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    • 3. 发明申请
    • METHODS FOR PRODUCING PHENYLALANINE DERIVATIVES HAVING A QUINAZOLINEDIONE SKELETON AND INTERMEDIATES FOR PRODUCTION THEREOF
    • 用于生产具有四氮唑烷酮的苯乙烯胺衍生物的方法及其生产中间体
    • US20100204505A1
    • 2010-08-12
    • US12766178
    • 2010-04-23
    • Noriyasu KataokaAkinori TataraMasanobu YatagaiJunko Yamanaka
    • Noriyasu KataokaAkinori TataraMasanobu YatagaiJunko Yamanaka
    • C07C229/52
    • C07D239/96C07C233/87
    • The present invention provides a method for producing a phenylalanine derivative(s) having a quinazolinedione ring of formula (5), including steps comprising of reacting an acylphenylalanine derivative(s) of formula (1) with a carbonyl group-introducing reagent(s) and a derivative(s) of anthranilic acid to form an asymmetric urea intermediate(s); making the asymmetric urea intermediate(s) into a quinazolinedione compound(s) of formula (4) in the presence of a base(s); and N-alkylating quinazolinedione ring amide of the obtained quinazolinedione compounds with N-alkylation agents. This production method is an industrially applicable method for producing phenylalanine derivatives having a quinazolinedione skeleton, which are compounds highly useful as drugs having α 4 integrin inhibiting activity. In the formulae (1) and (5), R1 represents a phenyl group having a substituent(s) and the like, R2 represents an alkyl group and the like, R3 represents a dialkylamino group and the like, and R4 represents an alkyl group and the like.
    • 本发明提供了具有式(5)喹唑啉二酮环的苯丙氨酸衍生物的制备方法,包括使式(1)的酰基苯丙氨酸衍生物与羰基引入试剂反应的步骤, 和邻氨基苯甲酸的衍生物以形成不对称脲中间体; 在碱的存在下使不对称脲中间体转化为式(4)的喹唑啉二酮化合物; 和得到的喹唑啉二酮化合物的N-烷基化喹唑啉二酮环酰胺与N-烷基化剂。 该制造方法是用于生产具有喹唑啉二酮骨架的苯丙氨酸衍生物的工业上适用的方法,其是作为具有α4整联蛋白抑制活性的药物高度有用的化合物。 在式(1)和(5)中,R 1表示具有取代基等的苯基,R 2表示烷基等,R 3表示二烷基氨基等,R 4表示烷基 等等。
    • 6. 发明申请
    • Production method of optically active diphenylalanine compounds
    • 光学活性二苯丙氨酸化合物的制备方法
    • US20060270869A1
    • 2006-11-30
    • US11430909
    • 2006-05-10
    • Takayuki HamadaMasanobu Yatagai
    • Takayuki HamadaMasanobu Yatagai
    • C07C237/20
    • C07C227/20C07C231/12C07C229/36C07C233/47C07C233/51
    • The present invention provides a production method including reacting a diphenylmethylene halide compound represented by the following formula (1) with a malonic acid diester compound represented by the following formula (2) in an organic solvent selected from N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone and N,N-dimethylformamide, in the presence of a base selected from an alkali metal hydride and an alkali metal t-butoxide to give a diester compound represented by the following formula (3), and then subjecting the diester compound to hydrolysis and decarboxylation to give a diphenylalanine compound represented by the following formula (4). According to the present invention, diphenylalanine compound (4) can be obtained industrially advantageously in a high yield. wherein each symbol is as defined in the specification.
    • 本发明提供一种制造方法,其特征在于,使下述式(1)表示的二苯基亚甲基卤化物与下述式(2)所示的丙二酸二酯化合物在选自N-甲基-2-吡咯烷酮,N - 乙基-2-吡咯烷酮和N,N-二甲基甲酰胺,在选自碱金属氢化物和碱金属叔丁醇盐的碱存在下,得到下式(3)表示的二酯化合物,然后 二酯化合物进行水解和脱羧,得到由下式(4)表示的二苯丙氨酸化合物。 根据本发明,可以在工业上有利地以高产率获得二苯丙氨酸化合物(4)。 其中每个符号如说明书中所定义。
    • 8. 发明申请
    • Process for producing optically active carboxylic acid
    • 光学活性羧酸的制备方法
    • US20050065368A1
    • 2005-03-24
    • US10934724
    • 2004-09-07
    • Masanobu YatagaiMasafumi MinomuraShigekatsu Tsuchiya
    • Masanobu YatagaiMasafumi MinomuraShigekatsu Tsuchiya
    • C07C51/41C07C51/43C07C51/487C07C61/04
    • C07C51/43C07B2200/07C07C51/412C07C51/487C07C2601/02C07C61/04
    • The invention provides a process for producing optically active 2,2-dimethylcyclopropanecarboxylic acid by reacting an optical isomer mixture of 2,2-dimethylcyclopropanecarboxylic acid with an optically inactive amine to form (precipitate, crystallize or the like) an ammonium salt of optically active 2,2-dimethylcyclopropanecarboxylic acid, for example, optically active (S)-(+)-2,2-dimethylcyclopropanecarboxylic acid. The production (optical resolution, separation of an optically active substance, purification of an optically active substance or the like) of optically active 2,2-dimethylcyclopropanecarboxylic acid which is important as an intermediate for production of agricultural chemicals, medications and the like can easily be conducted at low cost. Further, the invention provides an intermediate therefor (an ammonium salt of optically active 2,2-dimethylcyclopropanecarboxylic acid, especially preferably an ammonium salt of optically active (S)-(+)-2,2-dimethylcyclopropanecarboxylic acid, or the like), and an optical resolution agent (optically inactive amine) for separation of optically active 2,2-dimethylcyclopropanecarboxylic acid.
    • 本发明提供一种通过使2,2-二甲基环丙烷羧酸的光学异构体混合物与光学活性胺反应形成(沉淀,结晶等)光学活性2的铵盐的光学活性2,2-二甲基环丙烷羧酸的方法 ,2-二甲基环丙烷羧酸,例如光学活性(S) - (+) - 2,2-二甲基环丙烷甲酸。 作为农药,药物等的生产中间体重要的光学活性2,2-二甲基环丙烷羧酸的制造(光学拆分,光学活性物质的分离,光学活性物质的纯化等)容易 以低成本进行。 此外,本发明提供了其中间体(光学活性2,2-二甲基环丙烷羧酸的铵盐,特别优选光学活性(S) - (+) - 2,2-二甲基环丙烷甲酸等的铵盐), 和用于分离光学活性的2,2-二甲基环丙烷羧酸的光学拆分剂(光学惰性胺)。