申请人:Sankyo Company, Limited
公开号:EP0934939A1
公开(公告)日:1999-08-11
[Constitution]
A neuraminic acid compound represented by the formula:
[wherein R1 represents a C1-C4 group which may be substituted with a halogen atom; R2, R3 and R4 may be the same or different and each represents a hydrogen atom or a C3-C25 aliphatic acyl group; and W represents a hydrogen atom or an ester residue, provided that the case where R1 is a methyl group and each of R2, R3, R4 and W is a hydrogen atom is excluded]
or a pharmacologically acceptable salt thereof.
[Effect]
The neuraminic acid compound of the present invention exhibits excellent in vivo sialidase inhibitory activity and is useful as a therapeutic agent or a preventive agent for influenza viral infections.
[组织结构]
一种由式表示的神经氨酸化合物:
[其中 R1 代表可被卤素原子取代的 C1-C4 基团;R2、R3 和 R4 可以相同或不同,且各自代表氢原子或 C3-C25 脂肪酰基;W 代表氢原子或酯残基,但不包括 R1 为甲基且 R2、R3、R4 和 W 中各自为氢原子的情况。]
或其药理上可接受的盐。
效果
本发明的神经氨酸化合物具有优异的体内苷脂酶抑制活性,可用作流感病毒感染的治疗剂或预防剂。