Novel antiviral compounds of the formula
wherein R1 is hydrogen, R2 is hydrogen, fluoro, methoxy or methylthio and R3 is hydrogen, hydroxy or mercapto; with the provisos that when R3 is hydrogen then R2 is methoxy or methylthio and that when R3 is hydroxy then R2 is fluoro, methoxy or methylthio; and with the further proviso that R1 can also be methoxy or fluoro when R2 is methoxy or fluoro; and physiologically acceptable salts or optical isomers thereof, methods for their preparation, pharmaceutical compositions containing the compounds, and use of said compounds in the treatment of virus infections.
式中的新型抗病毒化合物
其中 R1 是氢,R2 是氢、
氟、甲氧基或甲
硫基,R3 是氢、羟基或巯基;但书是当 R3 是氢时,R2 是甲氧基或甲
硫基,当 R3 是羟基时,R2 是
氟、甲氧基或甲
硫基;以及其生理上可接受的盐或光学异构体、其制备方法、含有该化合物的药物组合物和所述化合物在治疗病毒感染中的用途。