Sustained-release multi-granule tablet
    62.
    发明授权
    Sustained-release multi-granule tablet 失效
    持续释放多颗粒片剂

    公开(公告)号:US5624683A

    公开(公告)日:1997-04-29

    申请号:US192603

    申请日:1994-02-07

    摘要: A sustained-release multi-granule tablet is obtained by compressing sustained-release granules, which contains a basis, and a formulation adjuvant. Each of the granules has been coated in advance with a layer of the formulation adjuvant and/or a layer of a mixture of the formulation adjuvant and the basis. The tablet releases an active substance at a suitable velocity into the digestion tract, resulting in that the inbalance in the absorption of the drug in each patient and among individual patients is minimized to achieve maximum bioavailability.

    摘要翻译: 通过压缩含有基础的缓释颗粒和制剂佐剂获得缓释多颗粒片剂。 预先将各颗粒剂用制剂佐剂层和/或制剂佐剂和基质的混合物层进行包衣。 片剂以适当的速度将活性物质释放到消化道中,导致每个患者和个体患者中药物吸收的不平衡被最小化以达到最大生物利用度。

    Intermediates for substituted biphenylmethylmidazopyridine angiotensin
II antagonists
    66.
    发明授权
    Intermediates for substituted biphenylmethylmidazopyridine angiotensin II antagonists 失效
    取代联苯甲基咪唑并吡啶血管紧张素II拮抗剂的中间体

    公开(公告)号:US5559236A

    公开(公告)日:1996-09-24

    申请号:US471465

    申请日:1995-06-06

    摘要: The present invention provides an industrially advantageous process for preparing a 2-alkyl-3-(biphenyl-4-yl)methyl-3H-imidazo[4,5-b]pyridine derivative represented by the following formula (II) which is a precursor of an antagonist against an angiotensin II receptor useful as an antihypertensive drug, a biphenyl derivative which is a precursor of the substituent of the pyridine derivative, a process for the preparation thereof, and an intermediate useful for the preparation of the biphenyl derivative: ##STR1## The 2-alkyl-3-(biphenyl-4-yl)methyl-3H-imidazo-[4,5-b]pyridine derivative can be prepared in a high yield according to the present invention from a 2-amino-5-halogeno-3-nitropyridine derivative through amidation, N-alkylation and reductive cyclization. The halogen atom introduced at the 5-position as a protective group against nitration can be eliminated simultaneously in the step which is conducted thereafter. Thus, this process is industrially advantageous. Further, the biphenyl derivative of the present invention is excellent in reactivity and purity of the product, thus being an intermediate suitable for the industrial production.

    摘要翻译: 本发明提供了制备由下式(II)表示的2-烷基-3-(联苯-4-基)甲基-3H-咪唑并[4,5-b]吡啶衍生物的工业上有利的方法,其为前体 可用作抗高血压药物的血管紧张素II受体的拮抗剂,作为吡啶衍生物的取代基的前体的联苯衍生物,其制备方法和用于制备联苯衍生物的中间体:(II)2-烷基-3-(联苯-4-基)甲基-3H-咪唑并[4,5-b]吡啶衍生物可以按照本发明从2-氨基 -5-卤代-3-硝基吡啶衍生物通过酰胺化,N-烷基化和还原环化。 在其后进行的步骤中可以同时消除在5位引入作为硝化保护基的卤素原子。 因此,该方法在工业上是有利的。 此外,本发明的联苯衍生物的产物的反应性和纯度优异,因此是适于工业化生产的中间体。

    Condensed pyrimidine derivative
    67.
    发明授权
    Condensed pyrimidine derivative 失效
    缩合嘧啶衍生物

    公开(公告)号:US5554615A

    公开(公告)日:1996-09-10

    申请号:US300564

    申请日:1994-09-06

    CPC分类号: C07D487/04 C07D239/70

    摘要: A novel pyrimidine derivative having an excellent antitumor activity, which is represented by the following general formula (I) or a pharmacologically acceptable salt thereof: ##STR1## wherein R.sup.1 represents a hydroxyl or amino group; R.sup.2 represents a phenylene, pyridinediyl, thiendiyl, furandiyl or thiazoldiyl group, --CO.sub.2 R.sup.5 and --CO.sub.2 R.sup.6 may be the same or different from each other and each represents a carboxyl group or a carboxylic acid ester, the part ##STR2## A represents an oxygen atom, a group represented by the formula: ##STR3## (wherein R.sup.3 and R.sup.4 may be the same or different from each other and each represents a hydrogen or halogen atom or a hydrocarbon group which may be substituted, or alternatively R.sup.3 and R.sup.4 may be united to form an alkylidene group which may be substituted) or a group represented by the formula: ##STR4## (wherein R.sup.70 represents a hydrogen atom or a hydrocarbon group), and n is an integer of 1 to 3, provided that the compound in which R.sup.1 represents oxygen, and hydrogen is attached to nitrogen at 3-position is included in the above shown definition, a process for preparation the same, and an antitumor drug containing the same.

    摘要翻译: 一种具有优异抗肿瘤活性的新型嘧啶衍生物,其由下列通式(I)表示或其药理学上可接受的盐:其中R 1表示羟基或氨基; R2代表亚苯基,吡啶二基,噻二基,呋喃二基或噻二唑基,-CO 2 R 5和-CO 2 R 6可以相同或不同,各自表示羧基或羧酸酯,部分 氧原子,由下式表示的基团:彼此不同,各自表示氢或卤素原子或可被取代的烃基,或者R3和R4可以相互结合形成可被取代的亚烷基) 或由下式表示的基团:其中R 70表示氢原子或烃基,n为1〜3的整数,条件是其中R1表示氧,氮与氮连接的化合物 在上述定义中包括3-位,其制备方法和含有该定义的抗肿瘤药物。