Heterocyclic cyclic ethers
US5302603A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 18, 1992 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Dec 18, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D405/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a heterocyclic cyclic ether of the formula I ##STR1## wherein Q is an optionally substituted 6-membered monocyclic or 10-membered bicyclic heterocyclic moiety containing one or two nitrogen atoms; PA0 A is (1-6C)alkylene, (3-6C)alkenylene, (3-6C)alkynylene or cyclo(3-6C)alkylene; PA0 X is oxy, thio, sulphinyl, sulphonyl or imino; PA0 Ar is phenylene which may optionally bear one or two substituents or Ar is an optionally substituted 6-membered heterocyclene moiety containing up to three nitrogen atoms; PA0 R.sup.1 and R.sup.2 together form a group of the formula --A.sup.2 --X.sup.2 --A.sup.3 -- which, together with the oxygen atom to which A.sup.2 is attached and with the carbon atom to which A.sup.3 is attached, defines a ring having 5 to 7 ring atoms, wherein A.sup.2 and A.sup.3 each is (1-3C)alkylene and X.sup.2 is oxy, thio, sulphinyl, sulphonyl or imino, and which ring may bear one, two or three substituents; and PA0 R.sup.3 is hydrogen, (1-6C)alkyl, (2-6C)alkenyl, (2-6C)alkynyl or substituted (1-4C)alkyl; PA0 or a pharmaceutically-acceptable salt thereof. The compounds of the invention are inhibitors of the enzyme 5-lipoxygenase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.