申请人:OTSUKA PHARMACEUTICAL CO., LTD.
公开号:US20140024640A1
公开(公告)日:2014-01-23
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-dioxol-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并氮杂环化合物,可以长时间维持托瑞普坦的血药浓度,从而实现所需的药效。本发明的苯并氮杂环化合物由通式(1)表示,其中R1表示一个—CO—(CH2)n—COR2基团(其中n是1至4的整数,R2是(2-1)一个羟基;(2-2)一个较低的烷氧基,可选地取代一个羟基,一个较低的酰基,一个较低的酰氧基,一个较低的烷氧羰氧基,一个环烷基氧羰氧基,或5-甲基-2-氧代-1,3-二氧杂环戊-4-基)等。