METHODS FOR SELECTIVE OXIDATION OF ALPHA TOCOTRIENOL IN THE PRESENCE OF NON-ALPHA TOCOTRIENOLS

    公开(公告)号:US20170297991A1

    公开(公告)日:2017-10-19

    申请号:US15411861

    申请日:2017-01-20

    发明人: Paul Mollard

    IPC分类号: C07C46/06 C07C2601/16

    摘要: A method of producing alpha-tocotrienol quinone or a stereoisomer thereof, the method comprising selective opening of alpha-tocotrienol chroman to alpha-tocotrienol quinone in the presence of non-alpha tocotrienol chromans by oxidizing alpha-tocotrienol with a metal salt oxidizing agent, wherein the stoichiometric ratio of metal salt oxidizing agent/alpha-tocotrienol is at least 4:1 and wherein said metal oxidizing agent is added in sequential additions, in order to reduce oxidation of any amounts of non-alpha tocotrienol chromans that might have been present in the starting alpha-tocotrienol chroman material. This process uses conditions favoring oxidation rates of the alpha tocotrienol chroman vs. the non-alpha tocotrienol chromans.

    METHOD FOR PRODUCING ASTAXANTHIN ESTERS
    7.
    发明申请

    公开(公告)号:US20170305849A1

    公开(公告)日:2017-10-26

    申请号:US15509905

    申请日:2015-08-11

    申请人: BASF SE

    IPC分类号: C07C403/24 C07C2601/16

    CPC分类号: C07C403/24 C07C2601/16

    摘要: 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. For this purpose, compound 2 and 3 are reacted in an organic solvent in the presence of a nitrogen-containing base of the general formula 4. The invention further relates to the non-therapeutic use of the diester 1, in which R is a residue selected from the group consisting of C13-C19-alkyl, C13-C19-alkenyl, C13-C19-alkdienyl and C13-C19-alktrienyl, in human or animal nutrition and also the therapeutic use of the diester 1 prepared according to the method as a medicament and also as an ingredient in a medicinal preparation.