Disclosed herein are a naphthoquinone derivative represented by the following formula:
wherein R¹ means a hydrogen atom or methyl group, R² 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 1,4,4a,5,8,9a-hexahydro-4aα-alkenyl-1α,4α-methanoanthraquinone derivatives and 1,4,4a,5,8,9a-hexahydro-1α,4α-methanoanthraquinone derivatives which are useful as intermediates for the preparation of the naphthoquinone derivatives.
本文公开了一种由下式表示的
萘醌衍
生物:
其中R¹指氢原子或甲基,R²是氢原子或甲基,n代表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,连接可与
维生素K衍
生物等相同或有选择地彼此不同;高产率生产
萘醌衍
生物而不形成任何几何异构体的工艺;以及 1,4,4a,5,8,9a-六氢-4aα-烯基-1α,4α-甲桥
蒽醌衍
生物和 1,4,4a,5,8,9a-六氢-1α,4α-甲桥
蒽醌衍
生物,这些衍
生物可用作制备
萘醌衍
生物的中间体。