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    • 7. 发明授权
    • Cephalosporin antibiotics and processes for preparation thereof
    • 头孢菌素类抗生素及其制备方法
    • US5605895A
    • 1997-02-25
    • US277629
    • 1994-07-20
    • Chan S. BangYong Z. KimJae H. YeoJong C. LimYoung M. WooHun S. OhDuk H. YangSam S. KimSe H. KimJae H. JeonTae H. LeeSung I. KimMi K. SeoJae W. Lee
    • Chan S. BangYong Z. KimJae H. YeoJong C. LimYoung M. WooHun S. OhDuk H. YangSam S. KimSe H. KimJae H. JeonTae H. LeeSung I. KimMi K. SeoJae W. Lee
    • A61K31/545A61K31/546A61P31/04C07D501/00C07D501/36
    • C07D501/00Y02P20/55
    • The present invention relates to a cephalosporin compound represented by the following general formula (I), its pharmaceutically acceptable non-toxic salt, physiologically hydrolyzable ester, hydrate or solvate, or isomers thereof, which is useful as an antibiotic agent: ##STR1## in which R.sup.1 represents hydrogen or an amino-protecting group,R.sup.2 and R.sup.3 can be identical or different and each represent hydrogen or a hydroxy-protecting group, orR.sup.2 and R.sup.3 together can form a diol-protecting cyclic group,R.sup.4 represents hydrogen or a carboxyl-protecting group,R.sup.5 represents hydrogen, C.sub.1-4 alkyl, alkoxycarbonyl, carboxyl or sulfomethyl,R.sup.6 represents hydrogen, amino or substituted amino, andR.sup.7 represents C.sub.1-4 alkyl, amino or substituted amino, orR.sup.5 and R.sup.6 together with the carbon atoms to which they are attached can form a 3 to 7-membered cyclic group, orR.sup.6 and R.sup.7 together with the carbon and nitrogen atoms to which they are attached can form a 3 to 7-membered heterocyclic ring which may optionally contain additional heteroatoms such as nitrogen and/or oxygen and which may be substituted with the substituents selected from C.sub.1-4 alkyl, amino and substituted amino, andQ represents CH or N.
    • 本发明涉及以下通式(I)表示的头孢菌素化合物,其药学上可接受的无毒盐,生理上可水解的酯,水合物或溶剂化物或其异构体,其可用作抗生素: I),其中R 1表示氢或氨基保护基,R 2和R 3可以相同或不同,各自表示氢或羟基保护基,或者R 2和R 3一起可以形成二醇保护的环状基团,R 4表示氢 或羧基保护基,R5表示氢,C1-4烷基,烷氧基羰基,羧基或磺基甲基,R6表示氢,氨基或取代的氨基,R7表示C1-4烷基,氨基或取代的氨基,或R5和R6连同 它们连接的碳原子可以形成3至7元环基,或者R6和R7与它们所连接的碳原子和氮原子一起可以形成3至7元杂环,其可以 任选地含有另外的杂原子如氮和/或氧并且可以被选自C 1-4烷基,氨基和取代的氨基的取代基取代,Q代表CH或N.
    • 10. 发明授权
    • Manufacture of oral dosage forms delivering both immediate-release and sustained-release drugs
    • 制备立即释放和持续释放药物的口服剂型
    • US06682759B2
    • 2004-01-27
    • US10066146
    • 2002-02-01
    • Jong C. LimJohn N. Shell
    • Jong C. LimJohn N. Shell
    • A61K922
    • A61K9/209A61K31/155A61K2300/00
    • A method is disclosed for manufacturing a pharmaceutical tablet for oral administration, the tablet combining both immediate-release and prolonged-release modes of drug delivery and using an immediate-release drug that is either insoluble in water or only sparingly soluble and is present in a very small amount compared to the prolonged-release drug. The method involves the use of particles of the immediate-release drug that are equal to or less than 10 microns in diameter, applied as a layer or coating over a core of the prolonged-release drug, the layer or coating being either the drug particles themselves, applied as an aqueous suspension, or a solid mixture containing the drug in admixture with a material that disintegrates rapidly in gastric fluid. The result in both cases is a high degree of uniformity in the proportions of the immediate-release and prolonged-release drugs, uniformity that is otherwise difficult to achieve in view of the insolubility of the immediate-release drug and its relatively small amount compared to the prolonged-released drug.
    • 公开了用于制造用于口服给药的药物片剂的方法,所述药片结合药物递送的立即释放和延长释放模式并且使用不溶于水或仅溶于微溶并且存在于 与延长释放药物相比非常少量。 该方法包括使用直径为等于或小于10微米的速释药物的颗粒,作为延长释放药物的核心上的层或涂层施用,该层或涂层是药物颗粒 或者含有药物的固体混合物与在胃液中快速分解的物质混合。 两种情况的结果是立即释放和延长释放药物的比例高度均匀,鉴于立即释放药物的不溶性而难以实现的均匀性,并且相对于 延长释放的药物。