申请人:Kondo Kazumi
公开号:US20110071084A1
公开(公告)日:2011-03-24
The present invention provides a benzazepine compound that can maintain for a long period of time the blood level of tolvaptan enabling to provide the desired pharmaceutical effects. The benzazepine compound of the present invention is represented by general formula (1)
wherein R
1
represents a —CO—(CH
2
)
n
—COR
2
group (wherein n is an integer of 1 to 4, and R
2
is (2-1) a hydroxy group; (2-2) a lower alkoxy group optionally substituted with a hydroxy group, a lower alkanoyl group, a lower alkanoyloxy group, a lower alkoxycarbonyloxy group, a cycloalkyloxycarbonyloxy group, or 5-methyl-2-oxo-1,3-dioxo-4-yl; or (2-3) an amino group optionally substituted with a hydroxy-lower alkyl group), or the like.
本发明提供了一种苯哌啶化合物,可以长时间维持托瑞那汀的血药浓度,从而实现所需的药效。本发明的苯哌啶化合物由通式(1)表示,其中R1代表一个—CO—(CH2)n—COR2基团(其中n为1至4的整数,R2为(2-1)一个羟基;(2-2)一个可选择地取代有羟基、较低烷氧基、较低烷酰基、较低烷酰氧基、较低烷氧羰氧基、环烷氧羰氧基或5-甲基-2-氧代-1,3-二氧代-4-基的较低烷氧羰氧基;或(2-3)一个可选择地取代有羟基较低烷基基团的氨基),等等。