申请人:Arnsten Amy F.T.
公开号:US20090221610A1
公开(公告)日:2009-09-03
The present invention relates to the use of inhibitors or blockers of I
h
(hyperpolarization-activated cationic current) channels in the treatment of cognitive disorders. In preferred aspects of the present invention, an effective amount of a compound is administered to a patient in need, wherein the compound has the chemical structure: Where R
1
is H, or an optionally substituted C
1
-C
3
alkyl, preferably a C
2
alkyl (ethyl) group; R
2
is an optionally substituted C
1
-C
3
alkyl group, preferably a methyl group; R
3
is H, an optionally substituted C
1
-C
3
alkyl (preferably methyl), a halogen or 0(Ci-Ca) alkyl; R
4
is an optionally substituted C
1
-C
6
alkyl, C(O)—(C
1
-C
5
)alkyl, C(O)-aryl, C(O)O—(C
1
-C
4
)alkyl, C(O)O-aryl, or an optionally substituted heterocyclic, aryl or heteroaryl group; R
4
is H or an optionally substituted C
1
-C
6
(preferably a C
1
-C
3
) alkyl; R
5
, R
6
and R
7
are each independently H, halogen, an optionally substituted C
1
-C
6
alkyl (preferably, an optionally substituted C
1
-C
3
alkyl), 0-(C
1
-C
3
) alkyl, or an optionally substituted heterocyclic, aryl or heteroaryl group; Y
−
is an anion of a pharmaceutically acceptable salt (a physiologically acceptable anion, preferably a Cl
−
, Br
−
, I
−
, OAc
−
); or a solvate or polymorph thereof, optionally, in combination with guanfacine and/or chelerythrine, and a pharmaceutically acceptable carrier, additive or excipient to a patient in need of therapy.