Ethers of 7-hydroxy-coumarin useful as medicaments
申请人:Unicler
公开号:US04151291A1
公开(公告)日:1979-04-24
The invention provides novel esters of 7-hydroxycoumarin of the formula ##STR1## in which each of R.sub.1 and R.sub.2 represents a hydrogen atom, a C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkenyl, carboxy, carboxylate, C.sub.2 -C.sub.5 alkoxycarbonyl or nitrophenyl group, and R.sub.3 represents a hydrogen atom or a group of the formula --CH.sub.2 --Z in which Z represents a di(C.sub.1 -C.sub.4 alkyl)amino group, or a saturated heterocyclic amino radical containing 5 to 7 ring members which may contain a further heteroatom, and their pharmaceutically acceptable acid addition salts. The compounds are useful as medicaments, in particular as analgesics.
Novel coumarin derivatives and the salts thereof, a process for the preparation thereof and their use in the pharmaceutical field
申请人:——
公开号:US20040023893A1
公开(公告)日:2004-02-05
The present invention relates to novel coumarin derivatives of formula (I) wherein: X═O or S; n=zero, 1, 2, 3 or 4; R
5
and R
6
, which can be the same or different, are optionally unsaturated C
1
-C
4
alkyl groups, or together with the nitrogen atom they form a residue of cyclic amines optionally containing other heteroatoms; R
1
═CH
3
or phenyl; R
2
and R
4, which can be the same or different, are H, OH, allyl, halogen or methyl.
1