申请人:Tokuda Harukuni
公开号:US20090042977A1
公开(公告)日:2009-02-12
The present invention provides a method for easily and inexpensively preparing a racemate or an optically-active 2-(1-hydroxyethyl)-5-hydroxynaphtho[2,3-b]furan-4,9-dione in high yields, 2-acetyl-2,3-dihydro-5-hydroxynaphtho[2,3-b]furan-4,9-dione which is useful as an intermediate for preparing NFD, and an anticancer agent comprising 2-(1-hydroxyethyl)-5-hydroxynaphtho[2,3-b]furan-4,9-dione as an active ingredient.
Said 2-(1-hydroxyethyl)-5-hydroxynaphtho[2,3-b]furan-4,9-dione is obtained in 4 or 5 steps by using comparatively inexpensive 5-hydroxynaphthalene-1,4-dione (also referred to as juglone) as a starting material.
本发明提供了一种简单、廉价的方法,以高收率制备拉氨酸盐或光学活性的2-(1-羟乙基)-5-羟基萘[2,3-b]呋喃-4,9-二酮,以及用于制备NFD的中间体2-乙酰基-2,3-二氢-5-羟基萘[2,3-b]呋喃-4,9-二酮和包含2-(1-羟乙基)-5-羟基萘[2,3-b]呋喃-4,9-二酮作为活性成分的抗癌剂。所述2-(1-羟乙基)-5-羟基萘[2,3-b]呋喃-4,9-二酮通过使用相对廉价的5-羟基萘醌(也称核桃醌)作为起始材料,在4或5个步骤中获得。