申请人:KANEKA CORPORATION
公开号:EP0787494A1
公开(公告)日:1997-08-06
A curative medicine for a digestive organ disease caused by the infection of Helicobacter comprising as an effective component a rifamycin derivative expressed by the formula (I) or the formula (II), or a physiologically acceptable salt thereof.
In the formula (I), X1 represents an oxygen atom or a sulfur atom, R1 represents an acetyl group or a hydrogen atom, R2 represents a hydroxy group or a hydrogen atom, R3 represents
[in which R4 and R5 are the same or different and each is an alkyl group having 1 to 3 carbon atoms or a group expressed by the formula
(in which m represents an integer between 1 and 3)], or
[in which R6 and R7 are the same or different and each is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, X2 represents an oxygen atom or a sulfur atom or NR8 R8 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms or -(CH2)nX3 (in which n represents an integer between 1 and 4, and X3 represents an alkoxy group having of 1 to 3 carbon atoms, or a vinyl group or an ethynyl group, or a group expressed by the formula
In the formula (II), R9 represents an alkyl group having 1 to 7 carbon atoms.
一种治疗由螺旋杆菌感染引起的消化器官疾病的药物,其有效成分包括由式(I)或式(II)表示的利福霉素衍生物,或其生理上可接受的盐。
在式 (I) 中,X1 代表氧原子或硫原子,R1 代表乙酰基或氢原子,R2 代表羟基或氢原子,R3 代表
[其中 R4 和 R5 相同或不同,且各为具有 1 至 3 个碳原子的烷基或由式表示的基团
(其中 m 代表 1 至 3 之间的整数)],或
[其中 R6 和 R7 相同或不同,且各自为氢原子或具有 1 至 3 个碳原子的烷基,X2 代表氧原子或硫原子或 NR8 R8 代表氢原子或具有 1 至 6 个碳原子的烷基或-(CH2)nX3(其中 n 代表 1 至 4 之间的整数,X3 代表具有 1 至 3 个碳原子的烷氧基,或乙烯基或乙炔基,或由式表示的基团)]。
在式 (II) 中,R9 代表具有 1 至 7 个碳原子的烷基。