This invention relates to novel substituted 1,3-oxathiolanes and substituted 1,3-dithiolanes or pharmaceutically acceptable salts and esters thereof, of the formula: ##STR1## wherein X is S, S.dbd.O, or SO.sub.2 ; Y is O, S, S.dbd.O, or SO.sub.2 ; R.sub.1 is hydrogen, trisubstituted silyl, C.sub.1-6 alkyl, aralkyl, or C.sub.1-6 acyl, and R.sub.2 is a pyrimidine base or an analogue or derivative thereof. This invention also relates to processes for preparing these compounds, intermediates useful in their preparation, to pharmaceutical compositions containing them and to the use of these compounds as antiviral agents.
这项发明涉及新颖的取代1,3-噻烷和取代1,3-二
硫烷或其药用盐和
酯,
化学式如下:##
STR1## 其中X为S、S.dbd.O或SO.sub.2;Y为O、S、S.dbd.O或SO.sub.2;R.sub.1为
氢、三取代
硅基、C.sub.1-6烷基、芳基烷基或C.sub.1-6酰基,R.sub.2为
嘧啶碱基或其类似物或衍
生物。这项发明还涉及制备这些化合物的方法,用于制备它们的
中间体,含有它们的药物组合物以及将这些化合物用作抗病毒剂的用途。