C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 403/24 (2006.01)
Patent
CA 2417252
Disclosed are processes for conversion of (3R,3'R,6'R)-lutein to (3R,6'R)- .alpha.-cryptoxanthin,(3R)-.beta.-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)-.alpha.-cryptoxanthin in excellent yields.
L'invention concerne des méthodes de conversion de la (3R,3'R,6'R)-lutéine en (3R,6'R)-alpha-cryptoxanthine, (3R)-beta-cryptoxanthine, anhydrolutéines I, II et III (produits de déshydratation de la lutéine), et une méthode de séparation et de purification de caroténoïdes individuels comprenant la (3R,3'R)-zeaxanthine intacte. L'invention concerne en outre deux méthodes qui permettent de transformer la (3R,3'R,6'R)-lutéine en (3R,6'R)-alpha-cryptoxanthine avec d'excellents rendements.
Gowling Lafleur Henderson Llp
University Of Maryland College Park
LandOfFree
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