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    • 9. 发明授权
    • Process for preparing 2-acylglycerides or 1,2 or 2,3-diacylglycerides
    • 制备2-乙酰胆碱酯酶或1,2或2,3-二乙酰胆碱酯酶的方法
    • US5149642A
    • 1992-09-22
    • US511674
    • 1990-04-20
    • Adam W. MazurGeorge D. Hiler, IIMagda El-Nokaly
    • Adam W. MazurGeorge D. Hiler, IIMagda El-Nokaly
    • C07C69/003C11C3/08C12P7/64
    • C12P7/6418C07C69/003C11C3/08C12P7/6445C12P7/6454
    • A process for the selective hydrolysis of triglycerides to mixtures of 1,3 or 2,3-diacyl glycerides and 2-acyl glycerides is disclosed. This process uses an alkyl alcohol selected from the group consisting of 2-methyl-2-propanol, 2-butanol and the primary, secondary or tertiary branched or straight chain alkyl alcohols having from 5 to 8 carbon atoms, and mixtures thereof, an aqueous buffer system and a 1,3-lipase. The 2-acyl glycerides in the mixture are esterified to make stereospecific 1,2-diacyl glycerides or 2,3-diacyl glycerides with acid anhydrides and a lipase catalyst. Under the reaction conditions, there is little rearrangement of the diacyl glycerides in the mixture and less than 20% triglyceride is formed. Stereospecific 1,2,4-triglycerides can be made from these materials by standard esterification reactions under conditions which control rearrangement.
    • 公开了将甘油三酯选择性水解成1,3或2,3-二酰基甘油酯和2-酰基甘油酯的混合物的方法。 该方法使用选自2-甲基-2-丙醇,2-丁醇和具有5至8个碳原子的伯,仲或叔支链或直链烷基醇的烷基醇及其混合物,水溶液 缓冲系统和1,3-脂肪酶。 将混合物中的2-酰基甘油酯酯化以制备具有酸酐和脂肪酶催化剂的立体特异性1,2-二酰基甘油酯或2,3-二酰基甘油酯。 在反应条件下,混合物中二酰基甘油酯的重排很少,形成少于20%的甘油三酯。 在控制重排的条件下,可通过标准酯化反应从这些物质制备立体特异性的1,2,4-甘油三酸酯。