Esters of (2-hydroxy-3-oxo-cyclopent-1-enyl) acetic acid and their use for preparing (−)-R-homocitric acid gamma-lactone, (+)-S-homocitric acid gamma-lactone and the corresponding (−)-R-homocitric acid and (+)-S-homocitric acid salts
    3.
    发明授权
    Esters of (2-hydroxy-3-oxo-cyclopent-1-enyl) acetic acid and their use for preparing (−)-R-homocitric acid gamma-lactone, (+)-S-homocitric acid gamma-lactone and the corresponding (−)-R-homocitric acid and (+)-S-homocitric acid salts 有权
    (2-羟基-3-氧代 - 环戊-1-烯基)乙酸的酯及其制备( - ) - R-高立高酸γ-内酯,(+) - S-高柠檬酸γ-内酯及其相应的 ( - ) - R-高磷酸和(+) - S-高磷酸盐

    公开(公告)号:US08148568B2

    公开(公告)日:2012-04-03

    申请号:US12302504

    申请日:2007-05-25

    IPC分类号: C07C69/74 C07C59/245

    摘要: Archiral (2-hydroxy-3-oxo-cyclopent-1-enyl) acetic acid) alkyl, alkylphenyl and phenyl esters, and a simple and efficient method for the synthesis of both enantiomers of homocitric acid gamma-lactone and the corresponding salts from these esters are described. The method is based on asymmetric oxidation of esters, and the steps of basic and acidic hydrolysis and final acidic lactonization of the homocitric acid into homocitric acid gamma-lactone. The homocitric acid salts are obtained after basic treatment of homocitric acid gamma-lactone. The esters, conditions and reagents used in chemical conversion and separating products are important constituents affording efficient and simple method for production of homocitric acid gamma-lactone and homocitric acid salts.

    摘要翻译: 丙酮(2-羟基-3-氧代 - 环戊-1-烯基)乙酸)烷基,烷基苯基和苯基酯,以及用于合成高柠檬酸γ-内酯和它们的相应盐的两种对映异构体的简单而有效的方法 酯描述。 该方法基于酯的不对称氧化,以及将高酸性碱性和酸性水解和最终酸性内酯化为高柠檬酸γ-内酯的步骤。 在高碱性γ-内酯进行碱处理后得到高氯酸盐。 化学转化和分离产物中使用的酯,条件和试剂是提供生产高立高酸γ-内酯和高磷酸盐的有效和简单方法的重要成分。

    ESTERS OF (2-HYDROXY-3-OXO-CYCLOPENT-1-ENYL) ACETIC ACID AND THEIR USE FOR PREPARING (-)-R-HOMOCITRIC ACID GAMMA-LACTONE, (+)-S-HOMOCITRIC ACID GAMMA-LACTONE AND THE CORRESPONDING (-)-R-HOMOCITRIC ACID AND (+)-S-HOMOCITRIC ACID SALTS
    4.
    发明申请
    ESTERS OF (2-HYDROXY-3-OXO-CYCLOPENT-1-ENYL) ACETIC ACID AND THEIR USE FOR PREPARING (-)-R-HOMOCITRIC ACID GAMMA-LACTONE, (+)-S-HOMOCITRIC ACID GAMMA-LACTONE AND THE CORRESPONDING (-)-R-HOMOCITRIC ACID AND (+)-S-HOMOCITRIC ACID SALTS 有权
    (2-羟基-3-氧代环丙-1-烯)乙酸酯及其用于制备( - ) - R-羟基丙酸酯,(+) - S-羟基丙酸酯和对应物的用途 ( - ) - R-顺式酸和(+) - S-羟基酸

    公开(公告)号:US20090187041A1

    公开(公告)日:2009-07-23

    申请号:US12302504

    申请日:2007-05-25

    IPC分类号: C07C69/76

    摘要: Archiral (2-hydroxy-3-oxo-cyclopent-1-enyl) acetic acid) alkyl, alkylphenyl and phenyl esters, and a simple and efficient method for the synthesis of both enantiomers of homocitric acid gamma-lactone and the corresponding salts from these esters are described. The method is based on asymmetric oxidation of esters, and the steps of basic and acidic hydrolysis and final acidic lactonization of the homocitric acid into homocitric acid gamma-lactone. The homocitric acid salts are obtained after basic treatment of homocitric acid gamma-lactone. The esters, conditions and reagents used in chemical conversion and separating products are important constituents affording efficient and simple method for production of homocitric acid gamma-lactone and homocitric acid salts.

    摘要翻译: 丙酮(2-羟基-3-氧代 - 环戊-1-烯基)乙酸)烷基,烷基苯基和苯基酯,以及用于合成高柠檬酸γ-内酯和它们的相应盐的两种对映异构体的简单而有效的方法 酯描述。 该方法基于酯的不对称氧化,以及将高酸性碱性和酸性水解和最终酸性内酯化为高柠檬酸γ-内酯的步骤。 在高碱性γ-内酯进行碱处理后得到高氯酸盐。 化学转化和分离产物中使用的酯,条件和试剂是提供生产高立高酸γ-内酯和高磷酸盐的有效和简单方法的重要成分。