Xanthine derivatives
    8.
    发明授权
    Xanthine derivatives 失效
    黄嘌呤衍生物

    公开(公告)号:US5290782A

    公开(公告)日:1994-03-01

    申请号:US839690

    申请日:1992-02-24

    摘要: Novel xanthine compounds represented by the following formula: ##STR1## wherein each of X.sup.1 and X.sup.2 independently represents oxygen or sulfur; and Q represents; ##STR2## where ----- represents a single bond or a double bond; Y represents a single bond or alkylene, n represents 0 or 1, each of W.sup.1 and W.sup.2 independently represents hydrogen, lower alkyl or amino, Z represents --CH.sub.2 -, --O--, --S-- or --NH--; represents ##STR3## each of R.sup.1 and R.sup.2 independently represents hydrogen, lower alkyl, allyl or propargyl; and R.sup.3 represents hydrogen or lower alkyl, and when Q represents the groups other than ##STR4## each of R.sup.1, R.sup.2 and R.sup.3 independently represents hydrogen or lower alkyl;provided that when Q is ##STR5## then R.sup.1 R.sup.2 and R.sup.3 are notsimultaneously methyl; and pharmaceutically acceptable salts thereof have a diuretic effect, a renal-protecting effect and a bronchodilatory effect.

    摘要翻译: 由下式表示的新型黄嘌呤化合物:其中X1和X2各自独立地表示氧或硫; 和Q表示; 其中-----表示单键或双键; Y表示单键或亚烷基,n表示0或1,W1和W2各自独立地表示氢,低级烷基或氨基,Z表示-CH2 - , - O - , - S-或-NH-。 R1和R2各自表示氢,低级烷基,烯丙基或炔丙基; 且R 3表示氢或低级烷基,并且当Q表示除R1之外的基团时,R 1,R 2和R 3各自独立地表示氢或低级烷基; 条件是当Q为时,则R1 + L,R2和R3不同时为甲基; 及其药学上可接受的盐具有利尿作用,肾脏保护作用和支气管扩张作用。

    Phospholipid derivative
    10.
    发明授权
    Phospholipid derivative 有权
    磷脂衍生物

    公开(公告)号:US07531604B2

    公开(公告)日:2009-05-12

    申请号:US10529692

    申请日:2003-09-30

    摘要: A phospholipid derivative, utilizable for modification of liposomes and the like, which is a copolymer containing, as essential component units, a component unit A represented by the formula (1), a component unit B represented by the formula (2A) and/or the formula (2B), and a component unit C represented by the formula (3) [R1 and R2 represent hydrogen atom or methyl group, provided that R1 and R2 do not simultaneously represent methyl group; R3 represents a divalent hydrocarbon group having 1 to 3 carbon atoms; AO represents an oxyalkylene group having 2 to 4 carbon atoms; m represents an average molar number of the added oxyalkylene groups and is a number in the range represented as 4≦m≦100; R4 represents hydrogen atom, a hydrocarbon group or acyl group having 1 to 20 carbon atoms; R5CO and R6CO represent an acyl group having 8 to 24 carbon atoms; R7 represents a divalent hydrocarbon group having 2 to 4 carbon atoms; and X and Y represent hydrogen atom, an alkali metal atom, ammonium or an organic ammonium] wherein a molar ratio of the component unit A relative to a total of the component unit B and the component unit C is from 7/3 to 3/7, and the component unit C is contained at a ratio of from 1 to 4 moles per 1 mole of the copolymer.

    摘要翻译: 可用于脂质体改性的磷脂衍生物等,其是以式(1)表示的成分单元A,式(2A)表示的成分单元B和/或式 式(2B)和式(3)表示的成分单元C [R1和R2表示氢原子或甲基,条件是R1和R2不同时表示甲基; R3表示碳原子数为1〜3的二价烃基; AO表示碳原子数2〜4的氧化烯基, m表示加成的氧化烯基的平均摩尔数,为4≤m≤100的范围内的数; R4表示氢原子,碳原子数为1〜20的烃基或酰基, R5CO和R6CO表示碳原子数为8〜24的酰基, R 7表示碳原子数为2〜4的二价烃基; 并且X和Y表示氢原子,碱金属原子,铵或有机铵],其中组分单元A相对于组分单元B和组分单元C的总量的摩尔比为7/3至3 / 7,组分单元C的含量相对于1摩尔共聚物为1〜4摩尔。