申请人:Ciba-Geigy Corporation
公开号:US05190934A1
公开(公告)日:1993-03-02
Compounds of the formula I ##STR1## wherein either R.sub.1 is halogen, R.sub.1 ' is halogen or hydrogen and R.sub.2 and R.sub.2 ' denote hydrogen or R.sub.1 and R.sub.1 ' represent hydrogen, R.sub.2 is an aliphatic or aromatic radical and R.sub.2 ' is hydroxy or R.sub.2 and R.sub.2 ' together represent oxo, and wherein R denotes an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic or araliphatic radical having 2 or more carbon atoms or, if R.sub.1 and R.sub.1 ' denote hydrogen, R.sub.2 represents an aromatic radical and R.sub.2 ' is hydroxy, R represents methyl, and their salts are useful as nootropics, antidepressants and/or anxiolytics. The can be manufacture by replacing any group R.sub.5 by hydrogen and/or converting any group Z.sub.0 into amino in a compound of formula II ##STR2## in which R, R.sub.1, R.sub.1 ', R.sub.2 and R.sub.2 ' have their previous significances, Z represents a protected or latent amino group Z.sub.0 and R.sub.4 denotes hydrogen or a hyddroxy-protective group R.sub.5, and wherein amino as a constituent of R and/or hydroxy R.sub.2 ' or oxo R.sub.2 +R.sub.2 ' may be present in a temporarily protected form.
式I的化合物##STR1##中,R.sub.1为卤素,R.sub.1'为卤素或氢,R.sub.2和R.sub.2'表示氢或R.sub.1和R.sub.1'代表氢,R.sub.2为脂肪族或芳香基团,R.sub.2'为羟基或R.sub.2和R.sub.2'一起表示羰基,其中R表示具有2个或更多碳原子的脂肪族、环脂肪族、环脂肪族-脂肪族或芳基脂肪族基团,或者如果R.sub.1和R.sub.1'表示氢,则R.sub.2表示芳香基团,R.sub.2'为羟基,R表示甲基,它们的盐可用作脑功能增强剂、抗抑郁剂和/或抗焦虑剂。可以通过将任何基团R.sub.5替换为氢和/或将任何基团Z.sub.0转化为氨基来制备,其中R、R.sub.1、R.sub.1'、R.sub.2和R.sub.2'具有其先前的含义,Z表示受保护或潜在的氨基团Z.sub.0,R.sub.4表示氢或羟基保护基团R.sub.5,氨基作为R的组分和/或羟基R.sub.2'或羰基R.sub.2+R.sub.2'可能以暂时受保护的形式存在于式II的化合物中##STR2##。