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    • 7. 发明授权
    • Process for producing a polyoxyalkylene derivatives substituted with
succinimidyl group
    • 用琥珀酰亚胺基取代的聚氧化烯衍生物的制造方法
    • US5872191A
    • 1999-02-16
    • US867985
    • 1997-06-03
    • Kouzoh SanchikaTohru YasukohchiKei-ichi MaruyamaSyunsuke Ohhashi
    • Kouzoh SanchikaTohru YasukohchiKei-ichi MaruyamaSyunsuke Ohhashi
    • C07D207/46C08G65/32C08G65/329C08G65/332C08G65/333C08L71/02
    • C08G65/329C08G65/33337
    • A process for producing a polyoxyalkylene derivative substituted with succinimidyl group which comprises reacting a polyoxyalkylene compound having carboxyl group at ends with N-hydroxysuccinimide in an inert solvent in the presence of dicyclohexylcarbodiimide; dissolving an obtained reaction product into chloroform, an amount by weight of chloroform being 0.5 to 10 times as much as an amount by weight of the polyoxyalkylene compound having carboxyl group at ends; and crystallizing the polyoxyalkylene derivative substituted with succinimidyl group by adding an aliphatic hydrocarbon having 5 to 8 carbon atoms to a resultant solution, an amount by weight of the aliphatic hydrocarbon being 2 to 10 times as much as an amount by weight of chloroform. Materials can be handled with safety, and a highly pure polyoxyalkylene derivative substituted with succinimidyl group which does not cause turbidity in an aqueous solution and has an excellent quality as a material for drugs can be produced.
    • 一种制备被琥珀酰亚胺基取代的聚氧化烯衍生物的方法,包括在二环己基碳二亚胺的存在下,在惰性溶剂中使具有羧基的聚氧化烯化合物与N-羟基琥珀酰亚胺反应; 将得到的反应产物溶解在氯仿中,氯仿的重量为末端具有羧基的聚氧化烯化合物的重量的0.5〜10倍; 并通过向所得溶液中加入碳原子数为5〜8的脂肪族烃而使被琥珀酰亚胺基取代的聚氧化烯衍生物结晶化,所述脂肪族烃的重量比为氯仿的2〜10倍。 可以安全地处理材料,并且可以制备用琥珀酰亚胺基取代的高纯度聚氧化烯衍生物,其不会在水溶液中引起浊度并且具有作为药物的材料的优良品质。
    • 10. 发明授权
    • Phospholipid derivative
    • 磷脂衍生物
    • US07399877B2
    • 2008-07-15
    • US10549630
    • 2004-03-19
    • Chika ItohSyunsuke OhhashiKazuhiro KuboTohru YasukohchiHiroshi KikuchiNorio SuzukiMiho TakahashiHitoshi Yamauchi
    • Chika ItohSyunsuke OhhashiKazuhiro KuboTohru YasukohchiHiroshi KikuchiNorio SuzukiMiho TakahashiHitoshi Yamauchi
    • C07F9/02
    • A61K9/127C07F9/10C11D1/345
    • A phospholipid derivative represented by the following formula (I) wherein R1CO and R2CO independently represent an acyl group; R3 represents hydrogen atom, or a hydrocarbon group; symbol “a” represents an integer of 0 to 4; symbol “b” represents 0 or 1, provided that when a is 0, b is 0; X represents hydrogen atom, an alkali metal atom, an ammonium, or an organic ammonium; A1O and A3O represent an oxyalkylene group containing oxyethylene group, wherein the ratio of the oxyethylene group to the oxyalkylene group in A1O and A3O is 0.5 or larger in terms of a weight ratio; A2O represents an oxyalkylene group; symbols “m” and “q” represent an average molar number of added oxyalkylene groups; and symbol “n” represent an average molar number of added oxyalkylene groups; provided that m, n and q satisfy the following conditions: 5≦m≦600, 1≦n≦45, 0≦q≦200, 10≦m+n+q≦600, 0.04≦n/(m+n+q), and q/(m+n+q)≦0.8, which can thicken the water shell of liposome surface by suppressing the spreading of the polyalkylene oxide structure on the surface and thus increase stability of the liposome
    • 由下式(I)表示的磷脂衍生物,其中R 1 CO和R 2 CO独立地表示酰基; R 3表示氢原子或烃基; 符号“a”表示0〜4的整数, 符号“b”表示0或1,条件是当a为0时,b为0; X表示氢原子,碱金属原子,铵或有机铵; A 1 O和A 3 O表示含氧化乙烯基的氧化烯基,其中A 1 O 3中的氧乙烯基与氧化烯基的比例 O和A 3 O以重量比计为0.5以上; O 2表示氧化烯基; 符号“m”和“q”表示加成的氧化烯基团的平均摩尔数; 符号“n”表示加成的氧化烯基的平均摩尔数; 条件是m,n和q满足以下条件:5 <= m <= 600,1 <= n <= 45,0 <= q <= 200,10 <= m + n + q <= 600,0.04 < = n /(m + n + q)和q /(m + n + q)<= 0.8,这可以通过抑制聚环氧烷结构在表面上的扩散而增加脂质体表面的水壳,从而增加稳定性 的脂质体