Nucleotide analog composition and synthesis method
    7.
    发明授权
    Nucleotide analog composition and synthesis method 失效
    核苷酸类似物组合物及其合成方法

    公开(公告)号:US5935946A

    公开(公告)日:1999-08-10

    申请号:US900752

    申请日:1997-07-25

    CPC分类号: C07D473/34 C07F9/65616

    摘要: The invention provides a composition comprising bis(POC)PMPA and fumaric acid (1:1). The composition is useful as an intermediate for the preparation of antiviral compounds, or is useful for administration to patients for antiviral therapy or prophylaxis. The composition is particularly useful when administered orally. The invention also provides methods to make PMPA and intermediates in PMPA synthesis. Embodiments include lithium t-butoxide, 9-(2-hydroxypropyl) adenine and diethyl p-toluenesulfonylmethoxyphosphonate in an organic solvent such as DMF. The reaction results in diethyl PMPA preparations containing an improved by-product profile compared to diethyl PMPA made by prior methods.

    摘要翻译: 本发明提供包含双(POC)PMPA和富马酸(1:1)的组合物。 该组合物可用作制备抗病毒化合物的中间体,或可用于给患者施用抗病毒治疗或预防。 当口服给药时,组合物特别有用。 本发明还提供了在PMPA合成中制备PMPA和中间体的方法。 实施方案包括在有机溶剂如DMF中的叔丁醇锂,9-(2-羟丙基)腺嘌呤和对甲苯磺酰基甲氧基膦酸二乙酯。 与通过现有方法制备的二乙基PMPA相比,反应产生含有改进的副产物谱图的二乙基PMPA制剂。