申请人:Daiichi Sankyo Company, Limited
公开号:US11034659B2
公开(公告)日:2021-06-15
Cystic fibrosis is developed through mutation of Cystic Fibrosis Transmembrane conductance Regulator (CFTR), which is one type of chloride channel. An object of the present invention is to provide compounds effective in the treatment of cystic fibrosis that open a chloride channel different from CFTR, which is the cause of the disease, and do not depend on CFTR.
Compounds of the present invention are compounds or pharmaceutically acceptable salts thereof that open calcium dependent chloride channels (CaCCs) via G-protein coupled receptor 39 (GPR39) agonism to have strong chloride ion-secretory action, and are represented by the following general formula (I):
General formula (I):
wherein,
X represents a carboxyl group or a tetrazolyl group;
Q represents a C1-C3 alkylene group, an oxygen atom, a sulfur atom, etc.;
G represents a phenyl group where the phenyl group may have 1 to 3 substituents independently selected from the group consisting of a halogen atom, a cyano group, a C1-C6 alkyl group, etc.;
R1 represents a C1-C6 alkyl group, etc.;
R2 represents a C1-C6 alkyl group that may have 1 to 3 substituents independently selected from the following group A, or a group selected from the following group B:
Group A: a phenyl group and a pyridyl group, wherein the phenyl group and the pyridyl group may have 1 to 3 substituents independently selected from the following group D;
Group B: —OH, —O-M, —SH, —S-M, —NH2, —NH-M, and —N-M2, wherein M is a C1-C6 alkyl group that may have 1 or 2 substituents independently selected from the following group C, or a C3-C6 cycloalkyl group that may have 1 or 2 substituents independently selected from the following group C;
Group C: a halogen atom, a cyano group, a phenyl group, a pyridyl group, etc., wherein the phenyl group and the pyridyl group may have 1 to 3 substituents independently selected from the following group D; and
Group D: a halogen atom, a cyano group, a C1-C6 alkyl group, etc.
囊性纤维化是通过囊性纤维化跨膜传导调节器(CFTR)的突变而形成的,CFTR 是氯离子通道的一种。本发明的目的之一是提供对治疗囊性纤维化有效的化合物,这种化合物能打开不同于致病原因 CFTR 的氯离子通道,并且不依赖于 CFTR。
本发明的化合物是通过 G 蛋白偶联受体 39(GPR39)激动作用打开钙依赖性氯离子通道(CaCC),从而具有强氯离子分泌作用的化合物或其药学上可接受的盐,由以下通式(I)表示:
通式(I):
其中
X 代表羧基或四唑基;
Q 代表 C1-C3 烯基、氧原子、硫原子等;
G 代表苯基,其中苯基可具有 1 至 3 个取代基,这些取代基独立地选自卤素原子、氰基、C1-C6 烷基等组成的组;
R1 代表 C1-C6 烷基等;
R2 代表 C1-C6 烷基,可具有 1 至 3 个独立选自以下 A 组的取代基,或一个选自以下 B 组的基团:
A 组:苯基和吡啶基,其中苯基和吡啶基可具有 1 至 3 个独立选自以下 D 组的取代基;
B组:-OH、-O-M、-SH、-S-M、-NH2、-NH-M和-N-M2,其中M是可具有1或2个独立选自以下基团C的取代基的C1-C6烷基,或可具有1或2个独立选自以下基团C的取代基的C3-C6环烷基;
C 组:卤素原子、氰基、苯基、吡啶基等,其中苯基和吡啶基可具有 1 至 3 个独立选自以下 D 组的取代基;以及
基团 D:卤素原子、氰基、C1-C6 烷基等。