申请人:Advanced Life Sciences, Inc.
公开号:US20020068757A1
公开(公告)日:2002-06-06
Substantially purified antiviral biflavanoids robustaflavone, hinokiflavone, amentoflavone, agathisflavone, volkensiflavone, morelloflavone, rhusflavanone, succedaneaflavanone, GB-1a, and GB-2a are provided. Antiviral biflavanoid derivatives and salt forms thereof, e.g., robustaflavone tetrasulfate potassium salt, and methods for preparing the same are also disclosed. Pharmaceutical compositions which include the antiviral biflavanoids, derivatives or salts thereof are also provided alone or in combination with at least one antiviral agent such as 3TC. Also disclosed is an improved method for obtaining substantially pure robustaflavone from plant material. The biflavanoid compounds, derivatives or salts thereof of the invention may be used in a method for treating and/or preventing viral infections caused by viral agents such as influenza, e.g., influenza A and B; hepatitis, e.g., hepatitis B; human immunodeficiency virus, e.g., HIV-1; Herpes viruses (HSV-1 and HSV-2); Varicella Zoster virus (VZV); and measles. For instance, semi-synthetic hexa-O-acetate and hexa-O-methyl ether derivatives of robustaflavone have been found to be effective in a method for treating or preventing hepatitis B viral infections. Compositions which include these robustaflavone derivatives along with methods for preparing and using the same are also provided. These compositions may be used alone or in combination with at least one antiviral agent such as 3TC.
本研究提供了实质上纯化的抗病毒双黄酮类物质--强力黄酮、桧黄酮、芒果黄酮、茄黄酮、伏肯黄酮、更萝黄酮、胡黄酮、琥珀黄酮、GB-1a 和 GB-2a。此外,还公开了抗病毒双黄烷衍生物及其盐形式,例如强力黄酮四硫酸钾盐,以及制备方法。还提供了包括抗病毒双黄酮类化合物、衍生物或其盐类的药物组合物,这些药物组合物可单独使用,也可与至少一种抗病毒药物如 3TC 结合使用。此外,还公开了一种从植物材料中获得高纯度强力黄酮的改进方法。本发明的双黄烷化合物、衍生物或其盐类可用于治疗和/或预防由病毒病原体引起的病毒感染,如流感,如甲型和乙型流感;肝炎,如乙型肝炎;人类免疫缺陷病毒,如HIV-1;疱疹病毒(HSV-1和HSV-2);水痘带状疱疹病毒(VZV);以及麻疹。例如,在治疗或预防乙型肝炎病毒感染的方法中,发现了半合成的六-O-乙酸酯和六-O-甲醚衍生物强力黄酮。此外,还提供了包括这些强力黄酮衍生物的组合物以及制备和使用这些组合物的方法。这些组合物可单独使用,也可与至少一种抗病毒药物如 3TC 结合使用。