申请人:Eisai Chemical Co., Ltd.
公开号:US05412124A1
公开(公告)日:1995-05-02
Disclosed herein are a naphthoquinone derivative represented by the following formula: ##STR1## wherein R.sup.1 means a hydrogen atom or methyl group, R.sup.2 is a hydrogen atom or methyl group, n stands for 0 or an integer of 1-9, and a linkage is a single bond or double bond with the proviso that if n is an integer of 2-9, the linkages may be identical with or different optionally from each other, such as a vitamin K derivative; and a process for producing the naphthoquinone derivative at a high yield without forming any geometric isomer; as well as 1,4,4.sub.a,5,8,9.sub.a -hexahydro-4.sub.a .alpha.-alkenyl-1.alpha.,4.alpha.-methanoanthraquinone derivatives and 1,4,4.sub.a,5,8,9.sub.a -hexahydro-1.alpha.,4.alpha.-methanoanthraquinone derivatives which are useful as intermediates for the preparation of the naphthoquinone derivatives.
本公开涉及一种萘醌衍生物,其化学式如下:##STR1## 其中,R.sup.1代表氢原子或甲基,R.sup.2代表氢原子或甲基,n表示0或1-9的整数,连接是单键或双键,但如果n是2-9的整数,则连接可以是相同的或不同的,例如维生素K衍生物;以及一种在高产率下制备萘醌衍生物且不形成任何几何异构体的方法;以及作为制备萘醌衍生物的中间体有用的1,4,4.sub.a,5,8,9.sub.a-六氢-4.sub.a .alpha.-烯基-1.alpha.,4.alpha.-甲基蒽醌衍生物和1,4,4.sub.a,5,8,9.sub.a-六氢-1.alpha.,4.alpha.-甲基蒽醌衍生物。