申请人:SANKYO COMPANY, LIMITED
公开号:US20020137791A1
公开(公告)日:2002-09-26
Compounds of formula (I) or their salts or esters:
1
[wherein R
1
is alkyl or haloalkyl; R
2
and R
3
each represents hydrogen or aliphatic acyl; X is hydroxy, halogen, alkoxy, or a group of formula R
a
O—, where R
a
is aliphatic acyl; Y is a group of formula R
b
R
c
N— or R
b
R
c
N—O—, where R
b
and R
c
each is hydrogen or alkyl; and Z is oxygen or sulfur] have excellent sialidase inhibitory activity and are therefore useful for the treatment and prevention of influenza and other viral diseases where the replication of the virus is susceptible to sialidase inhibitors.
式(I)化合物或其盐或酯:
1
其中 R
1
是烷基或卤代烷基;R
2
和 R
3
分别代表氢或脂族酰基;X 是羟基、卤素、烷氧基或式 R
a
O-,其中 R
a
是脂肪酰基;Y 是式 R
b
R
c
N- 或 R
b
R
c
N-O- ,其中 R
b
和 R
c
均为氢或烷基;Z 为氧或硫]具有极佳的硅糖苷酶抑制活性,因此可用于治疗和预防流感及其他病毒复制易受硅糖苷酶抑制剂影响的病毒性疾病。