HYDROXYCARBONYL DERIVATIVES AND PROCESS FOR MAKING THE SAME

The present invention relates to a process for the prepara- tion of astaxanthin having the formula comprising the step of oxidizing a dienolether, a dien- amine, or a dienolate anion of canthaxanthin with an oxazi- ridine oxidant to produce an astaxanthin dihemiaminal, and then decomposing the dihem...

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Bibliographische Detailangaben
1. Verfasser:	MOLDT, PETER
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY FOODS OR FOODSTUFFS FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J HUMAN NECESSITIES METALLURGY ORGANIC CHEMISTRY PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Beschreibung
Zusammenfassung:	The present invention relates to a process for the prepara- tion of astaxanthin having the formula comprising the step of oxidizing a dienolether, a dien- amine, or a dienolate anion of canthaxanthin with an oxazi- ridine oxidant to produce an astaxanthin dihemiaminal, and then decomposing the dihemiaminal to produce astaxanthin. The process advantageously involves two less steps than the best known prior art process for the preparation of asta- xanthin. The invention also relates to important intermediates in the preparation of astaxanthin, which is itself an im- portant additive in the fish industry, the most important of which intermediates is the astaxanthin dihemiaminal.