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7 条记录 (耗时 0.029 秒)

    Process for the preparation of isoflavones
    1.
    发明授权
    Process for the preparation of isoflavones 有权
    异黄酮制备方法

    公开(公告)号：US07109358B2

    公开(公告)日：2006-09-19

    申请号：US10474418

    申请日：2002-04-19

    申请人： David Carl Burdick

    发明人： David Carl Burdick

    IPC分类号： C07D311/36

    CPC分类号： C07D311/36

    摘要： The invention relates to a process for the preparation of 2H-isoflavones which process comprises the reaction of a 2-hydroxyaryl alkyl ketone in the presence of a base with a formic-sulfuric anhydride salt which reaction is followed by neutralization. The procedure is especially suitable for the preparation of genistein.

    摘要翻译： 本发明涉及一种制备2H-异黄酮的方法，该方法包括使2-羟基芳基烷基酮在碱的存在下与甲酸 - 硫酸酐盐的反应，该反应随后进行中和。 该方法特别适用于染料木素的制备。

    Process for concentrating epigallocatechin gallate
    3.
    发明授权
    Process for concentrating epigallocatechin gallate 有权
    浓缩表没食子儿茶素没食子酸酯的方法

    公开(公告)号：US06383392B1

    公开(公告)日：2002-05-07

    申请号：US09709123

    申请日：2000-11-08

    申请人： Werner Bonrath ,  David Carl Burdick ,  Peter Schirg ,  Andreas Thum

    发明人： Werner Bonrath ,  David Carl Burdick ,  Peter Schirg ,  Andreas Thum

    IPC分类号： B01D6100

    CPC分类号： C07D311/62

    摘要： The present invention is a process for concentrating aqueous epigallocatechin gallate (EGCG) solutions by feeding an aqueous EGCG solution to at least one membrane module under pressure to provide a permeate purge and a retentate return so that in the latter the concentration of EGCG is increased. The permeate purge and the retentate return are then collected.

    摘要翻译： 本发明是一种通过在压力下将EGCG水溶液加入至少一个膜组件来浓缩表没食子儿茶素没食子酸酯水溶液（EGCG）溶液的方法，以提供渗透物清除和滞留物返回，使得在后者中EGCG的浓度增加。 然后收集渗透物吹扫和滞留物返回。

    Manufacture of cycloalkenylpolyene esters
    4.
    发明授权
    Manufacture of cycloalkenylpolyene esters 失效
    环烯基聚酯的制造

    公开(公告)号：US06215009B1

    公开(公告)日：2001-04-10

    申请号：US09484905

    申请日：2000-01-18

    申请人： Stefan Bischof ,  David Carl Burdick ,  Bernard Orsat

    发明人： Stefan Bischof ,  David Carl Burdick ,  Bernard Orsat

    IPC分类号： C07C5100

    CPC分类号： C07C403/12 ,  C07C2601/16

    摘要： The invention provides a process for the manufacture of a retinyl acylate of the formula I: wherein R1 is an optionally substituted C1-23-alkyl, a C2-23-alkenyl having 1 to 5 double bonds, an optionally aromatically substituted phenyl-C1-6-alkyl, or an optionally substituted phenyl. This process includes treating a compound of formula II: wherein R1 is defined above and R2 is hydrogen or COR1, with an agent that is an acid anhydride or a complex of sulfur trioxide in the presence of dimethylformamide. In addition to dimethylformamide, an aprotic organic solvent may optionally be present in the reaction. The products of the present invention are useful as intermediates for the manufacture of compounds of the vitamin A group or in certain cases as the compounds themselves.

    摘要翻译： 本发明提供了制备式I的视黄酯酰化物的方法：其中R1是任选取代的C1-23-烷基，具有1至5个双键的C2-23-烯基，任选芳族取代的苯基-C1- 6-烷基或任选取代的苯基。 该方法包括在二甲基甲酰胺的存在下，使用作为酸酐或三氧化硫络合物的试剂处理式II化合物：其中R 1如上定义且R 2为氢或COR 1。 除了二甲基甲酰胺之外，非质子有机溶剂可以任选地存在于反应中。 本发明的产品可用作制造维生素A组的化合物或在某些情况下作为化合物本身的中间体。

    Manufacture of α-tocopherol
    5.
    发明授权
    Manufacture of α-tocopherol 有权
    α-生育酚的制造

    公开(公告)号：US07626046B2

    公开(公告)日：2009-12-01

    申请号：US10494005

    申请日：2002-10-23

    申请人： Werner Bonrath ,  David Carl Burdick ,  Frank Schager ,  Dominik Thomas ,  Thomas Netscher

    发明人： Werner Bonrath ,  David Carl Burdick ,  Frank Schager ,  Dominik Thomas ,  Thomas Netscher

    IPC分类号： C07D311/72

    CPC分类号： C07D311/72

    摘要： A process for the manufacture of (all-rac)-α-tocopherol comprises submitting isolated, purified phytyltrimethylhydroquinone to acid catalysis, thereby promoting ring closure to (all-rac)-α-t-tocopherol. The process can be conducted in the absence or presence of an added solvent, and when a solvent or solvent mixture is used the solvent or at least one solvent component of the solvent mixture is preferably one with a dipole moment greater than 9×10−30 C-m (or 2.7D). The nature of the catalyst is immaterial, but the catalyst is preferably sulphuric acid, phosphoric acid, a polyperfluoroalkylenesulphonic acid, a “NH-acid”, a heteropoly acid, zinc chloride, boron trifluoride, aluminium trichloride, or a mixture of any f the aforementioned Brönsted acids with any of the aforementioned Lewis acids. The product of the process is the most active an industrially most important member of the vitamin E group.

    摘要翻译： 制备（全消旋）-α-生育酚的方法包括将分离的纯化的植酰三甲基氢醌提交到酸催化，从而促进闭环（全 - 外）-α-生育酚。 该方法可以在不存在或存在添加的溶剂的情况下进行，并且当使用溶剂或溶剂混合物时，溶剂或溶剂混合物的至少一种溶剂组分优选为偶极矩大于9×10-30 Cm（ 或2.7D）。 催化剂的性质是不重要的，但是催化剂优选为硫酸，磷酸，多氟亚烷基磺酸，“NH-酸”，杂多酸，氯化锌，三氟化硼，三氯化铝，或任何f 上述布朗斯台德酸与任何上述路易斯酸。 该过程的产物是维生素E组中工业上最重要的成员中最活跃的产物。