Antiviral peptides of the formula ##STR1## in which W is an amino protecting group, A,B,D,E and L each independently is a direct bond, or a radical of the formula ##STR2## R.sup.1 and R.sup.2 each independently is cycloakyl or optionally substituted alkyl or alkenyl, Y is --NHR.sup.10, and R.sup.10 is cycloalkyl or optionally substituted alkyl, and their physiologically acceptable salts. The formula includes a 2-amino-2-methylpropionic acid (AiB) residue, which may optionally be protected, as the N-terminal .alpha.-amino acid. The peptides are expected to be useful as medicaments, in particular as antiviral agents in human and veterinary medicine. The peptides are shown to inhibit aspartyl proteases including human immunodeficiency virus (HIV) protease, to have anti-HIV activity and to inhibit the proliferation of HIV in HIV-I infected human lymphocytes. The peptides are expected to be useful in treating patients having HIV related disorders such as ARC and AIDS.
公式为 ##STR1## 的抗病毒肽,其中W是
氨基保护基,A、B、D、E和L各自独立地是直接键或式中的基团 ##STR2## R1和R2各自独立地是环烷基或可选取代的烷基或烯基,Y为--NHR10,R10为环烷基或可选取代的烷基,并且它们的生理上可接受的盐。该公式包括2-
氨基-2-甲基
丙酸(AiB)残基,可选择性地作为N-末端
α-氨基酸进行保护。预计这些肽将用作药物,特别是作为人类和兽医医学中的抗病毒剂。已经证明这些肽能够抑制
天冬氨酸蛋白酶,包括人类免疫缺陷病毒(HIV)
蛋白酶,具有抗HIV活性并抑制HIV在HIV-I感染的人类淋巴细胞中的增殖。预计这些肽将有助于治疗患有HIV相关疾病,如ARC和AIDS的患者。