Indolobenzoxazines
US4318910A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1981 |
| Grant date | Mar 9, 1982 |
| Priority date | — |
| Expiry date | Mar 23, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P43/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Novel indolobenzoxazines of the formula ##STR1## wherein R is selected from the group consisting of hydrogen, alkyl of 1 to 5 carbon atoms and optionally substituted aralkyl of 7 to 12 carbon atoms, R.sub.1 is selected from the group consisting of hydrogen, chlorine and bromine, R.sub.2 ' is selected from the group consisting of hydrogen, optionally substituted alkyl of 1 to 5 carbon atoms, cycloalkylalkyl of 4 to 7 carbon atoms, alkenyl and alkynyl of 3 to 7 carbon atoms and optionally substituted aralkyl of 7 to 12 carbon atoms and the dotted line between 5 and 5a indicates the optional presence of a double bond and their non-toxic, pharmaceutically acceptable acid addition salts having hypotensive, antihypertensive and dopaminergic agonist properties and a process for their preparation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.