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    • 6. 发明专利
    • Oxazoleacetic acid derivative
    • 氧杂酸衍生物
    • JPS58219169A
    • 1983-12-20
    • JP10354482
    • 1982-06-15
    • Takeda Chem Ind Ltd
    • MEGURO KANJIFUJITA TAKESHI
    • A61K31/42A61K31/421A61P3/08A61P3/10C07D263/32C07D263/40
    • C07D263/32C07D263/40
    • NEW MATERIAL:An oxazoleacetic acid derivative shown by the formula I [R
      1 is group shown by the formula II (R
      4 is H, halogen, or CF
      3 ), group shown by the formula III (n is 0W3; R
      5 is H, or alkyl; R
      6 and R
      7 are alkyl, alkenyl, cycloalkyl, etc.); R
      2 is alkyl; R
      3 is H, alkyl, aralkyl].
      EXAMPLE: 5-Methyl-2-styryl-4-oxaloleacetic acid.
      USE: A remedy for diabetes. having blood sugar lowering action, improving action on sugar resistance ability, enhancing action on sensitivity to insulin, etc., showing low toxicity.
      PROCESS: For example, a compound shown by the formula NH
      2 (COR
      2 )COOR
      2 (R
      8 is alkyl, etc.) is reacted with a compound shown by the formula R
      1 COOH, etc. to give a compound shown by the formula IV, which is successively dehydrated, reduced, halogenated or sulfonylated, reacted with NaCN or KCN, finally hydrolyzed, and, if necessary, esterified, to give a compound shown by the formula I .
      COPYRIGHT: (C)1983,JPO&Japio
    • 新物质:式I所示的恶唑乙酸衍生物[R 1]是式II所示的基团(R 4是H,卤素或CF 3),由式III表示的基团(n为0-3 ; R 5是H或烷基; R 6和R 7是烷基,烯基,环烷基等); R 2是烷基; R 3是H,烷基,芳烷基]。 实施例:5-甲基-2-苯乙烯基-4-草酰乙酸。 用途:糖尿病补救措施。 具有降血糖作用,改善对耐糖能力的作用,增强对胰岛素敏感性的作用等,显示低毒性。 方法:例如,由式NH 2(COR 2)COOR 2(R 8)表示的化合物是烷基等与式R 1 COOH等表示的化合物反应。 得到式IV所示的化合物,其依次脱水,还原,卤化或磺酰化,与NaCN或KCN反应,最后水解,如果需要,酯化,得到式I所示的化合物。