申请人:Ciba-Geigy Corporation
公开号:US05064819A1
公开(公告)日:1991-11-12
Compounds of the formula I ##STR1## wherein R denotes an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic or araliphatic radical having 2 or more carbon atoms, and wherein one of the groups R.sup.1, R.sup.2 and R.sup.3 represents hydrogen or an aliphatic, cycloaliphatic, araliphatic or aromatic radical, another one of R.sup.1, R.sup.2 and R.sup.3 is hydrogen or, in the case of R.sup.1 and R.sup.2, is hydroxy, and the remaining one of R.sup.1, R.sup.2 and R.sup.3 is hydrogen, or wherein R denotes methyl, R.sub.1 denotes hydrogen or hydroxy, R.sub.2 denotes an aromatic radical and R.sub.3 represents hydrogen, and their salts have GABA.sub.B -antagonistic properties and can be used as GABA.sub.B -antagonists. They are obtained when in a compound of formula II ##STR2## in which R, R.sup.1, R.sup.2 and R.sup.3 have their previous significances, Z represents --NH.sub.2 and R.sup.4 denotes a hydroxy-protective group R.sup.5 or, when R.sup.1 and R.sup.3 denote hydrogen and R.sup.2 denotes hydrogen or alkyl, denotes an alkali metal or ammonium ion R.sup.6, or Z represents a protected or latent amino group Z.sup.0 and R.sup.4 denotes hydrogen or a hydroxy-protective group R.sup.5, any group R.sup.5 or R.sup.6 is replaced by hydrogen, and/or any group Z.sup.0 is converted into --NH.sub.2.
公式I的化合物##STR1##其中R表示具有2个或更多碳原子的脂肪族、环脂族、环脂族-脂肪族或芳基脂肪基,其中R.sup.1、R.sup.2和R.sup.3中的一个代表氢或脂肪族、环脂族、芳基脂肪基或芳香族基,R.sup.1、R.sup.2和R.sup.3中的另一个是氢或在R.sup.1和R.sup.2的情况下是羟基,而R.sup.1、R.sup.2和R.sup.3中的剩余一个是氢,或者R表示甲基,R.sub.1表示氢或羟基,R.sub.2表示芳基,R.sub.3表示氢,它们的盐具有GABA.sub.B-拮抗性质,可用作GABA.sub.B-拮抗剂。当在公式II的化合物中获得它们##STR2##其中R、R.sup.1、R.sup.2和R.sup.3具有其先前的含义,Z表示--NH.sub.2,R.sup.4表示羟基保护基R.sup.5或者当R.sup.1和R.sup.3表示氢且R.sup.2表示氢或烷基时,表示碱金属或铵离子R.sup.6,或者Z表示受保护或潜在的氨基Z.sup.0且R.sup.4表示氢或羟基保护基R.sup.5,任何一个R.sup.5或R.sup.6基团被氢取代,和/或任何一个Z.sup.0基团被转化为--NH.sub.2。