会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明授权
    • Method for producing high-purity ceramide
    • 生产高纯度神经酰胺的方法
    • US09079826B2
    • 2015-07-14
    • US14366883
    • 2012-11-07
    • Takasago International Corporation
    • Kenya IshidaKenji Yagi
    • C07C231/02C07C231/22C07C233/18C07C231/24C07C235/08
    • 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),*表示 光学活性状态)。