Imidazopyridines pyrimidines and triazines for enhancing cognition as gaba-a-alphas 5 receoptor subtype ligands
申请人:Bettati Michela
公开号:US20060040940A1
公开(公告)日:2006-02-23
The present invention provides a pharmaceutical composition providing a compound of formula I or a pharmaceutically acceptable salt thereof in a pharmaceutically acceptable excipient: (I), in which: X and Y independently represent CH or N, with the proviso that if X is CH then Y is also CH; R
1
represents hydrogen, hydrocarbon, a heterocyclic group, halogen, cyano, trifluoromethyl, nitro, —OR
a
, —SR
a
, —SOR
a
, —SO
2
R
a
, —SO
2
NR
a
R
b
, —NR
a
R
b
, —NR
a
COR
b
, —NR
a
CO
2
R
b
, —COR
a
, —CO
2
R
a
, —CONR
a
R
b
or CR
a
═NOR
b
; R
a
and R
b
independently represent hydrogen, hydrocarbon or a heterocyclic group; V and W are independently selected from H, halogen, C
11-6
alkyl, OH and C
-1-6
alkoxy; Z represents H, halogen, CN, NO
2
, CF
3
, OCF
3
, CF
2
H, SCF
3
, R
2
, OR
3
, SR
3
, (CH
2
)pN(R
3
)
2
, O(CH
2
)pN(R
3
)
2
, SO
2
R
2
, SO
2
N(R
3
)
2
, COR
4
, CO
2
R
3
, CON(R
3
)
2
, NHCOR
4
, NR
1
(CH
2
)
n
heteroaryl or O(CH
2
)
n
heteroaryl the heteroaryl is optionally substituted by one, two or three groups chosen from C
1-6
alkyl, benzyl, (CH
2
)pN(R
3
)
2
, halogen and CF
3
, R
1
is C
1-6
alkyl, where n is 1 or 2 and p is 0, 1 or 2; with the proviso that at least one of V, W and Z is other than H; R
2
represents C
1-6
alkyl, C
3-6
cycloalkyl, C
3-6
cycloalkylC
1-4
alkyl, C
2-6
alkenyl, C
2-6
alkynyl or heteroaryl, any of which may bear a substituent selected from halogen, CN, NO
2
, CF
3
, OCF
3
, CF
2
H, SCF
3
, OH, C
1-4
alkoxy, C
1-4
alkoxycarbonyl, amino, C
1-4
alkylamino, or di(C
1-4
alkyl)amino; R
3
represents H or R
2
; or two R
3
groups bonded to the same nitrogen atom may complete a 5-7 membered nonaromatic heterocyclic ring; and R
4
represents R
3
or heteroaryl; the compounds are ligands for GABA-A receptors containing the alpha 5 subtype and thus are useful for enhancing cognition in individuals suffering from conditions such as Alzheimer's Disease.
本发明提供了一种制药组合物,其中包含式I的化合物或其药学上可接受的盐,以及药学上可接受的载体:(I),其中:X和Y独立地表示CH或N,但如果X是CH,则Y也是CH;R1表示氢、碳氢化合物、杂环基、卤素、氰基、三氟甲基、硝基、—ORa、—SRa、—SORa、—SO2Ra、—SO2NRaRb、—NRaRb、—NRaCORb、—NRaCO2Rb、—CORa、—CO2Ra、—CONRaRb或CRa═NORb;Ra和Rb独立地表示氢、碳氢化合物或杂环基;V和W独立地选自H、卤素、C11-6烷基、OH和C-1-6烷氧基;Z表示H、卤素、CN、NO2、CF3、OCF3、CF2H、SCF3、R2、OR3、SR3、(CH2)pN(R3)2、O(CH2)pN(R3)2、SO2R2、SO2N(R3)2、COR4、CO2R3、CON(R3)2、NHCOR4、NR1(CH2)n杂环基或O(CH2)n杂环基,其中杂环基可选地被来自C1-6烷基、苯甲基、(CH2)pN(R3)2、卤素和CF3的一个、两个或三个基团取代,R1是C1-6烷基,其中n为1或2,p为0、1或2;但要求V、W和Z中至少有一个不是H;R2表示C1-6烷基、C3-6环烷基、C3-6环烷基C1-4烷基、C2-6烯基、C2-6炔基或杂环基,其中任何一种可以携带来自卤素、CN、NO2、CF3、OCF3、CF2H、SCF3、OH、C1-4烷氧基、C1-4烷氧羰基、氨基、C1-4烷基氨基或二(C1-4烷基)氨基的取代基;R3表示H或R2;或者两个结合到同一氮原子上的R3基团可以形成一个5-7成员非芳香杂环环;R4表示R3或杂环基;这些化合物是GABA-A受体的配体,包含α5亚型,因此对于患有阿尔茨海默病等疾病的个体,有助于增强认知能力。