The present invention relates to novel compounds of formula (I) which has inhibitory activities against human immunodeficiency virus ("HIV") protease, a process for the preparation thereof, and compositions for prevention or treatment of AIDS by HIV infection comprising the above compounds as active ingredients. ##STR1## wherein: R.sup.1 is an aromatic group, a nitrogen-containing aromatic group, C.sub.1-4 alkyl group optionally substituted with an aromatic group or a nitrogen-containing aromatic group, C.sub.1-4 alkoxy group optionally substituted with an aromatic group or a nitrogen-containing aromatic group; R.sup.2 is an amino acid residue or a C.sub.1-8 alkyl group substituted with a C.sub.1-4 alkylsulfonyl group; R.sup.3 is a C.sub.1-4 alkyl group optionally substituted with an aromatic group; R.sup.4 is hydrogen or a C.sub.1-2 alkyl group; R.sup.5 is a C.sub.1-10 alkyl group optionally substituted with an aromatic group; and n is 1 or 2.
本发明涉及一种具有对人类免疫缺陷病毒(“HIV”)
蛋白酶抑制活性的化合物(I)的新型化合物,以及其制备方法,以及包含上述化合物作为活性成分的用于预防或治疗艾滋病的组合物。其中:R.sup.1是芳香族基,含氮芳香族基,C.sub.1-4烷基(可选地取代芳香族基或含氮芳香族基),或C.sub.1-4烷氧基(可选地取代芳香族基或含氮芳香族基);R.sup.2是
氨基酸残基或C.sub.1-8烷基(取代有C.sub.1-4烷基磺酰基);R.sup.3是C.sub.1-4烷基(可选地取代芳香族基);R.sup.4是氢或C.sub.1-2烷基;R.sup.5是C.sub.1-10烷基(可选地取代芳香族基);n为1或2。