申请人:Sanofi
公开号:US04977274A1
公开(公告)日:1990-12-11
The invention relates to new 4-hydroxyindole derivatives of general formula: ##STR1## in which R represents a labile protective group and R.sub.1 can represent hydrogen, a C.sub.1 -C.sub.6 alkyl radical, a C.sub.3 -C.sub.6 cycloalkyl radical, a lower alkoxy radical, a lower hydroxyalkyl radical, a lower (lower alkoxy) alkyl radical, a phenyl radical optionally substituted with a halogen atom or a lower alkyl or lower alkoxy radical, a cyano radical, a radical of formula ##STR2## in which R.sub.2 and R.sub.3, which may be identical or different, each represent hydrogen or a lower alkyl radical, R.sub.4 represents a hydroxy group, a lower alkyl or lower alkoxy radical or a radical ##STR3## in which R.sub.2 and R.sub.3 have the same meaning as above, R.sub.5 represents a lower alkyl radical and Alk represents a single bond or a straight- or branched-chain alkylene radical having from 1 to 4 carbon atoms. The invention also relates to a process for preparing 4-(3-amino-2-hydroxypropoxy)indole derivatives from the said 4-hydroxyindole derivatives.
该发明涉及一般式为新的4-羟基吲哚衍生物:##STR1##其中R代表一个不稳定的保护基团,R.sub.1可以代表氢,C.sub.1 -C.sub.6烷基基团,C.sub.3 -C.sub.6环烷基基团,较低的烷氧基团,较低的羟基烷基基团,较低的(较低的烷氧基)烷基基团,苯基基团,可选择地取代卤素原子或较低的烷基或较低的烷氧基团,氰基团,式中R.sub.2和R.sub.3,可以相同也可以不同,每个代表氢或较低的烷基基团,R.sub.4代表一个羟基,较低的烷基或较低的烷氧基团或一个基团##STR3##其中R.sub.2和R.sub.3的含义与上述相同,R.sub.5代表较低的烷基基团,Alk代表一个单键或具有1到4个碳原子的直链或支链烷基基团。该发明还涉及一种从所述4-羟基吲哚衍生物制备4-(3-氨基-2-羟基丙氧基)吲哚衍生物的方法。