申请人:Sumitomo Dainippon Pharma Co., Ltd.
公开号:US20170107211A1
公开(公告)日:2017-04-20
The present invention provides a medicament for treating a disease involving Nav 1.7 such as neuropathic pain, nociceptive pain, inflammatory pain, small-fiber neuropathy, erythromelalgia, paroxysmal extreme pain disorder, dysuria, and multiple sclerosis, which comprises a compound of formula (I):
or a pharmaceutically acceptable salt thereof, wherein R
1a
, R
1b
, R
1c
and R
1d
are hydrogen, halogen, cyano, C
1-4
alkyl, C
1-4
alkoxy, or the like, provided that at least one of R
1a
, R
1b
, R
1c
and R
1d
is C
6-10
aryl, C
6-10
aryloxy, or the like, R
2
and R
3
are hydrogen, C
1-6
alkyl, C
3-10
cycloalkyl, or the like, R
4
is hydrogen, C
1-6
alkyl, C
3-7
cycloalkyl, or the like, m is 1, 2 or 3, L is CR
7
R
8
, and R
7
and R
8
are hydrogen, hydroxyl, C
1-4
alkyl, C
1-4
alkoxy, or the like.
本发明提供了一种治疗涉及Nav 1.7的疾病的药物,如神经病性疼痛、伤害性疼痛、炎症性疼痛、小纤维神经病、红色痛症、阵发性极端疼痛障碍、排尿困难和多发性硬化症的药物,其包括化合物的结构式(I)或其药用盐,其中R1a、R1b、R1c和R1d为氢、卤素、氰基、C1-4烷基、C1-4甲氧基等,至少其中一个为C6-10芳基、C6-10芳氧基等,R2和R3为氢、C1-6烷基、C3-10环烷基等,R4为氢、C1-6烷基、C3-7环烷基等,m为1、2或3,L为CR7R8,R7和R8为氢、羟基、C1-4烷基、C1-4甲氧基等。