申请人:KISSEI PHARMACEUTICAL CO., LTD.
                            
                            
                                公开号:EP0821022A1
                            
                            
                                公开(公告)日:1998-01-28
                            
                            
A poly(phenylene ether) resin composed of structural units represented by the general formula:
 (wherein R1, R2 and R3 represent each alkyl, cycloalkyl, etc. or H provided that two or more of R1, R2 and R3 do not represent H at the same time, or one of R1, R2 and R3 represents alkyl or H while the others together form a saturated ring, or R1, R2 and R3 together form an aromatic ring; A represents alkyl; p is an integer of from 3 to 5; and Y-represents a pharmaceutically acceptable acid residue and/or structural units represented by the general formula:
 wherein R4, R5 and R6 each represents alkyl, cycloalkyl, etc. or H provided that two or more of R4, R5 and R6 do not represent H at the same time, or one of R4, R5 and R6, represents alkyl or H while the others together form a saturated ring, or R4, R5 and R6 together form an aromatic ring; and A, p and Y- have same meanings as defined above and structural units represented by the general formula:
 wherein R7 and R8 each represents alkyl, cycloalkyl, etc. or together form a saturated ring; q is an integer of from 3 to 20; and A, p, and Y- have same meanings as defined above wherein the sum of the contents of the structural units represented by the general formula (II) amounts to 40 to 96 % by mole and the content of the structural units represented by the general formula (III) amounts to 4 to 60 % by mole based upon the content of phenylene ether component and a process for producing the same. The poly(phenylene ether) resins have the effect of absorbing bile acids and are useful as cholesterol reducing agents.
                            由通式所代表的结构单元组成的聚亚苯基醚
树脂:
 (其中 R1、R2 和 R3 各自代表烷基、环烷基等或 H,条件是 R1、R2 和 R3 中的两个或两个以上不同时代表 H,或 R1、R2 和 R3 中的一个代表烷基或 H,而其它三个一起形成饱和环,或 R1、R2 和 R3 一起形成芳香环;A 代表烷基;p 是 3 至 5 的整数;Y 代表药学上可接受的酸残基和/或通式所代表的结构单元:
 其中 R4、R5 和 R6 各自代表烷基、环烷基等或 H,条件是 R4、R5 和 R6 中的两个或两个以上不同时代表 H,或 R4、R5 和 R6 中的一个代表烷基或 H,而其它共同形成一个饱和环,或 R4、R5 和 R6 共同形成一个芳香环;A、p 和 Y- 的含义与上述定义相同,结构单元由通式表示:
 其中 R7 和 R8 各自代表烷基、环烷基等,或共同形成一个饱和环;q 为 3 至 20 的整数;A、p 和 Y- 的含义与上述定义相同,其中通式(II)所代表的结构单元的含量总和为 40% 至 96%(以摩尔计),通式(III)所代表的结构单元的含量为 4% 至 60%(以摩尔计),以亚苯基醚组分的含量为基础,以及生产亚苯基醚的工艺。聚亚苯基醚
树脂具有吸收
胆汁酸的作用,可用作
胆固醇还原剂。