Optically active 3,3'-dithiobis(2-amino-2methylpropionic acid) derivative and process for producing optically active 2-amino-3-mercapto-2-methylpropionic acid derivative
    1.
    发明申请
    Optically active 3,3'-dithiobis(2-amino-2methylpropionic acid) derivative and process for producing optically active 2-amino-3-mercapto-2-methylpropionic acid derivative 审中-公开
    光活性的3,3'-二硫代双(2-氨基-2-甲基丙酸)衍生物和光学活性2-氨基-3-巯基-2-甲基丙酸衍生物的制备方法

    公开(公告)号:US20070010689A1

    公开(公告)日:2007-01-11

    申请号:US10570791

    申请日:2004-08-18

    IPC分类号: C07C323/50

    摘要: The present invention provides a useful novel intermediate and a novel synthetic process that can highly prevent contamination by various impurities to an optically active R or S isomer of a 2-amino-3-mercapto-2-methylpropionic acid derivative or salt thereof useful as an intermediate for pharmaceuticals and the like and provides a process for easily and efficiently producing a high purity optically active R or S isomer of a 2-amino-3-mercapto-2-methylpropionic acid derivative or salt thereof on an industrial production scale. A process of producing a high purity 2-amino-3-mercapto-2-methylpropionic acid derivative or salt thereof includes reductively cleaving a sulfur-sulfur bond of an intermediate, which is a high purity optically active 3,3′-dithiobis(2-amino-2-methylpropionic acid) derivative substantially free of impurities. Thus, a resulting optically active 2-amino-3-mercapto-2-methylpropionic acid derivative can be produced without generating impurities as by-products which are difficult to remove.

    摘要翻译: 本发明提供了一种有用的新型中间体和新型合成方法,其可以高度防止各种杂质污染2-氨基-3-巯基-2-甲基丙酸衍生物的光学活性R或S异构体或其盐,其用作 药物等的中间体,并且以工业生产规模提供容易且有效地制备2-氨基-3-巯基-2-甲基丙酸衍生物或其盐的高纯度光学活性R或S异构体的方法。 制备高纯度2-氨基-3-巯基-2-甲基丙酸衍生物或其盐的方法包括还原性地裂解作为高纯度光学活性3,3'-二硫代双(2)的中间体的硫 - 硫键 - 氨基-2-甲基丙酸)衍生物。 因此,得到的光学活性2-氨基-3-巯基-2-甲基丙酸衍生物可以不产生作为难以除去的副产物的杂质。

    Method for isolation of n-protected s-phenylcysteine
    2.
    发明授权
    Method for isolation of n-protected s-phenylcysteine 失效
    用于分离正保护的S-苯基半胱氨酸的方法

    公开(公告)号:US06320072B1

    公开(公告)日:2001-11-20

    申请号:US09646702

    申请日:2000-12-14

    IPC分类号: C07C32100

    摘要: This invention provides a method of isolating N-protected-S-phenylcysteine (1) of high purity, expediently, efficiently and in good yield, which comprises causing said N-protected-S-phenylcysteine to be salted out in the form of a base salt in the presence of water. wherein R1 represents an amino-protecting group; R2 represents a hydrogen atom or, either independently of R1 or taken together with R1, represents an amino-protecting group.

    摘要翻译: 本发明提供了一种方法,有效和高效分离高纯度N-保护的S-苯基半胱氨酸(1)的方法,其包括使所述N-保护的S-苯基半胱氨酸以碱的形式盐析 盐,其中R 1表示氨基保护基; R 2表示氢原子,或独立地为R 1或与R 1一起表示氨基保护基。

    Processes for preparing oxazolidinone derivatives of β-hydroxyethlamine compounds and for preparing β-hydroxyethlamine compounds
    3.
    发明授权
    Processes for preparing oxazolidinone derivatives of β-hydroxyethlamine compounds and for preparing β-hydroxyethlamine compounds 失效
    制备β-羟基三甲基胺化合物的恶唑烷酮衍生物和制备β-羟基三甲基胺化合物的方法

    公开(公告)号:US07307184B2

    公开(公告)日:2007-12-11

    申请号:US10478439

    申请日:2002-05-23

    IPC分类号: C07C269/00 C07C269/06

    CPC分类号: C07D263/24 C07D263/22

    摘要: The present invention provides a process of starting from N-alkoxycarbonyl-ethylamine compounds having a leaving group at the β-position to prepare oxazolidinone derivatives of β-hydroxyethylamine compounds having an inverted steric configuration at the β-position carbon, which comprises introducing a step of treating in contact with water with heating under acidic to neutral conditions into the process. Also, the present invention provides a process of starting from N-alkoxycarbonyl-ethylamine compounds having a leaving group at the β-position to prepare β-hydroxyethylamine compounds having an inverted steric configuration at the β-position carbon, which comprises subjecting the oxazolidinone derivatives prepared as described above to a step of treating in contact with water under basic conditions.

    摘要翻译: 本发明提供了从在β-位上具有离去基团的N-烷氧基羰基 - 乙胺化合物开始以制备β-位羟基化合物的恶唑烷酮衍生物的方法,所述β-羟乙基胺化合物在β-位置碳具有反向立体构型,其包括引入步骤 在酸性到中性条件下加热处理与水接触。 此外,本发明提供了从在β-位上具有离去基团的N-烷氧基羰基 - 乙胺化合物开始以制备在β-位置碳具有反向立体构型的β-羟乙基胺化合物的方法,该方法包括使恶唑烷酮衍生物 如上所述制备成在碱性条件下与水接触的步骤。

    Process for producing of cysteine derivatives
    4.
    发明授权
    Process for producing of cysteine derivatives 失效
    半胱氨酸衍生物的制备方法

    公开(公告)号:US6011170A

    公开(公告)日:2000-01-04

    申请号:US142688

    申请日:1999-04-22

    摘要: This invention relates to a method comprising reacting an amino acid derivative of the following general formula (I); ##STR1## (wherein R.sup.1 represents an amino-protective group; R.sup.0 represents hydrogen or, taken together with R.sup.1, represents an amino-protecting group; R.sup.2 represents a carboxy-protecting group; X represents a leaving group) with a thiol compound of the following general formula (II):R.sup.3 SH (II)(wherein R.sup.3 represents an alkyl group of 1 to 7 carbon atoms, an aryl group of 6 to 10 carbon atoms, or an aralkyl group of 7 to 10 carbon atoms) to give a cysteine derivative of the following general formula (III): ##STR2## (wherein R.sup.0, R.sup.1, R.sup.2, and R.sup.3 are as defined above), wherein the reaction is conducted in the presence of a base and water in an organic reaction solvent.

    摘要翻译: PCT No.PCT / JP98 / 00101 Sec。 371日期1999年4月22日 102(e)日期1999年4月22日PCT提交1998年1月14日PCT公布。 第WO98 / 30538号公报 日期:1998年7月16日本发明涉及使下述通式(I)的氨基酸衍生物反应的方法。 (其中R 1表示氨基保护基; R 0表示氢或与R 1一起表示氨基保护基; R 2表示羧基保护基; X表示离去基团)与下列通式的硫醇化合物反应 (II):R3SH(II)(其中R3表示1〜7个碳原子的烷基,6〜10个碳原子的芳基或7〜10个碳原子的芳烷基),得到 以下通式(III):(其中R 0,R 1,R 2和R 3如上定义),其中反应在有机反应溶剂中在碱和水的存在下进行。

    Process for producing 3-amino-2-hydroxypropionic acid derivatives
    5.
    发明授权
    Process for producing 3-amino-2-hydroxypropionic acid derivatives 失效
    3-氨基-2-羟基丙酸衍生物的制备方法

    公开(公告)号:US07057066B2

    公开(公告)日:2006-06-06

    申请号:US10312208

    申请日:2001-06-26

    IPC分类号: C07C229/06 C07C229/34

    摘要: The present invention provides a process for preparing 3-amino-2-hydroxypropionic acid derivatives (1) which does not use dangerous reagents, is economically advantageous, and is suitable for an industrial production, which process comprises: treating N-protected-3-amino-2-hydroxypropionic acid derivatives (2) having a steric configuration at 2-position carbon reverse to that of derivatives (1) with a leaving group-introducing agent to convert into N-protected-3-aminopropionic acid derivatives (3), then treating the derivatives with a basic substance to convert into substituted-3-amino-2-hydroxypropionic acid derivatives (4) having an inverted steric configuration at 2-position carbon, and then converting the derivatives into 3-amino-2-hydroxypropionic acid derivatives (1).

    摘要翻译: 本发明提供了一种制备不使用危险试剂的3-氨基-2-羟基丙酸衍生物(1)的方法,在经济上是有利的,适用于工业生产,该方法包括:将N-保护的3- 具有与衍生物(1)相反的2-位碳位置的氨基-2-羟基丙酸衍生物(2)与离去基团引入剂转化为N-保护的3-氨基丙酸衍生物(3), 然后用碱性物质处理衍生物,将其转化成在2-位碳上具有反向立体构型的取代-3-氨基-2-羟基丙酸衍生物(4),然后将其转化为3-氨基-2-羟基丙酸 衍生物(1)。

    Process for producing optically active cysteine derivatives
    6.
    发明授权
    Process for producing optically active cysteine derivatives 失效
    光学活性半胱氨酸衍生物的制备方法

    公开(公告)号:US06407281B1

    公开(公告)日:2002-06-18

    申请号:US09600253

    申请日:2000-08-25

    IPC分类号: C07C32100

    摘要: A process for producing optically active cysteine derivatives with high optical purity and good quality which is economically advantageous and is high in productivity even on a commercial scale is provided. A process for producing an optically active cysteine derivative which comprises synthesizing a D-form or L-form optically active cysteine derivative of the general formula (2) shown below (R1 represents an amino-protecting group of the urethane or acyl type, R0 represents a hydrogen atom or, taken together with R1, an amino-protecting group, R2 represents an alkyl, aryl or aralkyl group, R3 represents a univalent organic group and * represents the position of an asymmetric carbon) by reacting the corresponding D-form or L-form optically active amino acid derivative of the general formula (1) shown below with an alcohol of the general formula (3) shown below and a strong acid and/or a thionyl halide and recovering the above cysteine derivative (2) from the reaction mixture, the procedural series from reaction to recovery being carried out under conditions such that the medium contacting the above optically active cysteine derivative (2) is within the range from acidic to weakly basic to thereby recover the above cysteine derivative (2) from the reaction mixture while suppressing the decomposition and racemization thereof.

    摘要翻译: 提供一种制造光学活性半胱氨酸衍生物的方法,该方法具有高光学纯度和良好的质量,其在经济上是有利的并且即使在商业规模下也具有高生产率。1.一种光学活性半胱氨酸衍生物的制备方法,其包括合成D型或L型 (2)的光学活性半胱氨酸衍生物(R1表示氨基甲酸酯或酰基型氨基保护基,R 0表示氢原子,或与R 1一起形成氨基保护基,R2表示 烷基,芳基或芳烷基,R 3表示一价有机基团,*表示不对称碳的位置),通过使下述通式(1)的相应的D型或L型光学活性氨基酸衍生物与 如下所示的通式(3)的醇和强酸和/或亚硫酰卤并从反应混合物中回收上述半胱氨酸衍生物(2),程序 在与上述光学活性半胱氨酸衍生物(2)接触的介质在酸性至弱碱性的范围内,从反应混合物中回收上述半胱氨酸衍生物(2)的条件下进行反应回收的ural系列,同时抑制 其分解和外消旋化。

    Process for the purification or isolation of
(2S,3R)-1-halo-2-hydroxy-3-(protected amino)4-phenylthiobutanes or
optical antipodes thereof
    7.
    发明授权
    Process for the purification or isolation of (2S,3R)-1-halo-2-hydroxy-3-(protected amino)4-phenylthiobutanes or optical antipodes thereof 失效
    纯化或分离(2S,3R)-1-卤代-2-羟基-3-(被保护的氨基)-4-苯硫基丁烷或其光学对映体的方法

    公开(公告)号:US6107511A

    公开(公告)日:2000-08-22

    申请号:US269298

    申请日:1999-05-14

    CPC分类号: C07C319/28 Y02P20/55

    摘要: The present invention has for its object to provide a commercially useful, expedient and efficient method for purification and isolation of an N-protected (2S,3R)-1-halo-2-hydroxy-3-amino-4-phenylthiobutane (1) or its enantiomer, which is capable of removing the various contaminants, particularly said byproducts, whereby the problem of instability of the compound (1) or its enantiomer can be overcome and a high product yield can be insured.The present invention relates to a method of purifying and isolating an N-protected (2S,3R)-1-halo-2-hydroxy-3-amino-4-phenylthiobutane (1): ##STR1## (wherein X represents a halogen atom; one of P.sup.1 and P.sup.2 represents a hydrogen atom and the other represents an amino-protecting group, or P.sup.1 and P.sup.2 taken together represents an amino-protecting group) or its enantiomer, which comprises using an aromatic hydrocarbon solvent to remove impurities occurring in said compound (1) or impurities occurring in said enantiomer from said compound (1) containing impurities or its enantiomer containing impurities and isolate said compound (1) or said enantiomer as crystals.

    摘要翻译: PCT No.PCT / JP98 / 03375 Sec。 371日期1999年5月14日 102(e)日期1999年5月14日PCT提交1998年7月29日PCT公布。 出版物WO99 /​​ 06364 日期1999年2月11日本发明的目的是提供用于纯化和分离N-保护的(2S,3R)-1-卤代-2-羟基-3-氨基-4 (1)或其对映异构体,其能够除去各种污染物,特别是所述副产物,由此可以克服化合物(1)或其对映体的不稳定性问题,并且可以保证高产率。 本发明涉及纯化和分离N-保护的(2S,3R)-1-卤代-2-羟基-3-氨基-4-苯基硫代丁烷(1)的方法:(其中X表示卤素原子; P1和P2表示氢原子,另一个表示氨基保护基,或P1和P2一起表示氨基保护基)或其对映异构体,其包括使用芳烃溶剂除去在所述化合物(1)中发生的杂质 )或杂质存在于所述含有杂质的化合物(1)的所述对映异构体中,或将所述化合物(1)或所述对映异构体分离为晶体。

    Processes for producing &bgr;-halogeno-&agr;-amino-carboxylic acids and phenylcysteine derivatives and intermediates thereof
    8.
    发明授权
    Processes for producing &bgr;-halogeno-&agr;-amino-carboxylic acids and phenylcysteine derivatives and intermediates thereof 失效
    制备β-卤代-α-氨基 - 羧酸和苯基半胱氨酸衍生物的方法及其中间体

    公开(公告)号:US06372941B1

    公开(公告)日:2002-04-16

    申请号:US09582461

    申请日:1999-08-16

    IPC分类号: C07C22900

    摘要: An industrially advantageous method of producing &bgr;-halogeno-&agr;-aminocarboxylic acids is provided. Methods are also provided of producing optically active N-protected-S-phenylcysteines having high optical purity and of intermediates thereof, respectively, in which the above production method is utilized. A method of producing &bgr;-halogeno-&agr;-aminocarboxylic acids or salts thereof is disclosed which comprises halogenating the hydroxyl group of a &bgr;-hydroxy-&agr;-aminocarboxylic acid (in which the basicity of the amino group in &agr;-position is not masked by the presence of a substituent on said amino group) or a salt thereof with an acid with a halogenating agent. A method of producing optically active N-protected-S-phenylcysteines represented by the general formula (3) or salts thereof is further disclosed which comprises applying the above production method to optically active serine or a salt thereof and then carrying out treatment with an amino-protecting agent and reaction with thiophenol under a basic condition.

    摘要翻译: 提供了产生β-卤代-α-氨基羧酸的工业上有利的方法。 还提供了分别制备具有高光学纯度的光学活性N-保护的S-苯基半胱氨酸及其中间体的方法,其中使用上述制备方法.1。制备β-卤代-α-氨基羧酸或其盐的方法 其中包括将β-羟基-α-氨基羧酸的羟基(其中在所述氨基上不存在取代基的α-位置上的氨基的碱性)或其盐与卤素化反应 具有卤化剂的酸。 进一步公开了制备由通式(3)表示的光学活性N-保护的S-苯基半胱氨酸或其盐的方法,其包括将上述制备方法应用于光学活性丝氨酸或其盐,然后用氨基 保护剂和与苯硫酚在基本条件下的反应。

    Processes for the preparation of threo-1,2-epoxy-3-amino-4-phenylbutane derivatives
    9.
    发明授权
    Processes for the preparation of threo-1,2-epoxy-3-amino-4-phenylbutane derivatives 有权
    制备苏式-1,2-环氧-3-氨基-4-苯基丁烷衍生物的方法

    公开(公告)号:US06344572B1

    公开(公告)日:2002-02-05

    申请号:US09647340

    申请日:2000-11-17

    IPC分类号: C07D30102

    CPC分类号: C07D301/26 C07D303/36

    摘要: The present invention provides a production method of high quality threo-1,2-epoxy-3-amino-4-phenylbutane derivatives (1) on a commercial scale in a simple, easy and efficient manner and with very high productivity, which comprises treating a threo-1-halo-2-hydroxy-3-amino-4-phenylbutane derivative (2) with a base in a polar organic solvent or a solvent composed of a polar organic solvent and water, and adding the resulting reaction mixture to water to thereby cause the resulting threo-1,2-epoxy-3-amino-4-phenylbutane derivative (1) to crystallize out.

    摘要翻译: 本发明以简单,容易和有效的方式以非常高的生产率提供了高质量的threo-1,2-epoxy-3-氨基-4-苯基丁烷衍生物(1)的制备方法,其包括处理 在极性有机溶剂或由极性有机溶剂和水组成的溶剂中的碱,将苏-1-卤代-2-羟基-3-氨基-4-苯基丁烷衍生物(2)与碱反应,并将得到的反应混合物加入到水 从而使得到的所述苏-12-环氧-3-氨基-4-苯基丁烷衍生物(1)结晶出来。

    Magnetic media processing device
    10.
    发明授权
    Magnetic media processing device 有权
    磁介质处理装置

    公开(公告)号:US06400517B1

    公开(公告)日:2002-06-04

    申请号:US09617244

    申请日:2000-07-14

    申请人: Hiroshi Murao

    发明人: Hiroshi Murao

    IPC分类号: G11B2504

    CPC分类号: G06K7/084

    摘要: A magnetic media processing device including an encoder for producing an output for a predetermined distance in a conveyance distance of a magnetic media on conveyance, a road circuit device for reading magnetic data stored in the magnetic media in synchronizing the output from the encoder to be processed as to its waveforms to produce read data, and an arithmetic device for converting a data length to data of a distance based on a time component of a data length of the read data of the read circuit device by employing the output signal from the encoder to read data based on distance data, wherein the arithmetic device compensates the process delay time in a time component of read data produced from the read circuit device when the arithmetic device converts the data length into the data of distance.

    摘要翻译: 一种磁性介质处理装置,包括:编码器,用于在输送时在磁性介质的输送距离内产生预定距离的输出;轨道电路装置,用于读取存储在磁性介质中的磁数据,同步来自待处理编码器的输出 关于其产生读取数据的波形,以及运算装置,用于根据读取电路装置的读取数据的数据长度的时间分量将数据长度转换成距离的数据,方法是使用来自编码器的输出信号 基于距离数据读取数据,其中当运算装置将数据长度转换成距离的数据时,运算装置补偿从读取电路装置产生的读取数据的时间分量中的处理延迟时间。