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    • 127. 发明专利
    • Cyclohexene derivative
    • 环己酮衍生物
    • JPS61118345A
    • 1986-06-05
    • JP23989584
    • 1984-11-14
    • Yasumitsu Tamura
    • TAMURA YASUMITSUSASHO MANABUOE HIROKOAKAI SHUJIKITA YASUYUKI
    • C07D311/76C07C45/00C07C50/36C07C51/00C07C59/46C07C62/02C07C67/00C07C69/732C07C69/757C07F7/08C07F7/12
    • NEW MATERIAL:The compound of formula I [R
      1 and R
      2 are H or lower alkyl; R
      3 is tri (lower alkyl) silyl or H; the group of formula II may be cyclized to form the group of formula III].
      EXAMPLE: Ethyl 2-carboethoxy-5-hydroxy-5-trimethylsilylethynyl-1-cyclohexy- lideneacetate.
      USE: Synthetic intermediate of daunomycin, etc.
      PREPARATION: A compound of formula I whrerein R
      1 WR
      3 are H can be pre pared by reacting the compound of formula IV (R
      1 ' and R
      2 ' are lower alkyl) with the compound of formula CH≡C-R
      3 , and hydrolyzing and/or desilylating the resultant compound of formula V. The product can be converted to another compound of formula I wherein the group of formula II is the group of formula III and R
      3 is H by cyclization.
      COPYRIGHT: (C)1986,JPO&Japio
    • 新材料:式I化合物[R 1和R 2]为H或低级烷基; R 3是三(低级烷基)甲硅烷基或H; 式II的基团可以被环化以形成式III的基团]。 实施例:2-乙酰乙氧基-5-羟基-5-三甲基甲硅烷基乙炔基-1-环己基 - 己烯乙酸乙酯。 用途:道诺霉素的合成中间体等制备:式Ⅰ化合物R 1 -R 3可以是H,可以通过使式Ⅳ化合物(R 1'和R 2) 与式C化合物C-R 3的化合物'是低级烷基),并将所得到的式V化合物水解和/或去甲硅烷基化。该产物可以转化成另一种式I化合物,其中式II基团是基团 的式III化合物,R 3为环状的H。