1. Pyrimidine nucleosides exhibiting anti-viral and anti-tumor effects have the formula
wherein
A is OR', SR', NR3R4 or NHacyl wherein R' and R' are the same or different and are hydrogen, lower alkyl of 1 to 7 carbon atoms, aralkyl, or aryl;
NHacyl is alkanoyl or aroyl amide;
B is oxygen or sulfur;
X is halogen, alkylsulfonyl or arylsulfonyl;
Y is halogen, amino, monoalkyl- or monoaralkylamino, dialkylamino, aminomethyl, hydroxymethyl, lower alkyl, aryl, aralkyl, vinyl and substituted vinyl or ethynyl and substituted ethynyl;
Z is methyne or nitrogen;
R1 and R2 are the same or different and are hydrogen acyl or aroyl.
1.具有抗病毒和抗肿瘤作用的
嘧啶核苷的
化学式为
其中
A是OR'、SR'、NR3R4或NHacyl,其中R'和R'相同或不同,并且是氢、1至7个碳原子的低级烷基、芳基或芳基;
NHacyl 是烷酰基或芳基酰胺;
B 是氧或
硫;
X 是卤素、烷基磺酰基或芳基磺酰基;
Y 是卤素、
氨基、单烷基或单芳基
氨基、二烷基
氨基、
氨甲基、羟甲基、低级烷基、芳基、芳烷基、
乙烯基和取代
乙烯基或
乙炔基和取代
乙炔基;
Z 是甲基或氮;
R1 和 R2 相同或不同,并且是氢酰基或芳基。