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    • 1. 发明授权
    • Process for preparation of 1-alkyl-5-benzoyl-1H-tetrazole derivatives
    • 1-烷基-5-苯甲酰基-1H-四唑衍生物的制备方法
    • US08273781B2
    • 2012-09-25
    • US13255345
    • 2010-03-08
    • Tatsumi SuzukiTadashi SugiuraYoshikazu Ito
    • Tatsumi SuzukiTadashi SugiuraYoshikazu Ito
    • A61K31/41C07D257/04
    • C07D257/04
    • The present invention provides a process for preparation of 1-alkyl-5-benzoyl-1H-tetrazole derivative including a step 1 of reacting a ketoamide derivative represented by formula (I) (in formula (I), A represents a halogen atom or the like; n represents an integer of 0 to 5; Y represents an alkyl group) with a halogenating agent to obtain an imidoyl halide derivative represented by formula (II) (in formula (II), A, n and Y are as defined above; X represents a halogen atom); and a step 2 of reacting the imidoyl halide derivative represented by formula (II) with an azide represented by formula (III) (in formula (III), M represents an alkali metal or the like; m represents 1 or 2) to obtain a 1-alkyl-5-benzoyl-1H-tetrazole derivative represented by formula (IV) (in formula (IV), A, n and Y are as defined above).
    • 本发明提供一种制备1-烷基-5-苯甲酰基-1H-四唑衍生物的方法,其包括使式(I)表示的酮酰胺衍生物(式(I)中的A表示卤素原子或 (II)表示的亚氨基卤化物衍生物(式(II)中,A,n和Y如上所定义),卤素化合物与式(II)表示的亚氨基卤化物衍生物相同,式中,n表示0〜5的整数,Y表示烷基,Y表示烷基) X表示卤素原子); 和式(II)表示的亚氨基卤衍生物与式(III)表示的叠氮化物(式(III)中的M表示碱金属等,m表示1或2)反应,得到 由式(IV)表示的1-烷基-5-苯甲酰基-1H-四唑衍生物(式(IV)中,A,n和Y如上所定义)。
    • 4. 发明授权
    • Jitter-free sweep generator for a cathode ray oscilloscope
    • 用于阴极射线示波器的无抖动扫描发生器
    • US4651065A
    • 1987-03-17
    • US762880
    • 1985-08-06
    • Tatsumi Suzuki
    • Tatsumi Suzuki
    • G01R13/24G01R13/32H01J29/70
    • G01R13/24G01R13/32
    • A sweep generator for the delivery of a sweep signal to a deflection system (typically horizontal) of a cathode ray tube, including a sawtooth generator for generating a sawtooth waveform containing a ramp which determines the duration of each sweep. A frequency divider such as a D flip flop is connected to a trigger circuit for generating, when enabled by a holdoff signal, output pulses whose recurrence rate is a submultiple of that of the incoming trigger pulses. Also when enabled by the holdoff signal, a sweep gating flip flop responds to the first output pulse from the frequency divider for causing the sawtooth generator to generate the sweep ramp. Thus, since the sweep gating flip flop does not directly responds to the trigger pulses, but to the output pulses of the frequency divider, no jitter is to take place if the holdoff signal acquires a prescribed state for sweep initiation concurrently with a trigger pulse. An additional embodiment is disclosed which includes a pseudotrigger pulse generator for affording a higher sweep frequency when the trigger frequency is low.
    • 用于将扫描信号传送到阴极射线管的偏转系统(通常是水平的)的扫描发生器,包括用于产生锯齿波形的锯齿波发生器,该锯齿波形包含确定每次扫描持续时间的斜坡。 诸如D触发器的分频器连接到触发电路,用于当通过释放信号使能时,其产生的复发率与输入触发脉冲的倍数相差的输出脉冲。 此外,当由释抑信号使能时,扫频门控触发器响应来自分频器的第一输出脉冲,以使锯齿波发生器产生扫频斜坡。 因此,由于扫频门控触发器不直接响应于触发脉冲,而是对分频器的输出脉冲进行直接响应,如果释放信号与触发脉冲同时获取用于扫描启动的规定状态,则不会发生抖动。 公开了一种额外的实施例,其包括伪触发脉冲发生器,用于当触发频率低时提供更高的扫频。