains an active substance consisting of 1-(3'-benzofuryl)-4-benzylpiperazine. In order to prepare the compound, a reaction is carried out with reflux between 3-coumaranone and N-benzylpiperazine in the presence of acetic acid and in an aromatic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.