申请人:Boehringer Mannheim GmbH
公开号:US04609673A1
公开(公告)日:1986-09-02
The present invention provides carboxylic acid derivatives of the general formula: ##STR1## wherein R is a hydrogen atom, alkyl, a metal cation or an ammonium or alkylammonium ion, R.sub.1 is a hydrogen atom, a hydroxyl group or an alkyl, O-alkyl,O-benzyl or O-acyl radical, R.sub.2 is a hydrogen atom or an alkyl, aryl or aralkyl radical, n is 0, 1 or 2 and R.sub.3 is an acyl radical, this radical being (a) a straight-chained or branched, saturated or unsaturated alkanoyl radical containing 2 to 11 carbon atoms; or (b) the radical ##STR2## in which A is a straight-chained or branched, saturated or unsaturated aliphatic hydrocarbon radical containing up to 4 carbon atoms, which is optionally substituted by hydroxyl, and B is a straight-chained or branched, saturated or unsaturated aliphatic hydrocarbon radical containing up to 8 carbon atoms, which is optionally substituted one or more times by hydroxyl, carboxyl or phenyl, or B is a phenyl or cycloalkyl radical; or (c) the radical ##STR3## in which A and B have the same meanings as in (b) and R.sub.4 is a hydrogen atom or an alkyl or aralkyl radical; as well as the pharmacologically acceptable salts thereof. The present invention also provides processes for the preparation of these compounds, as well as pharmaceutical compositions containing them.
本发明提供了通式为:其中R是氢原子、烷基、金属阳离子或铵盐或烷基铵离子,R.sub.1是氢原子、羟基或烷基,O-烷基、O-苄基或O-酰基基团,R.sub.2是氢原子或烷基、芳基或芳基烷基基团,n为0、1或2,R.sub.3是酰基基团,该基团为(a)含有2至11个碳原子的直链或支链、饱和或不饱和的烷酰基基团;或(b)基团:其中A是含有最多4个碳原子的直链或支链、饱和或不饱和脂肪烃基团,可选地被羟基取代,B是含有最多8个碳原子的直链或支链、饱和或不饱和脂肪烃基团,可选地被羟基、羧基或苯基取代,或B是苯基或环烷基基团;或(c)基团:其中A和B的含义与(b)中相同,R.sub.4是氢原子或烷基或芳基烷基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基团的羟基酰基基