申请人:Kobayashi Naotake
公开号:US20100160290A1
公开(公告)日:2010-06-24
A pharmaceutical composition for treating Alzheimer's disease containing a compound represented by the general formula (I);
wherein ring A is an optionally substituted carbocyclic group or an optionally substituted heterocyclic group;
E is lower alkylene, etc.;
X is S, O, or NR
1
;
R
1
is a hydrogen atom or lower alkyl;
R
2a
, R
2b
, R
3a
, R
3b
, R
4a
and R
4b
are each independently a hydrogen atom, halogen, hydroxy, etc.;
n and m are each independently an integer of 0 to 3;
n+m is an integer of 1 to 3; and
R
5
is a hydrogen atom, optionally substituted lower alkyl, etc.;
its pharmaceutically acceptable salt, or a solvate thereof as an active ingredient.