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    • 5. 发明公开
    • METHOD FOR PREPARING 6-AMINOHEXYL LACTOSIDE-NOTA CONJUGATE
    • 制备6-氨基己酸半乳糖苷 - 诺他共轭物的方法
    • EP3184535A1
    • 2017-06-28
    • EP16180099.0
    • 2016-07-19
    • Institute of Nuclear Energy Research Atomic Engery Council, Executive Yuan, R.O.C.
    • CHEN, Rui-YuJIANG, Yan-FengWANG, Mei-HuiWANG, Jen-TsungLIN, Wuu-Jyh
    • C07H1/00C07H15/26A61K49/00
    • C07H15/26A61K49/0002C07H1/00
    • The present invention provides a method for preparing a 6-aminohexyl lactoside-NOTA conjugate. The preparation method comprises brominating perbenzoylated lactose with hydrobromic acid; glycosylating 6-azidohexanol to obtain 6-azidohexyl perbenzoyl lactoside; and deprotecting this precursor in two steps to obtain 6-aminohexyl lactoside and conjugating 6-aminohexyl lactoside to NCS-benzyl-NODA GA (i.e. 2,2'-(7-(1-carboxy-4-((4-isothiocyanate benzyl) amino)-4-oxobutyl)-1,4,7-triazonane-1,4-diyl) diacetic acid) in triethyl amine as an alkaline solvent, to obtain a 6-aminohexyl lactoside-NCS-benzyl-NODA GA conjugate. In this novel preparation method, no deglycosylated side product is produced, such that the yield is considerably increased to 46%. Therefore, the method is suitable for future massive production since the requirement for repeated preparations for massive production is reduced, and the impurities produced in the previously scaled-up preparation process are not present.
    • 本发明提供了制备6-氨基己基乳糖苷-NOTA缀合物的方法。 该制备方法包括用氢溴酸溴化过苯甲酰化乳糖, 将6-叠氮基己醇进行糖基化以获得6-叠氮基己基过苯甲酰基乳糖苷; (即2,2' - (7-(1-羧基-4 - ((4-异硫氰酸苯甲基)苄基)-NDA-甘氨酸(NCS-苄基-NODA GA)偶联6-氨基己基乳糖苷并将6-氨基己基乳糖苷偶联到NCS- 氨基)-4-氧代丁基)-1,4,7-三氮杂壬烷-1,4-二基)二乙酸)在碱性溶剂三乙胺中反应,得到6-氨基己基乳糖苷-NCS-苄基-NODA GA缀合物。 在这种新型制备方法中,不产生去糖基化的副产物,使得产率显着增加至46%。 因此,该方法适用于未来的大规模生产,因为减少了大量生产的重复准备的要求,并且不存在先前放大的制备过程中产生的杂质。