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    • 5. 发明授权
    • Imidazolidinone derivative, method of producing the same and method of producing optically active amino acid
    • 咪唑啉酮衍生物,其制备方法和制备光学活性氨基酸的方法
    • US07947722B2
    • 2011-05-24
    • US12309729
    • 2007-05-14
    • Yasuhiro SakaAkio FujiiKazumi OkuroMasaru Mitsuda
    • Yasuhiro SakaAkio FujiiKazumi OkuroMasaru Mitsuda
    • A61K31/4166C07D233/32
    • C07D233/32C07C227/22C07C231/10C07C229/14C07C229/22C07C229/36C07C237/06
    • The objective of the present invention is to provide an optically active imidazolidinone derivative widely usable for synthesizing an optically active amino acid, a method of easily producing the derivative, and a method of easily producing an optically active amino acid by using the derivative. The objective can be achieved by producing an optically active amino acid using a novel optically active imidazolidinone derivative represented by a general formula (3) and the like. According to the method of the present invention, an optically active imidazolidinone derivative can be obtained by preferential crystallization from a mixture of isomers of the imidazolidinone derivative. Therefore, an optically active amino acid can be easily and stereoselectively produced without cumbersome procedures required for the conventional methods, such as resolution of diastereomers, synthesis from an optically active amino acid and resolution of isomers by silica gel column chromatography.
    • 本发明的目的是提供广泛用于合成光学活性氨基酸的光学活性咪唑啉酮衍生物,易于制备衍生物的方法,以及通过使用该衍生物容易地制备光学活性氨基酸的方法。 可以通过使用由通式(3)等表示的新的光学活性咪唑烷酮衍生物制造光学活性氨基酸来实现。 根据本发明的方法,可以通过从咪唑烷酮衍生物的异构体的混合物中优先结晶获得光学活性咪唑烷酮衍生物。 因此,光学活性氨基酸可以容易地和立体选择性地产生,而不需要常规方法所需的繁琐程序,例如拆分非对映异构体,由光学活性氨基酸的合成和通过硅胶柱色谱法拆分异构体。
    • 10. 发明申请
    • IMAGE RECORDING APPARATUS AND IMAGE PLAYBACK APPARATUS
    • 图像记录装置和图像回放装置
    • US20100054714A1
    • 2010-03-04
    • US12547113
    • 2009-08-25
    • Akio Fujii
    • Akio Fujii
    • H04N7/26
    • G11B27/005
    • An image recording playback apparatus which, when recording moving image data, performs image capture at high-speed read time Dt, records all the captured images, and records a playback rate Ft (Vt), the read time Dt and image valid time St, with the image data, on a recording medium. Then upon playback of moving image data, the image recording playback apparatus plays back the recorded image data within the image valid time St in accordance with the playback rate. The image recording playback apparatus having this configuration can perform playback intended by a user. Further, when sharpness is to be changed, a playback image with different sharpness can be obtained by changing the image valid time St upon playback.
    • 一种图像记录播放装置,当记录运动图像数据在高速读取时间Dt进行图像捕获时,记录所有拍摄图像,并记录播放速率Ft(Vt),读取时间Dt和图像有效时间St, 与图像数据一起在记录介质上。 然后,在播放运动图像数据时,图像记录重放装置根据回放速率在图像有效时间St内重放记录图像数据。 具有这种配置的图像记录播放设备可以执行用户想要的播放。 此外,当要改变锐度时,通过在重放时改变图像有效时间St可以获得具有不同清晰度的重放图像。