申请人:Astellas Pharma Inc.
公开号:US20130053369A1
公开(公告)日:2013-02-28
The purpose is to provide a compound which has an intestinal phosphate transporter (NPT-IIb) inhibitory action and is useful as an active ingredient of an agent for treating and/or preventing hyperphosphatemia.
A tetrahydrobenzothiophene compound of the following formula (I) has NPT-IIb inhibitory action and can be used as an agent for treating and/or preventing hyperphosphatemia:
wherein, R
1
represents —O-lower alkyl, -lower alkylene-phenyl, or the like; R
2
and R
3
are the same as or different from each other and represent H, lower alkyl, cycloalkyl, aryl, heteroaryl or the like, or, R
2
and R
3
may be combined with a nitrogen atom to which they bind to form 5- to 7-membered saturated cyclic amino; R
4
's are the same as or different from each other and represent halogen, lower alkyl; and n represents 0 to 2.
本发明旨在提供一种具有肠道磷酸盐转运体(NPT-IIb)抑制作用的化合物,可用作治疗和/或预防高磷血症的活性成分。以下式(I)的四氢苯并噻吩化合物具有NPT-IIb抑制作用,可用作治疗和/或预防高磷血症的药剂:其中,R1表示-低碳基氧基,-低碳基亚烷基苯基或类似物;R2和R3相同或不同,表示H,低碳基,环烷基,芳基,杂环芳基或类似物,或R2和R3可以与它们结合的氮原子结合形成5-至7-成员饱和环氨基;R4相同或不同,表示卤素,低碳基;n表示0至2。