申请人:BEECHAM GROUP PLC
公开号:EP0319228A2
公开(公告)日:1989-06-07
Compounds of formula (I), and pharmaceutically acceptable salts thereof
wherein
R₁ is hydroxy, amino, chloro or OR₇
wherein
R₇ is C₁₋₆ alkyl, phenyl or phenyl C₁₋₂ alkyl either of which phenyl moieties may be substituted by one or two substituents selected from halo, C₁₋₄ alkyl or C₁₋₄ alkoxy;
R₂ is amino or, when R₁ is hydroxy or amino, R₂ may also be hydrogen;
R₃ is hydrogen, hydroxymethyl or acyloxymethyl;
R₄ is a group of formula:
R₅ and R₆ are independently selected from hydrogen, C₁₋₆ alkyl and optionally substituted phenyl; or
R₃ and R₄ together are:
wherein
R₆ is as defined above;
having antiviral activity, to processes for their preparation and their use as pharmaceuticals.
式(I)化合物及其药学上可接受的盐类
其中
R₁ 是羟基、氨基、氯或 OR₇
其中
R₇ 是 C₁₋₆烷基、苯基或苯基 C₁₋₂烷基,其中任一苯基可被一个或两个选自卤代、C₁₋₄ 烷基或 C₁₋₄ 烷氧基的取代基取代;
R₂ 是氨基,或者当 R₁ 是羟基或氨基时,R₂ 也可以是氢;
R₃ 是氢、羟甲基或酰氧基甲基;
R₄ 是式中的一个基团:
R₅ 和 R₆ 独立选自氢、C₁₋₆ 烷基和任选取代的苯基;或
R₃ 和 R₄ 合在一起为
其中
R₆ 如上文所定义;
具有抗病毒活性,以及其制备工艺和药物用途。