Amine derivatives
US5654298A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1991 |
| Grant date | Aug 5, 1997 |
| Priority date | — |
| Expiry date | Apr 16, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D471/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention concerns novel aminopyridinium compounds of the formula I wherein R.sup.1, R.sup.2, R.sup.3, R.sup.5 and R.sup.6 are selected from the following combinations: ##STR1## (a) one of R.sup.2 and R.sup.6 is a basic group selected from amino, alkylamino, dialkylamino of up to eight carbon atoms, pyrrolidino, piperidino and morpholino, or is alkyl, alkenyl, alkoxyalkyl, alkoxy, alkylthio, phenyl, phenylalkyl, cycloalkyl or cycloalkylalkyl; and the other of R.sup.2 and R.sup.6 is hydrogen, alkyl or one of the above defined basic groups; PA1 R.sup.1 is alkyl, alkenyl, cycloalkyl, phenyl, phenylalkyl, cycloalkylalkyl; and R.sup.3 and R.sup.5 are independently hydrogen, alkyl or alkenyl; PA2 (b) R.sup.2 is a basic group as defined above, R.sup.5 and R.sup.6 together form alkylene or, together with the appendant carbon atoms of the pyridine ring, complete a benzene ring; has any of the meanings defined in PA2 (a) above; and R.sup.3 is hydrogen, alkyl or alkenyl; and PA2 (c) R2 has any of the meanings defined above and R.sup.6 is a group of the formula --NR.sup.7.A-- in which A together with R.sup.1 forms an ethylene, trimethylene or tetramethylene link and R.sup.7 is hydrogen or…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.