申请人:——
公开号:US20030220525A1
公开(公告)日:2003-11-27
Disclosed are processes for conversion of (3R,3′R,6′R)-lutein to (3R,6′R)-&agr;-cryptoxanthin, (3R)-&bgr;-cryptoxanthin, anhydroluteins I, II, and III (dehydration products of lutein), and a method for separating and purifying the individual carotenoids including the unreacted (3R,3′R)-zeaxanthin. The invention also includes two methods that transform (3R,3′R,6′R)-lutein into (3R,6′R)-&agr;-cryptoxanthin in excellent yields.
披露了将(3R,3′R,6′R)-叶黄素转化为(3R,6′R)-α-隐花黄素、(3R)-β-隐花黄素、无水叶黄素I、II和III(叶黄素的脱水产物)的过程,以及一种分离和纯化单个类胡萝卜素的方法,包括未反应的(3R,3′R)-玉米黄质。该发明还包括两种将(3R,3′R,6′R)-叶黄素转化为(3R,6′R)-α-隐花黄素的方法,产率非常高。