Lactam derivatives
US5183820A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1991 |
| Grant date | Feb 2, 1993 |
| Priority date | — |
| Expiry date | Apr 26, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D487/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention provides potent and selective antagonists of 5-HT at 5-HT.sub.3 receptors which are tricyclic lactams of the formula (I) ##STR1## wherein Im represents an imidazolyl group of the formula: ##STR2## and R.sup.1 represents a hydrogen atom or a group selected from C.sub.1-6 alkyl, C.sub.3-6 alkenyl, C.sub.3-10 alkynyl, C.sub.3-7 cycloalkyl, C.sub.3-7 cycloalkylC.sub.1-4 alkyl, phenyl, phenylC.sub.1-3 alkyl, --CO.sub.2 R.sup.5, --COR.sup.5, --CONR.sup.5 R.sup.6 or --SO.sub.2 R.sup.5 ; PA0 one of the groups represented by R.sup.2, R.sup.3 and R.sup.4 is a hydrogen atom or a C.sub.1-6 alkyl, C.sub.3-7 cycloalkyl, C.sub.3-6 alkenyl, phenyl or phenylC.sub.1-3 alkyl group, and each of the other two groups, which may be same or different, represents a hydrogen atom or a C.sub.1-6 alkyl group; PA0 Y represents the group CH.dbd.CH or (CH.sub.2).sub.n, wherein n represents 2 or 3; PA0 Q represents a halogen atom, or a group selected from hydroxy, C.sub.1-4 alkoxy, phenylC.sub.1-3 alkoxy, C.sub.1-6 alkyl, cyano, phenyl which may be unsubstituted or substituted by one or more C.sub.1-4 alkyl, C.sub.1-4 alkoxy or hydroxy groups or halogen atoms, --NR.sup.7 R.sup.8, --CONR.sup.7 R.sup.…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.