The invention describes an environmentally friendly, sustainable and cost-effective method for preparing astaxanthin diesters of the formula 1, in which astaxanthin of the formula 2 is doubly esterified with fatty acid chlorides of the general formula 3.
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Paragraph 0091; 0092
(2017/11/14)
Synthesis of optically active natural carotenoids and structurally related compounds. II. Synthesis of (3S,3'S)-astaxanthin
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Kienzle,Mayer
p. 2609 - 2615
(2007/10/15)
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