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    • 211. 发明申请
    • METHOD FOR PRODUCING HIGH-PURITY CERAMIDE
    • 生产高纯度CERAMIDE的方法
    • US20140364649A1
    • 2014-12-11
    • US14366883
    • 2012-11-07
    • Takasago International Corporation
    • Kenya IshidaKenji Yagi
    • C07C231/02C07C235/08C07C231/24
    • C07C231/02C07B2200/07C07C231/22C07C231/24C07C233/18C07C235/08
    • Provided is a method for producing an optically active ceramide by an N-acylation (amidation) reaction of an optically active aminodiol, wherein a crude ceramide produced therein is purified by an industrially advantageous process. Namely, provided is a method for producing a high-purity ceramide that has high diastereo purity with high yield. A high-purity ceramide is produced by: a step wherein a ceramide represented by general formula (1) is produced by reacting an aminodiol with an alkyl ester having 1-5 carbon atoms of an aliphatic carboxylic acid having 12-24 carbon atoms, said aliphatic carboxylic acid optionally having a hydroxyl group, in a hydrocarbon solvent having 5-10 carbon atoms; and a step wherein an alcohol having 1-3 carbon atoms is added into the reaction mixture obtained in the preceding step, thereby causing crystals to precipitate. (In the formula, R1 represents an alkyl group which has 13-17 carbon atoms and optionally has a carbon-carbon unsaturated bond; R2 represents an alkyl group which has 11-23 carbon atoms and optionally has a hydroxyl group; and represents an optically active state.)
    • 提供了通过光学活性氨基二醇的N-酰化(酰胺化)反应制备光学活性神经酰胺的方法,其中通过工业上有利的方法纯化其中产生的粗制神经酰胺。 即,提供高纯度的高纯度神经酰胺的制造方法。 高纯度神经酰胺是通过以下步骤生产的:其中由通式(1)表示的神经酰胺通过氨基二醇与具有12-24个碳原子的脂族羧酸的具有1-5个碳原子的烷基酯反应来制备,所述 任选具有羟基的脂族羧酸,在具有5-10个碳原子的烃溶剂中; 并将其中将具有1-3个碳原子的醇加入到前述步骤中获得的反应混合物中,从而使晶体沉淀。 (式中,R 1表示碳原子数为13〜17的烷基,可以具有碳 - 碳不饱和键; R 2表示碳原子数为11〜23的烷基,可以具有羟基, 活跃状态)
    • 214. 发明授权
    • Method for reducing halogenobenzoic acid ester using ruthenium carbonyl complex
    • 使用钌羰基络合物还原卤代苯甲酸酯的方法
    • US08846983B2
    • 2014-09-30
    • US14100163
    • 2013-12-09
    • Takasago International Corporation
    • Kiyoto HoriOsamu OgataWataru Kuriyama
    • C07C29/149C07C51/60
    • C07C51/60C07C29/149C07C33/46
    • An object of the present invention is to provide a method for reducing a halogenobenzoic acid ester, in which dehalogenation is inhibited, by using a readily available catalyst. The method comprises reducing an ester with hydrogen gas by using an aromatic hydrocarbon as a solvent in the presence of a ruthenium complex represented by the following general formula (1): RuXY(CO)(L)  (1) where X and Y represent monovalent anionic ligands, and L represents a tridentate aminodiphosphine ligand represented by the following general formula (2): where RZ1 represents an alkyl group having 1 to 4 carbon atoms, each RZ2 represents an alkyl group having 1 to 4 carbon atoms or a halogen atom, any adjacent two RZ2s may form a ring, Hal represents a halogen atom, and n represents 0 to 4.
    • 本发明的目的是提供一种通过使用容易获得的催化剂来还原其中脱卤被抑制的卤代苯甲酸酯的方法。 该方法包括在由以下通式(1)表示的钌络合物存在下,通过使用芳族烃作为溶剂,用氢气还原酯:RuXY(CO)(L)(1)其中X和Y表示一价 阴离子配位体,L表示由以下通式(2)表示的三齿氨基二膦配体:其中RZ1表示碳原子数1〜4的烷基,各RZ2表示碳原子数为1〜4的烷基或卤素原子, 任何相邻的两个RZ2可以形成环,Hal表示卤素原子,n表示0至4。