PROCESS FOR PRODUCING PHENYLALANINE DERIVATIVE HAVING QUINAZOLINEDIONE SKELETON AND INTERMEDIATE FOR THE SAME
    2.
    发明公开
    PROCESS FOR PRODUCING PHENYLALANINE DERIVATIVE HAVING QUINAZOLINEDIONE SKELETON AND INTERMEDIATE FOR THE SAME 有权
    用于生产具有CHINAZOLINDIONSKELETT和中间体THEREFOR甲苯丙氨酸衍生物

    公开(公告)号:EP1595870A4

    公开(公告)日:2009-02-25

    申请号:EP04713193

    申请日:2004-02-20

    申请人: AJINOMOTO KK

    CPC分类号: C07D239/96 C07C233/87

    摘要: A process for producing a phenylalanine derivative which has a quinazolinedione ring and is represented by the formula (5), which comprises reacting an acylphenylalanine derivative represented by the formula (1) with a reagent for carbonyl group introduction and an anthranilic acid derivative to form an asymmetric urea intermediate, converting this asymmetric urea intermediate to a quinazolinedione compound in the presence of a base, and N-alkylating the resultant quinazolinedione compound at the amide group of the quinazolinedione ring with an N-alkylating agent. This process is suitable for the industrial production of the phenylalanine derivative containing a quinazolinedione skeleton, which is a compound highly useful as a medicine having integrin α4 inhibitory activity. In the formulae (1) and (5), R1 represents substituted phenyl, etc.; R2 represents alkyl, etc.; R3 represents dialkylamino, etc.; and R4 represents alkyl, etc.

    PROCESS FOR PRODUCTION OF OPTICALLY ACTIVE CARBOXYLIC ACID
    4.
    发明公开
    PROCESS FOR PRODUCTION OF OPTICALLY ACTIVE CARBOXYLIC ACID 有权
    工艺生产光学活性羧酸

    公开(公告)号:EP1489066A4

    公开(公告)日:2006-05-31

    申请号:EP03743568

    申请日:2003-03-04

    申请人: AJINOMOTO KK

    摘要: The invention provides a process for production of optically active 2,2-dimethylcyclopropanecarboxylic acid by reacting an optical isomer mixture of 2,2-dimethylcyclo- propanecarboxylic acid with an optically inactive amine to form (precipitate or crystallize) an ammonium salt of optically active 2,2-dimethylcyclopropanecarboxylic acid, e.g., optically active (S)-(+)-2,2-dimethylcyclopropanecarboxylic acid. According to the invention, the production (including optical resolution, separation of optical isomers, and purification of optical isomers) of optically active 2,2-dimethylcyclopropanecarboxylic acid important as an intermediate in the production of agricultural chemicals and drugs can be easily carried out at a low cost. Further, the invention provides intermediates for the above production (e.g., ammonium salts of optically active 2,2-dimethylcyclopropanecarboxylic acid, particularly, ammonium salts of optically active (S)-(+)-2,2-dimethyl- cyclopropanecarboxylic acid) and reagents for optical resolution for the separation of optically active 2,2- dimethylcyclopropanecarboxylic acid (e.g., optically inactive amines).

    PROCESS FOR PREPARING ANTIFUNGAL V-28-3M
    5.
    发明公开
    PROCESS FOR PREPARING ANTIFUNGAL V-28-3M 失效
    VERFAHREN ZUR HERSTELLUNG DES FUNGZIDIES V-28-3M

    公开(公告)号:EP0987273A4

    公开(公告)日:2001-11-07

    申请号:EP98923090

    申请日:1998-06-02

    申请人: AJINOMOTO KK

    IPC分类号: C07H17/08

    CPC分类号: C07H17/08 Y02P20/55

    摘要: An industrializable process for preparing V-28-3M useful as an antifungal by methylating V-28-3 efficiently. The process comprises protecting the amino group of the amino sugar moiety of V-28-3 with a suitable protective group, methylating the carboxyl group of V-28-3 with methyl methanesulfonate or p-toluenesulfonate in the presence of a base, and removing the amino protective group of the resultant methyl ester.

    摘要翻译: 用于通过有效地甲基化V-28-3来制备可用作抗真菌剂的V-28-3M的可工业化方法。 该方法包括用合适的保护基保护V-28-3的氨基糖部分的氨基,在碱存在下用甲磺酸甲酯或对甲苯磺酸甲酯将V-28-3的羧基甲基化, 所得甲酯的氨基保护基。