N-acetyl-beta-D-glucosamides having formula (I) are new. Where R1, R2 and R3 are H, lower alkyl or halogen; Y2 is an alk. metal. (I) are prepd. by reacting (II) with (III). (III) is treated with alk, metal base to open the sultone ring and to form a SO2OY gp., which the p-OH gp. forms p-OY. And treated with (II), and then O-acetyl gps. are removed, opt. with inter mediate sultone ring formation. (II) and (III) may be reacted directly in the presence of base in a polar solvent.
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机译：具有式（I）的N-乙酰基-β-D-葡糖酰胺是新的。其中R1，R2和R3为H，低级烷基或卤素; Y 2是一个alk。金属。 （一）准备。使（II）与（III）反应。 （III）用烷基，金属碱处理以打开磺内酯环并形成SO 2 OY gp。，其为p-OH gp。形成p-OY。并用（II）处理，然后用O-乙酰基gps处理。被删除，选择。具有中间磺内酯环形成。 （II）和（III）可以在碱的存在下在极性溶剂中直接反应。
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