Process for preparing optically active 2-[6-(hydroxy-methyl)-1,3-dioxan-4-yl] acetic acid derivatives
    61.
    发明授权
    Process for preparing optically active 2-[6-(hydroxy-methyl)-1,3-dioxan-4-yl] acetic acid derivatives 失效
    光学活性的2- [6-(羟基 - 甲基)-1,3-二恶烷-4-基]乙酸衍生物的制备方法

    公开(公告)号:US07094594B2

    公开(公告)日:2006-08-22

    申请号:US10048553

    申请日:2001-06-05

    IPC分类号: C12P41/00

    CPC分类号: C07D319/06 C12P7/42 C12P17/06

    摘要: The present invention is to provide a production technology by which an optically active 2-[6-(hydroxymethyl)-1, 3-dioxan-4-yl]acetic acid derivative, which are of value as pharmaceutical intermediates, can be produced from inexpensive and readily available starting materials without using any extraordinary equipment such as an ultra-low-temperature reactor.The present invention is a production process of an optically active 2-[6-(hydroxymethyl)-1,3-dioxan-4-yl]acetic acid derivative which comprises reacting an enolate, prepared by permitting a base or a 0-valent metal to act on an acetic acid ester derivative with (S)-β-hydroxy-γ-butyrolactone at a temperature not lower than −30° C. to give a dihydroxyoxohexanoic acid derivative, treating the same with an acylating agent in the presence of a base to produce a dihydroxyoxohexanoic acid monoacyl derivative, reducing this compound with a microorganism to produce a trihydroxyhexanoic acid monoacyl derivative, treating this compound with an acetal-forming reagent in the presence of an acid catalyst to produce an acyloxymethyldioxanylacetic acid derivative, and finally, subjecting this compound to solvolysis in the presence of a base.

    摘要翻译: 本发明提供一种生产技术,通过该技术,可以从廉价的方式制备价值为药物中间体的光学活性的2- [6-(羟甲基)-1,3-二恶烷-4-基]乙酸衍生物 和容易获得的起始材料,而不使用任何非常设备,例如超低温反应器。 本发明是光学活性的2- [6-(羟甲基)-1,3-二恶烷-4-基]乙酸衍生物的制备方法,该方法包括使通过使碱或0价金属 在不低于-30℃的温度下用(S)-β-羟基-γ-丁内酯在乙酸酯衍生物上作用,得到二羟基氧代己酸衍生物,在酰化剂存在下用酰化剂处理 碱化以制备二羟基氧己基单酰基衍生物,用微生物还原该化合物以产生三羟基己酸单酰基衍生物,在酸催化剂存在下用缩醛形成试剂处理该化合物,得到酰氧基甲基二恶烷基乙酸衍生物,最后, 该化合物在碱存在下溶剂解。

    Optically active halohydrin derivative and process for producing optically active epoxy alcohol derivative from the same

    公开(公告)号:US20060155136A1

    公开(公告)日:2006-07-13

    申请号:US10563635

    申请日:2004-07-05

    IPC分类号: C07D301/27

    摘要: The present invention provides an industrially safe, easily operable process for producing an optically active epoxy alcohol derivative useful as an intermediate for pharmaceuticals from inexpensively available materials, and also provides a novel halohydrin derivative serving as an important intermediate for the epoxy alcohol derivative. Furthermore, the present invention provides a process for producing an intermediate for a triazole antifungal agent by allowing a halohydrin to react with a triazole sulfonamide, the process including a small number of steps. A process for producing an optically active epoxy alcohol derivative includes allowing an optically active α-substituted propionate derivative to react with a haloacetic acid derivative in the presence of a base to prepare an optically active haloketone derivative, allowing the resulting haloketone derivative to react with an aryl metal compound to stereoselectively prepare a halohydrin derivative, eliminating a substituent for the hydroxy group of the halohydrin derivative, and performing epoxidation with a base. Furthermore, a process for producing an intermediate for a triazole antifungal agent includes allowing a halohydrin derivative to react with a triazole sulfonamide, the process including a small number of steps.

    Piezoelectric resonator and electronic component provided therewith
    63.
    发明授权
    Piezoelectric resonator and electronic component provided therewith 有权
    压电谐振器和电子元件

    公开(公告)号:US07075214B2

    公开(公告)日:2006-07-11

    申请号:US11061883

    申请日:2005-02-22

    IPC分类号: H01L41/08 H03H9/54

    摘要: A piezoelectric resonator according to an embodiment of the present invention is a piezoelectric resonator for obtaining a signal of a predetermined resonance frequency from a bulk acoustic wave propagating inside a piezoelectric film. This piezoelectric resonator has a plurality of transducers stacked in a predetermined direction, and a propagation area of the bulk acoustic wave varies in a propagation direction of the bulk acoustic wave.

    摘要翻译: 根据本发明的实施例的压电谐振器是用于从在压电膜内传播的体声波获得预定谐振频率的信号的压电谐振器。 该压电谐振器具有沿预定方向堆叠的多个换能器,并且体声波的传播面积在体声波的传播方向上变化。

    Surface acoustic wave device and branching filter

    公开(公告)号:US20060125349A1

    公开(公告)日:2006-06-15

    申请号:US11352338

    申请日:2006-02-13

    IPC分类号: H03H9/25

    CPC分类号: H03H9/6483 H03H9/14588

    摘要: A surface acoustic wave device is provided with an input signal electrode 15 and an output signal electrode 16 to and from which an electric signal is inputted or outputted; a first surface acoustic wave resonator 18 including an input terminal 18a connected to the input signal electrode 15 and having a plurality of comb electrodes, an output terminal 18b connected to the output signal electrode 16 and having a plurality of comb electrodes, a common terminal 18c which has a plurality of comb electrodes and which forms interdigital transducers A and B together with the comb electrodes of the input terminal 18a and the comb electrodes of the output terminal 18b; and a second surface acoustic wave resonator 19 connected between the common terminal 18c of the first surface acoustic wave resonator 18 and a pair of grounding terminals 17.

    Method for producing optically active 3,5-dihydroxycarboxylic acid derivative
    66.
    发明授权
    Method for producing optically active 3,5-dihydroxycarboxylic acid derivative 失效
    光学活性3,5-二羟基羧酸衍生物的制造方法

    公开(公告)号:US06998495B2

    公开(公告)日:2006-02-14

    申请号:US10492507

    申请日:2002-10-24

    IPC分类号: C07C51/36

    摘要: A method for producing an optically active 3,5-dihydroxyhexanoic acid derivative by stereoselectively reducing an optically active 3-oxo-5-hydroxyhexanoic acid derivative is provided. The method, which requires neither an ultralow-temperature reactor, an incubator, nor protection of the 5-position hydroxy group, is simple and economical.An optically active 3,5-dihydroxyhexanoic acid derivative is produced by asymmetrical hydrogenation of an optically active 3-oxo-5-hydroxyhexanoic acid derivative catalyzed by an RuBr2BINAP complex prepared from a ruthenium complex and a ruthenium-optically active phosphine complex, i.e., 2,2′-bisdiarylphosphino-1,1′-binaphthyl (BINAP), while using extremely inexpensive hydrogen as the reductant.

    摘要翻译: 提供了通过立体选择性还原旋光性3-氧代-5-羟基己酸衍生物制备光学活性3,5-二羟基己酸衍生物的方法。 既不需要超低温反应器,培养箱也不需要保护5位羟基的方法简单经济。

    Film bulk acoustic wave resonator
    67.
    发明申请
    Film bulk acoustic wave resonator 有权
    薄膜体声波谐振器

    公开(公告)号:US20050189846A1

    公开(公告)日:2005-09-01

    申请号:US11028992

    申请日:2005-01-03

    摘要: A film bulk acoustic wave resonator of the invention includes a substrate; a resonant structure provided on the substrate constituted by a lower electrode, a piezoelectric film and an upper electrode; and an acoustic multilayer of a plurality of reflective films provided between the substrate and the resonant structure. At least one of the reflective films of the acoustic multilayer has a specified crystal plane orientation, and an X-ray rocking curve full width at half maximum that is preferably not greater than 10 degrees, and more preferably is not greater than 3 degrees. This makes it possible to obtain better resonance characteristics than in the case of the prior art, by increasing the efficiency with which bulk waves propagating towards the substrate are reflected.

    摘要翻译: 本发明的薄膜体声波谐振器包括:基板; 设置在由下电极,压电膜和上电极构成的基板上的谐振结构; 以及设置在所述基板和所述谐振结构之间的多个反射膜的声学多层。 声学多层反射膜中的至少一个具有指定的晶面取向,并且X射线摇摆曲线半峰全宽优选不大于10度,更优选不大于3度。 这使得通过提高向衬底传播的体波的效率被反射,可以获得比现有技术的情况更好的谐振特性。