申请人:Chong Kun Dang Corp.
公开号:US06072051A1
公开(公告)日:2000-06-06
According to the present invention, provided are novel nucleoside derivatives having antiviral activity, in particular, anti-HBV (anti-Hepatitis-B Virus) activity, represented by general formula (I), wherein R.sub.1 represents hydrogen, phosphate, phosphonate, alkyl or acyl; R.sub.2 represents alkoxy or halogen; R.sub.3 represents substituted or non-substituted pyrimidine or purine base; and X represents O, S, SO or SO.sub.2 ; pharmaceutically acceptable salts thereof, and processes thereof. As the compound (I) has two or more asymmetric carbon atoms, all possible stereoisomers and mixtures thereof are included in the scope of the present invention. ##STR1##
根据本发明,提供了具有抗病毒活性的新型核苷衍生物,特别是具有抗HBV(乙型肝炎病毒)活性,其通式(I)表示,其中R.sub.1代表氢、磷酸盐、膦酸盐、烷基或酰基;R.sub.2代表烷氧基或卤素;R.sub.3代表取代或未取代的嘧啶或嘌呤碱基;X代表O、S、SO或SO.sub.2;其药学上可接受的盐以及其制备方法。由于化合物(I)具有两个或更多不对称碳原子,所有可能的立体异构体和其混合物均包括在本发明范围内。