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    • 3. 发明公开
    • Chroman-6-sulphonyl derivatives
    • 苯并二氢吡喃-6-磺酰基 - 衍生物。
    • EP0293073A1
    • 1988-11-30
    • EP88303197.3
    • 1988-04-11
    • Wendstone Chemicals P.L.C.
    • Ramage, Robert
    • C07D311/70C07B51/00C07C229/00C07C227/00
    • C07D311/70Y02P20/55
    • A class of novel chemical compounds comprising derivatives of 2,2,5,7,8-pentamethylchroman-6-sulphonyl and having the structural formula
      wherein X is selected from halogen and other groups having acidic functionality. We prefer that the X-group be chlorine.
      The said compounds are made by the sulphonation of 2,2,5,7,8-pentamethylchroman, preferably using chlorosulphonic acid.
      The primary utility of the compounds of the present invention is in the protection of functional groups in organic synthesis and more particularly in the protection of basic functional amino groups, such as amidines and guanidines.
      The invention also provides a method of making the protecting group and a protected amino acid.
    • 一类包含2,2,5,7,8-五甲基苯并二氢吡喃-6-磺酰基的衍生物并具有结构式的新化合物,其中X选自卤素和具有酸性官能团的其它基团。 我们更喜欢X-group是氯。 所述化合物是通过磺化2,2,5,7,8-五甲基苯并二氢吡喃,优选使用氯磺酸制备的。 本发明化合物的主要用途是保护有机合成中的官能团,特别是保护碱性官能氨基,如脒和胍。 本发明还提供了制备保护基和被保护的氨基酸的方法。