申请人:Kuhnil Pharmaceutical Co., Ltd.
公开号:US05696276A1
公开(公告)日:1997-12-09
5,8-dihydroxynaphthoquinone derivatives represented by the following general formula (IA): ##STR1## in which R.sup.1 represents alkyl or alkenyl, R.sup.2a represents alkyl or a group --C(O)R wherein R represents alkyl, alkenyl, aryl, aralkyl or aralkenyl, which can be substituted or unsubstituted with one or more halogen(s), and R.sup.3 represents hydrogen or alkyl, provided that when R.sup.2a is a group --C(O)R and R.sup.3 is hydrogen, R.sup.1 is other than 3-methyl-2-butenyl; and when R.sup.2a represents methyl and R.sup.3 independently represents hydrogen or methyl, R.sup.1 is other than 3-methylbutyl. Processes for preparing 5,8-dihydroxynaphthoquinone derivatives are also provided.
以下是以如下通式(IA)表示的5,8-二羟基萘醌衍生物:##STR1## 其中,R1代表烷基或烯基,R2a代表烷基或基团--C(O)R,其中R代表烷基,烯基,芳基,芳基烷基或芳基烯基,可以带有一个或多个卤素的取代基或未取代基,而R3代表氢或烷基,但当R2a为基团--C(O)R且R3为氢时,R1不是3-甲基-2-丁烯基;当R2a代表甲基且R3独立地代表氢或甲基时,R1不是3-甲基丁基。还提供了制备5,8-二羟基萘醌衍生物的过程。