申请人:Hoffmann-La Roche Inc.
公开号:US20160244441A1
公开(公告)日:2016-08-25
The invention relates to compounds of formulas I and II
wherein
R
1
is hydrogen, lower alkyl, lower alkoxy, halogen, S-lower alkyl, lower alkoxy substituted by halogen, di-lower alkyl amino, C(O)O-lower alkyl, lower alkyl substituted by hydroxy or hydroxy;
R
2
is hydrogen, lower alkyl, halogen, lower alkoxy, S-lower alkyl, lower alkoxy substituted by halogen, O(CH
2
)
2
-lower alkoxy substituted by halogen, di-lower alkyl amino, alkyl amino, NH-lower alkyl substituted by halogen, N(lower alkyl)-benzyl, lower alkyl substituted by hydroxy, heterocycloalkyl optionally substituted by halogen, CH
2
-lower alkoxy, CH
2
-lower alkoxy substituted by halogen or hydroxy; or
R
1
and R
2
form together with the carbon atoms to which they are attached a ring containing —OCH
2
CH
2
O—, OCH
2
O—, OCH
2
CH
2
CH
2
O— or —NHC(O)CH
2
O—;
R
3
is hydrogen or lower alkoxy;
R
4
is hydrogen or lower alkyl;
R
5
is lower alkyl, cycloalkyl, lower alkyl substituted by hydroxy or lower alkyl substituted by halogen; or
R
4
and R
5
form together with the nitrogen atom to which they are attached a ring containing —CH
2
CH
2
CHRCH
2
CH
2
—, —CH
2
CHRCH
2
CH
2
—, —CH
2
CH
2
OCH
2
CH
2
—CH
2
CH
2
NR′CH
2
CH
2
—, CH
2
CHR— or —CH
2
CH
2
CH
2
—; wherein
R is hydrogen, halogen, lower alkyl, lower alkoxy or lower alkyl substituted by halogen;
R′ is lower alkyl substituted by halogen;
R
a
is hydrogen or
3
H;
R
b
is hydrogen, hydroxy or
3
H;
R
6
is hydrogen, halogen or lower alkyl;
HetAr is selected from the group consisting of thiophenyl, furanyl, thiozolyl, benzofuranyl, pyrazolyl, benzoimidazolyl or pyridinyl;
n is 1 or 2;
or to a pharmaceutically acceptable acid addition salt, to a racemic mixture or to its corresponding enantiomer and/or optical isomers thereof.
The present compounds are suitable as imaging tool, which will improve diagnosis by identifying potential patients with excess of tau aggregates in the brain, which may be likely to develop Alzheimer's disease.
该发明涉及公式I和II的化合物,其中:R1为氢,低烷基,低烷氧基,卤素,S-低烷基,低烷氧基取代的卤素,二烷基氨基,C(O)O-低烷基,低烷基取代的羟基或羟基;R2为氢,低烷基,卤素,低烷氧基,S-低烷基,低烷氧基取代的卤素,O(CH2)2-低烷氧基取代的卤素,二烷基氨基,烷基氨基,NH-低烷基取代的卤素,N(低烷基)-苄基,低烷基取代的羟基,杂环烷基可选地取代卤素,CH2-低烷氧基,CH2-低烷氧基取代的卤素或羟基;或R1和R2与它们所连接的碳原子一起形成一个环,其中包含-OCH2CH2O-、OCH2O-、OCH2CH2CH2O-或-NHC(O)CH2O-;R3为氢或低烷氧基;R4为氢或低烷基;R5为低烷基,环烷基,低烷基取代的羟基或低烷基取代的卤素;或R4和R5与它们所连接的氮原子一起形成一个环,其中包含-CH2CH2CHRCH2CH2-、-CH2CHRCH2CH2-、-CH2CH2OCH2CH2-CH2CH2NR′CH2CH2-、CH2CHR-或-CH2CH2CH2-;其中R为氢,卤素,低烷基,低烷氧基或低烷基取代的卤素;R′为低烷基取代的卤素;Ra为氢或3H;Rb为氢,羟基或3H;R6为氢,卤素或低烷基;HetAr选自噻吩基,呋喃基,噻唑基,苯并呋喃基,吡唑基,苯并咪唑基或吡啶基;n为1或2;或其药学上可接受的酸加成盐,其外消旋混合物或其对应的对映异构体和/或光学异构体。这些化合物适用于成像工具,通过识别大脑中tau聚集过多的潜在患者,有助于改善诊断,这可能会导致阿尔茨海默病的发展。