申请人:——
公开号:US04997648A1
公开(公告)日:1991-03-05
Of therapeutic value in various contexts in which the cyclosporins are used, for example as anti-bacterial agents and particularly as immunosuppressive and anti-inflammatory agents, are acyclic undecapeptides having the formula (I) H--A.sub.1 --A.sub.2 --A.sub.3 --A.sub.4 --A.sub.5 --A.sub.6 --A.sub.7 --A.sub.8 --A.sub.9 --A.sub.10 --A.sub.11 --OH (I) in which A1 is either derived from 2-carboxyazetidine, 2-carboxypyrrolidine or 2-carboxypiperidine, which may optionally be substituted on a ring carbon atom other than that at position 2 by an amino, methylamino, mercapto or hydroxy group and/or by an acyclic aliphatic hydrocarbon group, or is an amino acid residue ##STR1## wherein n is 0, 1 or 2, X represents an amino, methylamino, mercapto or hydroxy group, R represents hydrogen or an acyclic aliphatic hydrocarbon group and R' represents hydrogen or a methyl group; A2 is an amino acid residue ##STR2## wherein R.sub.1 is an acyclic aliphatic hydrocarbon group, for example of 1 to 6 carbon atoms, optionally substituted at the C.sub.1 position of the group R.sub.1 by an amino, methylamino, mercapto or hydroxy group; A.sub.3 is a sarcosine residue; A.sub.4 is an N-methyl-leucine residue; A.sub.5 is a valine residue; A.sub.6 is an N-methyl-leucine residue; A.sub.7 is an alanine residue; A.sub.8 is an alanine residue; Ag is an N-methyl-leucine residue; A.sub.10 is an N-methyl-leucine or sarcosine residue; and A.sub.11 is an N-methylvaline residue; or such an acyclic undecapeptide in which one or more of the terminal amino or methylamino and carboxy groups and any amino, methylamino, mercapto or hydroxy group present in A.sub.1 or A.sub.2 is in derivative form.
在环孢霉素用于抗菌剂、免疫抑制剂和抗炎剂等多种情境中具有治疗价值的无环十一肽具有公式(I)H--A.sub.1 --A.sub.2 --A.sub.3 --A.sub.4 --A.sub.5 --A.sub.6 --A.sub.7 --A.sub.8 --A.sub.9 --A.sub.10 --A.sub.11 --OH(I),其中A1可以是从2-羧基氮杂环丁烷、2-羧基吡咯烷或2-羧基哌啶衍生而来的,该环上的碳原子可以选择性地被氨基、甲基氨基、巯基或羟基取代,或者被无环脂肪烃基取代,或者是一个氨基酸残基##STR1##其中n为0、1或2,X代表氨基、甲基氨基、巯基或羟基,R代表氢或无环脂肪烃基,R'代表氢或甲基;A2是一个氨基酸残基##STR2##其中R.sub.1是一个无环脂肪烃基,例如1到6个碳原子,该基团的C.sub.1位置可以选择性地被氨基、甲基氨基、巯基或羟基取代;A.sub.3是一种肌氨酸残基;A.sub.4是一种N-甲基亮氨酸残基;A.sub.5是一种缬氨酸残基;A.sub.6是一种N-甲基亮氨酸残基;A.sub.7是一种丙氨酸残基;A.sub.8是一种丙氨酸残基;Ag是一种N-甲基亮氨酸残基;A.sub.10是一种N-甲基亮氨酸或肌氨酸残基;A.sub.11是一种N-甲基缬氨酸残基;或者这样一个无环十一肽,在其中,末端氨基或甲基氨基和羧基以及A.sub.1或A.sub.2中存在的任何氨基、甲基氨基、巯基或羟基均为衍生物形式。