New cyclotetrapeptides of formula (I) or their pharmaceutically acceptable salts,
cyclo [Arg-Asp-(beta-Lactam)]
(I)
wherein (beta-Lactam) is a biradical of the formula (II)
wherein the terminal NH group of the (beta-Lactam) is attached to the α-carbonyl group of the aspartic residue (Asp), and the terminal carbonyl group of the (beta-Lactam) is attached to the α-amino group the arginine residue (Arg); processes for their preparation, and pharmaceutical compositions containing them, as well as the said cyclotetrapeptides for use in human and animal therapy.
新的环四肽化合物的
化学式(I)或其药用盐,环[精-
天冬氨酸-(β-内酰胺)](I),其中(β-内酰胺)是
化学式(II)的双自由基,其中(β-内酰胺)的末端NH基团连接到
天冬氨酸残基(Asp)的α-羰基团,(β-内酰胺)的末端羰基团连接到精
氨酸残基(Arg)的α-
氨基团;它们的制备方法,含有它们的药物组合物,以及所述环四肽用于人类和动物治疗的用途。