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    • 2. 发明申请
    • PREPARATION METHOD OF HIGH-OPTICAL PURITY N2-[1-(S)-ETHOXYCARBONYL-3-PHENYLPROPYL]-N6-TRIFLUOROACETYL-L-LYSINE
    • 高光固化N2- [1-(S) - 乙氧羰基-3-苯基丙基] -N6-三氟乙酰基-L-赖氨酸的制备方法
    • US20130178651A1
    • 2013-07-11
    • US13822690
    • 2010-09-29
    • Limin QueYueheng JiangZhigang LinTong Cai
    • Limin QueYueheng JiangZhigang LinTong Cai
    • C07C51/42
    • C07C51/42C07B2200/07C07C231/20C07C233/47
    • Disclosed is a preparation method of high-optical purity N2-[1-(S)-ethoxycarbonyl-3-phenylpropyl]-N6-trifluoroacetyl-L-lysine. The method includes: adding crude N2-[1-(S)-ethoxycarbonyl-3-phenylpropyl]-N6-trifluoroacetyl-L-lysine to one or more organic solvents, and then reacting with an organic acid to form a salt, which is precipitated, thereby achieving the purpose of separation and purification; next, adding the obtained solid or mother concentrate into deionized water, and then adding an inorganic base or an organic base for basification, so as to adjust the pH value, removing the organic acid, filtering, washing and drying, to obtain the high-optical purity N2-[1-(S)-ethoxycarbonyl-3-phenylpropyl]-N6-trifluoroacetyl-L-lysine, where the molar ratio of 1S-isomer to 1R-isomer is equal to or greater than 99:1.
    • 公开了高光学纯度N2- [1-(S) - 乙氧基羰基-3-苯基丙基] -N6-三氟乙酰基-L-赖氨酸的制备方法。 该方法包括:向一种或多种有机溶剂中加入粗N2- [1-(S) - 乙氧基羰基-3-苯基丙基] -N6-三氟乙酰基-L-赖氨酸,然后与有机酸反应形成盐, 沉淀,从而达到分离纯化的目的; 然后,将得到的固体或母体浓缩物加入去离子水中,然后加入无机碱或有机碱进行碱化,调节pH值,除去有机酸,过滤,洗涤和干燥, 光学纯度N2- [1-(S) - 乙氧基羰基-3-苯基丙基] -N6-三氟乙酰基-L-赖氨酸,其中1S-异构体与1R-异构体的摩尔比等于或大于99:1。
    • 7. 发明授权
    • Method of resolving optical isomers of amino acid derivative
    • 拆分氨基酸衍生物的光学异构体的方法
    • US07199264B2
    • 2007-04-03
    • US10415559
    • 2001-10-25
    • Shin WatanabeMizue Kawahara
    • Shin WatanabeMizue Kawahara
    • C07B55/00
    • C07C269/08C07B2200/07C07C231/20C07C319/28C07D207/16C07C233/83C07C271/22C07C323/58C07C323/59
    • Provided is a separating method for an optical isomer mixture comprising the steps of mixing an amino acid derivative such as N-(tert-butoxycarbonyl)-DL-alanine in which optical isomers of a D type and an L type are present in a mixture with a hydrophilic compound such as β-cyclodextrin having a different affinity to two kinds of the optical isomers described above and then bringing the resulting aqueous solution or aqueous suspension into contact with a hydrophobic substance such as a solid matter subjected on a surface thereof to hydrophobic treatment on the condition that the pH is 3.5 or lower or under the coexistence of ions including an atomic group having hydrophobicity which can be a counter ion for the amino acid derivative described above such as a triethylammonium ion to thereby separate the D type amino acid derivative from the L type amino acid derivative present in the above aqueous solution or aqueous suspension.
    • 本发明提供了一种旋光异构体混合物的分离方法,包括将混合物中存在D型和L型光学异构体的氨基酸衍生物如N-(叔丁氧羰基)-DL-丙氨酸混合物混合物 对上述两种旋光异构体具有不同亲和性的亲水性化合物如β-环糊精,然后将所得水溶液或水悬浮液与其表面经受的固体物质等疏水性物质接触,进行疏水处理 在pH为3.5以下或者含有具有疏水性的原子团的离子共存的情况下,其可以是上述氨基酸衍生物的反离子,例如三乙基铵离子,从而将D型氨基酸衍生物从 存在于上述水溶液或水性悬浮液中的L型氨基酸衍生物。