申请人:Laboratories Pharmascience
公开号:US05804580A1
公开(公告)日:1998-09-08
Compounds are provided corresponding to the following general formula (I): in which:--R.sub.1 and R.sub.2, independently of each other, represent an alkyl group with 1 to 3 carbon atoms, or a group of formula --CH.sub.2 --OR.sub.a, R.sub.a representing a hydrogen atom or a methyl group R.sub.x represents: an alkyl group with 1 to 3 carbon atoms, in particular a methyl group, or an --OR.sub.x1 group, R.sub.x1 representing an alkyl group with 1 to 3 carbon atoms, in particular a methoxy group, or a group of formula --CH.sub.2 --X in which X represents a halogen atom, in particular chlorine, or a group of formula (a) ##STR1## in which: R.sub.3 and R.sub.5, independently of each other, represent a hydrogen atom, or an --OH group, or an --OCH.sub.3 group, R.sub.4 represents a hydrogen atom, or an --OR.sub.b group, R.sub.b representing a hydrogen atom or a methyl group, or R.sub.4 represents a group of formula --Or.sub.c, R.sub.c representing a group of formula --CH.sub.2 --CO--C.sub.6 H.sub.4 R'. The present compounds are benzoxazine derivatives which are used for treating pathological conditions associated with the presence of free radicals, such as Alzheimer's disease, and methods are provided for preparation of these compounds.
提供与以下通式(I)相应的化合物:其中:- R.sub.1和R.sub.2彼此独立地表示具有1到3个碳原子的烷基基团,或者表示为-CH.sub.2-OR.sub.a的公式组,其中R.sub.a表示氢原子或甲基基团,R.sub.x表示:具有1到3个碳原子的烷基基团,特别是甲基基团,或-OR.sub.x1基团,其中R.sub.x1表示具有1到3个碳原子的烷基基团,特别是甲氧基基团,或者表示为-CH.sub.2-X的公式组,其中X表示卤素原子,特别是氯原子,或者表示为(a)的公式组##STR1##其中:R.sub.3和R.sub.5彼此独立地表示氢原子,或-OH基团,或-OCH.sub.3基团,R.sub.4表示氢原子,或-OR.sub.b基团,其中R.sub.b表示氢原子或甲基基团,或R.sub.4表示公式-Or.sub.c的基团,其中R.sub.c表示公式-CH.sub.2-CO-C.sub.6H.sub.4R'的基团。这些化合物是苯并噁嗪衍生物,用于治疗与自由基存在相关的病理状况,如阿尔茨海默病,并提供了制备这些化合物的方法。