申请人:Khan Nawaz Mohammed
公开号:US20110166136A1
公开(公告)日:2011-07-07
Compounds of formula (1), salts and pro-drugs wherein:
R1, R2, R3 and R4 are hydrogen, alkyl, hydroxyalkyl, halogen, haloalkyl, alkoxy, haloalkoxy, alkoxycarbonyl, carboxyl, hydroxyl, nitro, amino, monalkylamino, dialkylamino, acylamino, alkoxycarbonylamino, alkylsulphonyl, arylsulphonyl, alkylsulphonylamino, arylsulphonylamino, aminosulphonyl or cyano, or
any two of R1 to R4 that are adjacent on the ring may together represent the moiety —O—(CH
2
)
n
—O— wherein n is 1 to 3;
R5 is hydrogen or alkyl;
R6 is hydrogen or alkyl; and
X is selected from the group consisting of:
(a) groups of formula OR7 wherein R7 is hydrogen or alkyl which is optionally substituted with a substituent selected from alkylsulfonylalkyl, saturated or partially unsaturated heterocyclic, alkoxy, carboxyl, nitro, amino, monalkylamino, dialkylamino, halogen, and alkoxycarbonyl,
provided that when R7 is hydrogen or ethyl, then R1, R2, R3 and R4 cannot be selected from hydrogen, halogen and alkyl; and
(b) groups of formula NR8R9 wherein R8 and R9 together with the nitrogen atom to which they are attached form a saturated or partially unsaturated heterocyclic group which optionally contains at least one more heteroatom selected from nitrogen, oxygen and sulphur atoms, said saturated or partially unsaturated heterocyclic group optionally further being substituted by one or more substituents selected from alkyl, halogen, haloalkyl, alkoxy, alkoxycarbonyl, carboxyl, nitro, amino, monalkylamino, dialkylamino and hydroxyl,
provided that:
(i) when R8+R9+N=piperazine, and ≧1 of R1 to R4 are hydrogen, hydroxyl, nitro, amino, alkylamino, dialkylamino, alkoxycarbonylamino, halogen, alkoxy or alkyl, the nitrogen atom at the 4-position of the piperazine is not alkyl substituted,
(ii) when each of R1, R2, R3, R4, R5 and R6 is hydrogen, X is not unsubstituted piperazinyl or unsubstituted morpholino,
(iii) when each of R1, R2, R4, R5 and R6 is hydrogen and R3 hydrogen, bromine or hydroxyl, X is not methoxy,
(iv) when each of R2 and R3 is methoxy or they together represent —O—CH
2
—O— and each of R1, R4, R5 and R6 is hydrogen, X is not unsubstituted piperidine,
are Cavx channel blockers and are of use in the treatment of various conditions including pain.
公式(1)的化合物,盐和前药,其中:
R1、R2、R3和R4分别为氢、烷基、羟基烷基、卤素、卤基烷基、烷氧基、卤基烷氧基、烷氧羰基、羧基、羟基、硝基、氨基、单烷基氨基、双烷基氨基、酰胺基、烷氧羰胺基、烷基磺酰基、芳基磺酰基、烷基磺酰胺基、芳基磺酰胺基、氨基磺酰基或氰基,或者相邻的R1到R4中的任意两个可以共同表示—O—(CH2)n—O—基团,其中n为1到3;
R5为氢或烷基;
R6为氢或烷基;
X选自以下组:
(a)OR7式基团,其中R7为氢或烷基,可选地被选自烷基磺酰基烷基、饱和或部分不饱和杂环、烷氧基、羧基、硝基、氨基、单烷基氨基、双烷基氨基、卤素和烷氧羰基的取代基替换,前提是当R7为氢或乙基时,R1、R2、R3和R4不能被选择为氢、卤素和烷基;
(b)NR8R9式基团,其中R8和R9与它们所连接的氮原子共同形成饱和或部分不饱和的杂环基团,该杂环基团可选择地含有至少一个来自氮、氧和硫原子的其他杂原子,所述的饱和或部分不饱和的杂环基团可选择地进一步被一个或多个取代基替换,所述取代基被选自烷基、卤素、卤基烷基、烷氧基、烷氧羰基、羧基、硝基、氨基、单烷基氨基、双烷基氨基和羟基,前提是:
(i)当R8+R9+N=piperazine,且R1到R4中≧1个为氢、羟基、硝基、氨基、烷基氨基、双烷基氨基、烷氧羰胺基、卤素、烷氧基或烷基时,哌嗪的4位氮原子不被烷基取代,
(ii)当R1、R2、R3、R4、R5和R6都为氢时,X不是未取代的哌嗪基或未取代的吗啡环基,
(iii)当R1、R2、R4、R5和R6都为氢且R3为氢、溴或羟基时,X不是甲氧基,
(iv)当R2和R3都为甲氧基或它们共同表示—O—CH2—O—,且R1、R4、R5和R6都为氢时,X不是未取代的哌啶基,
它们是Cavx通道阻滞剂,可用于治疗包括疼痛在内的各种疾病。