administration. By replacing the carboxylate group in peramivir with a phosphonate group, phosphono-peramivir (6a), the dehydration and deoxy derivatives (7a and 8a) as well as their corresponding monoalkyl esters are prepared from a pivotal intermediate epoxide 12. Among these phosphonate compounds, the dehydration derivative 7a that has a relatively rigid cyclopentene core structure exhibits the
Peramivir是一种有效的
神经氨酸酶(NA)
抑制剂,可通过静脉内给药治疗流感感染。通过用
膦酸酯基,膦酰-peramivir(6a)代替peramivir中的
羧酸酯基,可以从关键的中间
环氧化物12中制备脱
水和脱氧衍
生物(7a和8a)以及它们相应的单烷基酯。在这些
膦酸盐化合物中,脱
水衍
生物7a中,有一个相对刚性的
环戊烯核心结构显示最强抑制活性(IC 50 = 0.3-4.1 nM)的对的野生型人和禽流感病毒(H1N1,
H3N2,H5N1的NA几个,和H7N9),尽管
膦酸酯同类物出乎意料的是,6a的活性低于培拉米韦。从NMR,X射线衍射和分子模型分析推断,6a的较弱的结合亲和力可归因于其
膦酸和3-戊基在NA活性位点上的偏向。化合物7a对H1N1和H5N1病毒的耐
奥司他韦的H275Y菌株具有活性(IC 50 = 73–86 nM)。
膦酸酯单烷基酯(6b,6c,7b,7c,8b和8c)是比其相应的
膦酸(
EC