申请人:Schering Aktiengesellschaft
公开号:US04705857A1
公开(公告)日:1987-11-10
Indole derivatives of formula I ##STR1## R is hydrogen, one or two halogen atoms or one or two organic radicals in the 4-, 5-, 6- or 7-position(s), R.sup.1 and R.sup.4 are the same or different and each is hydrogen, alkyl of 1 to 3 carbon atoms or alkoxyalkyl of 1 to 3 carbon atoms in each of the alkoxy and alkyl portions, R.sup.3 is phenyl, --COOalkyl, --PO.sub.3 (alkyl).sub.2, --SO.sub.2 aryl, --SO.sub.2 alkyl, ##STR2## each of 1 to 3 carbon atoms in each alkyl group, and A and B each independently is alkyl of 1 to 3 carbon atoms or together with the connecting N-atom form a pyrrolidono, piperidino, morpholino or piperazino group, are valuable intermediates for preparing valuable tryptophans and .beta.-carbolines.
公式I的吲哚衍生物:##STR1## R为氢、一个或两个卤素原子或4-、5-、6-或7-位上的一个或两个有机基团,R.sup.1和R.sup.4相同或不同,且每个都是1至3个碳原子的烷基或烷氧基烷基,在烷氧和烷基部分中每个都是1至3个碳原子,R.sup.3为苯基,--COO烷基,--PO.sub.3(烷基).sub.2,--SO.sub.2芳基,--SO.sub.2烷基,##STR2##每个烷基中都有1至3个碳原子,A和B各自独立地为1至3个碳原子的烷基,或者与连接的N原子一起形成吡咯烷酮、哌啶酮、吗啉或哌嗪基团,是制备有价值的色氨酸和β-咔啉的有价值中间体。