Conformationally semi-constrained quinoxaline 2,3-diones as neuroprotective agents
申请人:——
公开号:US20020065415A1
公开(公告)日:2002-05-30
Described are neuroprotective agents of Formula I
1
wherein
R is an amino acid, a derivative thereof, or nitrogen heterocyclic ring which is saturated or unsaturated of from 5 to 8 members which may have additional oxygen or sulfur atoms therein and which may be substituted by one or more substituents selected from:
alkyl of from 1 to 4 carbon atoms,
hydroxyl,
alkoxy of from 1 to 4 carbon atoms,
—CF
3
,
—CN,
-amino,
—C(O)R
11
,or
—(CH
2
)
n
-aryl of from 6 to 12 carbon atoms;
R must be attached through a carbon to the quinoxalinyl ring;
R
1
is H, alkyl of from 1 to 4 carbon atoms, phosphonoalkyl of from 1 to 4 carbon atoms, phosphoroalkyl of from 1 to 4 carbon atoms, carboxyalkyl of from 1 to 4 carbon atoms, —(CH
2
)
m
C(O)R
11
, or hydroxy;
R
2
is hydrogen, hydroxy, or amine;
R
3
and R
4
are each independently H, alkyl of from 1 to 4 carbon atoms, cycloalkyl of from 5 to 7 carbon atoms, alkenyl of from 2 to 6 carbon atoms, halogen, haloalkyl of from 1 to 6 carbon atoms, nitro, cyano, SO
2
CF
3
, CH
2
SO
2
R
7
, (CH
2
)
m
CO
2
R
7
, (CH
2
)
m
CONR
7
R
8
, (CH
2
)
m
SO
2
NR
8
R
9
, or NHCOR
7
;
R
5
is H, alkyl of from 1 to 4 carbon atoms, alkenyl of from 2 to 6 carbon atoms, cycloalkyl of from 5 to 7 carbon atoms, halogen, haloalkyl of from 1 to 4 carbon atoms, —(CH
2
)
m
aryl of from 6 to 10 carbon atoms, nitro, cyano, SO
2
CF
3
, (CH
2
)
m
CO
2
R
9
, (CH
2
)
m
CONR
9
R
10
, SO
2
NR
9
R
10
, SO
2
R
7
, (CH
2
)
m
SO
2
R
7
, NHCOR
9
, —(CH
2
)
m
heterocyclic of from 6 to 10 atoms which may contain nitrogen, oxygen, sulfur, and/or —(CH
2
)
n
R;
R
5
may be joined at R
4
to form a cyclic aromatic or a heterocyclic ring of from 5 to 7 members which may contain nitrogen, oxygen, or sulfur;
R
7
, R
8
, R
9
, and R
10
are each independently selected from hydrogen, alkyl of from 1 to 4 carbon atoms, cycloalkyl of from 5 to 7 carbon atoms, haloalkyl of from 1 to 4 carbon atoms, or —(CH
2
)
m
R
11
;
R
11
is alkyl or alkoxy of from 1 to 4 carbon atoms, hydroxy, or amino;
m is an integer of from 0 to 4;
n is an integer of from 0 to 4;
(m may or may not be equal to n);
or a pharmaceutically acceptable salt thereof.
本文描述了公式I1的神经保护剂,其中R是氨基酸、其衍生物或氮杂环环,其饱和或不饱和,由5到8个成员组成,其中可能有额外的氧或硫原子,并且可能被一个或多个取代基所取代,所选的取代基包括:碳链为1到4个碳原子的烷基,羟基,碳链为1到4个碳原子的烷氧基,-CF3,-CN,-氨基,-C(O)R11或-(CH2)n-芳基,其由6到12个碳原子组成;R必须通过一个碳原子连接到喹啉基环上;R1是氢,碳链为1到4个碳原子的烷基,碳链为1到4个碳原子的膦酸烷基,碳链为1到4个碳原子的膦酰烷基,碳链为1到4个碳原子的羧基烷基,-(CH2)mC(O)R11或羟基;R2是氢,羟基或胺基;R3和R4各自独立地是氢,碳链为1到4个碳原子的烷基,环烷基为5到7个碳原子,碳链为2到6个碳原子的烯基,卤素,碳链为1到6个碳原子的卤代烷基,硝基,氰基,SO2CF3,CH2SO2R7,(CH2)mCO2R7,(CH2)mCONR7R8,(CH2)mSO2NR8R9或NHCOR7;R5是氢,碳链为1到4个碳原子的烷基,碳链为2到6个碳原子的烯基,环烷基为5到7个碳原子,卤素,碳链为1到4个碳原子的卤代烷基,-(CH2)maryl,其由6到10个碳原子组成,硝基,氰基,SO2CF3,(CH2)mCO2R9,(CH2)mCONR9R10,SO2NR9R10,SO2R7,(CH2)mSO2R7,NHCOR9,-(CH2)mheterocyclic,其由6到10个原子组成,其中可能含有氮、氧、硫和/或-(CH2)nR;R5可以在R4处连接,形成由5到7个成员组成的环芳香族或杂环环,其中可能含有氮、氧或硫;R7、R8、R9和R10各自独立地选择自氢,碳链为1到4个碳原子的烷基,环烷基为5到7个碳原子,碳链为1到4个碳原子的卤代烷基或-(CH2)mR11;R11是碳链为1到4个碳原子的烷基或烷氧基,羟基或氨基;m是0到4的整数;n是0到4的整数;(m可能等于或不等于n);或其药学上可接受的盐。