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    • 5. 发明申请
    • 3-HYDRAZINO-2,5-DIOXOPYRROLIDINE-3-CARBOXYLATE, PROCESS FOR PRODUCTION OF THE SAME, AND USE OF THE SAME
    • 3-氢化-2,5-二氧代吡咯烷-3-羧酸乙酯,其制备方法及其用途
    • US20110201807A1
    • 2011-08-18
    • US13093202
    • 2011-04-25
    • Daisuke TANAKA
    • Daisuke TANAKA
    • C07D487/20C07D207/416
    • C07D207/416
    • The present invention provides 3-hydrazino-2,5-dioxopyrrolidine-3-carboxylates of the formula (I): wherein R1 is a C1-6 alkyl group, etc., R2 is a hydrogen atom or a COOR3 group, wherein R3 is a tert-C4-6 alkyl group, a 2,2,2-trichloroethyl group or a benzyl group in which the benzene ring moiety may be optionally substituted by one or two atoms or groups independently selected from the group consisting of a halogen atom, a C1-4 alkyl group, a C1-4 alkoxy group, a cyano group and a nitro group, and a salt thereof, which are useful as a novel intermediate for preparing tetrahydropyrrolo[1,2-a]pyrazin-4-spiro-3′-pyrrolidine derivatives such as Ranirestat being promising therapeutic agents for diabetic complications in a short process and in an economically advantageous and safe manner, and the process for preparing the same.
    • 本发明提供式(I)的3-肼基-2,5-二氧代吡咯烷-3-羧酸盐:其中R1是C1-6烷基等,R2是氢原子或COOR3基团,其中R3是 叔-C4-6烷基,2,2,2-三氯乙基或苄基,其中苯环部分可以任选地被一个或两个独立地选自以下的原子或基团取代:卤素原子, C 1-4烷基,C 1-4烷氧基,氰基和硝基及其盐,可用作制备四氢吡咯并[1,2-a]吡嗪-4-螺 - 3'-吡咯烷衍生物如兰尼斯特(Ranirestat)在短时间内以治疗糖尿病并发症为前景的治疗剂以及经济上有利和安全的方法及其制备方法。
    • 10. 发明申请
    • LC COMPOSITE ELECTRONIC COMPONENT
    • LC复合电子元件
    • US20100225420A1
    • 2010-09-09
    • US12782570
    • 2010-05-18
    • Daisuke TANAKAHaruhiko UENO
    • Daisuke TANAKAHaruhiko UENO
    • H03H7/00
    • H03H7/0115H01F17/0013H01F2017/0026H01G4/30H01G4/40H03H7/1766H03H2001/0085
    • An LC composite electronic component, having a large noise suppression effect without increasing in size, includes a multilayer structure in which first and second capacitor units (10), (20) and first and second coil units (30), (40) are stacked and incorporates four LC resonance circuits. A noise circulating capacitance (C21) is formed between a coil electrode (31a) and a resonance adjusting electrode (51a), and a noise circulating capacitance (C22) is formed between a coil electrode (31c) and a resonance adjusting electrode (51b). A noise circulating capacitance (C23) is formed between a coil electrode (42a) and a resonance adjusting electrode (53a), and a noise circulating capacitance (C24) is formed between a coil electrode (42c) and a resonance adjusting electrode (53b). A noise circulating capacitance (C25) is formed between lead-out electrodes (32a), (41b), and a noise circulating capacitance (C26) is formed between lead-out electrodes (32d), (41d).
    • 具有不增大尺寸的噪声抑制效果大的LC复合电子元件包括其中第一和第二电容器单元(10),(20)和第一和第二线圈单元(30),(40)堆叠的多层结构 并集成了四个LC谐振电路。 在线圈电极(31a)和谐振调节电极(51a)之间形成噪声循环电容(C21),在线圈电极(31c)和谐振调节电极(51b)之间形成噪声循环电容(C22) 。 在线圈电极(42a)和共振调节电极(53a)之间形成噪声循环电容(C23),在线圈电极(42c)和谐振调整电极(53b)之间形成噪声循环电容(C24) 。 在引出电极(32a),(41b)之间形成噪声循环电容(C25),在引出电极(32d),(41d)之间形成噪声循环电容(C26)。