The present invention relates to compounds of formulae (I) and (II) which are pyran-2-ones, 5,6-dihydro-pyran-2-ones, 4-hydroxy-benzopyran-2-ones, 4-hydroxy-cycloalkyl\x9bb!pyran-2-ones, and derivatives thereof, useful for inhibiting a retrovirus in a mammalian cell infected with said retrovirus, wherein R.sub.10 and R.sub.20 taken together are formulae (III) and (IV). ##STR1##
                            本发明涉及式(I)和(II)的化合物,它们是
吡喃-2-酮、5,6-二氢
吡喃-2-酮、
4-羟基苯并
吡喃-2-酮、
4-羟基环烷基
吡喃-2-酮及其衍
生物,用于抑制哺乳动物细胞中感染了逆转录病毒的逆转录病毒,其中R.sub.10和R.sub.20共同取为化合物(III)和(IV)的式。