Naphtho(2,1-b) furan derivatives
US4916148A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1988 |
| Grant date | Apr 10, 1990 |
| Priority date | — |
| Expiry date | Nov 4, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D405/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Naphtho[2,1-b]furan derivatives of the formula: ##STR1## wherein R.sup.1 is a 1H-1,2,4-triazol-1-yl, 4H-1,2,4-triazol-4-yl, 3-pyridyl or 5-pyrimidinyl radical or a 1H-imidazol-1-yl radical optionally substituted in the 5-position by a 1-6C alkyl or halogenoalkyl radical; PA1 R.sup.2 and R.sup.3, which may be the same or different, are each a hydrogen or deuterium atom, a cyano radical, a 1-6C alkyl or halogenoalkyl radical, a phenyl radical optionally substituted by halogen, or one of R.sup.2 and R.sup.3 is a radical of the formula R.sup.1 as defined above, and the other is hydrogen; PA1 R.sup.4 and R.sup.5, which may be the same or different, are each a 1-2C alkyl, deuterioalkyl or halogenoalkyl radical; PA1 or R.sup.4 and R.sup.5 together with the carbon atom to which they are attached form a 3-6C cycloalkyl radical; PA1 R.sup.6 and R.sup.7, which may be the same or different, are each a hydrogen or halogen atom, an amino, carboxy, carbamoyl, cyano, 1-cyano-1-methylethyl or nitro radical, a 1-6C alkyl or halogenoalkyl radical, a mono- or di-(1-6C)alkylcarbamoyl radical, a mono- or di-(1-6C)halogenoalkylcarbamoyl radical, a group of the formula --COR.sup.8, --SO.sub.n R.sup.8 or -…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.