Bronchospasmolytic carbamate derivatives
US4419364A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1981 |
| Grant date | Dec 6, 1983 |
| Priority date | — |
| Expiry date | Jul 1, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P15/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
New bronchospasmolytically active compounds exhibiting long duration of action and reduced undesired side effects of the structural formula ##STR1## and therapeutically acceptable salts thereof, in which formula R is selected from the group consisting of --C(CH.sub.3).sub.3, ##STR2## R.sup.1 is selected from the group consisting of H and R.sup.2, R.sup.2 represents the radical of the formula ##STR3## wherein R.sup.3 is selected from the group consisting of (a) H PA1 (b) alkyl groups containing 1-3 carbon atoms ##STR4## wherein R.sup.5 is selected from the group consisting of (e) OH PA1 (b) alkoxy groups containing 1-3 carbon atoms and wherein R.sup.4 is selected from the group consisting of PA1 (a) H PA1 (b) alkyl groups containing 1-3 carbon atoms, with the proviso that R.sup.3 and R.sup.4 are combined as follows: ______________________________________ when R.sup.3 is then is R.sup.4 ______________________________________ H H alkyl group of 1-3 carbon atoms H or an alkyl group of 1-3 carbon atoms ##STR5## H ______________________________________ PA1 processes for the preparation thereof, chemical intermediates at their preparation, pharmaceutical preparations containing them, and …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.