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    • 8. 发明授权
    • Growth hormone releasing factor analogs
    • 生长激素释放因子类似物
    • US4734399A
    • 1988-03-29
    • US922572
    • 1986-10-23
    • Arthur M. FelixEdgar P. HeimerThomas F. Mowles
    • Arthur M. FelixEdgar P. HeimerThomas F. Mowles
    • C12N15/09A61K38/00A61K38/04A61P15/00C07K14/00C07K14/575C07K14/60C12P21/02A61K37/43C07K7/10
    • C07K14/60A61K38/00Y10S930/12
    • The invention is directed to analogs of GRF or fragments thereof wherein the fragment is reduced in number by one to fifteen amino acids from the carboxyl end wherein the analogs have the formula: ##STR1## wherein R is desNH.sub.2 -Tyr, Tyr, D-Tyr, Ac-Tyr, His or C.sup..alpha. -Methyl-Tyr; R.sub.1 is Ala, N-Methyl-D-Ala or D-Ala; R.sub.2 is Lys, Ala, Leu, Val or Ile; R.sub.3 is Ala, Leu, Val, Ile, Nle, Nval, .beta.-Ala or .alpha.-Aib; R.sub.4 is Lys, Ala, Leu, Val or Ile; R.sub.5 is Met, Leu, Nle or Ile; R.sub.6 is Asn or Ser; X is hydrogen or --COR.sub.7 ; R.sub.7 is hydrogen, C.sub.1-4 alkyl or halo(C.sub.1-4)alkyl; Y is --OR.sub.8 or --NR.sub.9 R.sub.10 ; R.sub.8 is hydrogen or C.sub.1-5 -alkyl; R.sub.9 and R.sub.10 independently equal hydrogen, C.sub.1-7 alkyl, C.sub.2-4 alkenyl or halo(C.sub.1-4)alkyl; and pharmaceutically acceptable acid or base addition salts thereof. The invention is further directed to pharmaceutical compositions and to methods for treating growth hormone deficiencies.
    • 本发明涉及GRF或其片段的类似物,其中该片段从羧基末端数目减少一至十五个氨基酸,其中类似物具有下列结构式: + TR < 其中R是desNH 2 -Tyr,Tyr,D-Tyr,Ac-Tyr,His或Cα-甲基-Tyr; R1是Ala,N-甲基-D-Ala或D-Ala; R2是Lys,Ala,Leu,Val或Ile; R3是Ala,Leu,Val,Ile,Nle,Nval,β-Ala或α-Aib; R4是Lys,Ala,Leu,Val或Ile; R5是Met,Leu,Nle或Ile; R6为Asn或Ser; X是氢或-COR 7; R7是氢,C1-4烷基或卤代(C1-4)烷基; Y是-OR8或-NR9R10; R8是氢或C1-5烷基; R9和R10独立地为氢,C1-7烷基,C2-4烯基或卤代(C1-4)烷基; 及其药学上可接受的酸或碱加成盐。 本发明还涉及药物组合物和治疗生长激素缺乏症的方法。