Sialic acid derivative with active ester groups
    6.
    发明公开
    Sialic acid derivative with active ester groups 失效
    AktiveSialsäureester-Derivate。

    公开(公告)号:EP0371495A2

    公开(公告)日:1990-06-06

    申请号:EP89122070.9

    申请日:1989-11-29

    申请人: MECT CORPORATION

    摘要: Sialic acid derivative with active ester groups expressed with the formula [I]

    Where R 1 denotes hydrogen or acetyl group, R 2 hydrogen or lower alkyl group, R 3 C 2 H 4 , C 3 H 6 or C 2 H 2 , R 4 hydroxyl group, residue left after removing hydrogen from the alcohol portion of active ester or alkyloxycarbonyloxy group, Ac acetyl group, Ph phenyl group, X oxygen or sulfur. This sialic acid derivative has high reactivity because it has active ester groups in molecules and can be used as raw material or intermediate for synthesis of various sialic acid derivatives.

    摘要翻译: 其中R 1表示氢或乙酰基,R 2为氢或低级烷基,R 3为C 2 H 4,C 3 H 6或C 2 H 2,R 2为氢, 4个羟基,从活性酯或烷氧基羰氧基的醇部分除去氢后留下的残基,Ac乙酰基,Ph苯基,X氧或硫。 该唾液酸衍生物具有高反应性,因为它在分子中具有活性酯基,可用作合成各种唾液酸衍生物的原料或中间体。