1,2-Diphenylethanolamine derivatives and their salts and the preparation thereof
US3988456A · kind A · utility
6Cited by
0References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1975 |
| Grant date | Oct 26, 1976 |
| Priority date | — |
| Expiry date | Mar 24, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P25/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
1,2-Diphenylethanolamine derivatives of the formula: ##SPC1## Wherein R.sub.1 and R.sub.2 are each hydrogen, a halogen, nitro, hydroxy, an alkyl or methoxy; R.sub.3 is a group of the formula: ##SPC2## Wherein R.sub.4, R.sub.5 and R.sub.6 are each hydrogen, a halogen or methoxy and n is an integer of 0 to 3, or a pyridyl; and Z is hydroxy or an acyloxy; with proviso that when R.sub.1 and/or R.sub.2 are hydroxy, Z is hydroxy, and their pharmaceutically acceptable salts, which have excellent analgesic and anti-tussive activities, and a process for the preparation thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.