2,4,5,6,7,8-Hexahydronaphtho[2,3-b]furan useful as an intermediate
US4885373A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1989 |
| Grant date | Dec 5, 1989 |
| Priority date | — |
| Expiry date | Jan 27, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D409/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds of general formula I, ##STR1## in which: R.sub.1 denotes a hydrogen atom or, with the proviso, however, that the amino radical is at the 7-position, a linear or branched alkyl radical containing 1 to 4 carbon atoms, PA0 R.sub.2 denotes a hydrogen atom or, with the proviso, however, that the amino radical is at the 6-position, a linear or branched alkyl radical containing 1 to 4 carbon atoms, PA0 R.sub.3 and R.sub.4, which may be identical or different, each denote a hydrogen atom, a benzyl radical, a cyclohexylmethyl radical, a linear or branched alkylene radical containing from 1 to 5 carbon atoms, a linear or branched alkyl radical containing from 1 to 10 carbon atoms (optionally substituted with a hydroxy radical, with a carboxy radical or with an alkoxy radical having 1 to 5 carbon atoms, with an alkoxycarbonyl radical having 2 to 6 carbon atoms, with an alkylphenyl radical or with an alkyl-2-thienyl radical), a halogenated alkyl radical containing from 1 to 5 carbon atoms, or form, together with the nitrogen to which they are attached, a 2-oxo-1-pyrrolidinyl radical, PA0 A-B denotes, with the oxygen to which it is attached, an ethyleneoxy radical, an ethynyleneoxy, a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.