Nonapeptide and decapeptide analogs of LH-RH of the formula
(pyro)Glu-His-V-Ser-W-X-Y-Arg-Pro-Z (I) and the pharmaceutically acceptable salts thereof wherein:
V is tryptophyl, phenylalanyl or 3-(1-naphthyl)-L-alanyl;
W is tyrosyl, phenylalanyl or 3-(1-pentafluorophenyl)-L-alanyl;
X is a D-amino acid residue of the formula:
wherein R is a heterocyclic aryl containing radical selected from radicals represented by the following structural formulas:
wherein A and A' are independently selected from hydrogen, lower alkyl, chlorine, and bromine, and G is selected from oxygen, nitrogen, and sulfur;
Y is leucyl, isoleucyl, nor-leucyl or N-methyl-leucyl;
Z is glycinamide or -NH-R', wherein:
R' is lower alkyl, cycloalkyl, fluoro lower alkyl or O II -NH-C-NH-R2 wherein
R2 is hydrogen or lower alkyl,
are disclosed. These compounds exhibit potent LH-RH agonist properties.
式中的 LH-RH 的非肽和十肽类似物
(pyro)Glu-His-V-Ser-W-X-Y-Arg-Pro-Z (I)及其药学上可接受的盐类 其中:
V 是色
氨酰、苯丙
氨酰或 3-(1-
萘基)-L-丙
氨酰;
W 是酪
氨酰、苯丙
氨酰或 3-(1-
五氟苯基)-L-丙
氨酰;
X 是式中的 D-
氨基酸残基:
其中 R 是杂环芳基,选自下列结构式所代表的基团:
其中 A 和 A'独立地选自氢、低级烷基、
氯和
溴,G 选自氧、氮和
硫;
Y 是亮
氨酰,异亮
氨酰,非亮
氨酰或 N-甲基亮
氨酰;
Z 是甘
氨酰胺或-NH-R',其中:
R' 是低级烷基、环烷基、
氟低级烷基或 O II -NH-C-NH-R2 其中
R2 是氢或低级烷基、
公开了这些化合物。这些化合物具有强效的 LH-RH 激动剂特性。