申请人:Rhone-Poulenc Industries
公开号:US04742048A1
公开(公告)日:1988-05-03
Tetrapeptides and pentapeptides of the formula: ##STR1## wherein R represents hydrogen or a fatty acid residue, R.sub.1 represents hydroxy, amino, alkoxy of 1 to 4 carbon atoms, optionally substituted by phenyl or nitrophenyl, one of R.sub.2 and R.sub.4 represents hydrogen, carboxy, carbamoyl, alkoxycarbonyl of 2 to 5 carbon atoms, optionally substituted by phenyl or nitrophenyl, or a N-carbonylglycine or N-carbonyl-D-alanine radical optionally esterified by alkyl of 1 to 4 carbon atoms (which is optionally substituted by phenyl or nitrophenyl) and the other symbol represents hydrogen, carboxy, carbamoyl, or alkoxycarbonyl fof 2 to 5 carbon atoms, optionally substituted by phenyl or nitrophenyl, and R.sub.3 represents hydrogen, a fatty acid residue or a glycyl or D-alanyl moiety in which the amine group is optionally substituted by a fatty acid residue, it being understood that R.sub.2 and R.sub.4 cannot simutaneously represent hydrogen, that at least one of R.sub.2, R.sub.3 and R.sub.4 represents a glycyl or D-alanyl moiety, that at least one of R and R.sub.3 represents or contains a fatty acid residue, and that the alanine moiety is in the L form, the glutamic acid moiety or its derivatives are in the D form, the lysine moiety or its derivatives, when one of the symbols R.sub.2 and R.sub.4 represents a hydrogen atom, are in the L form, and the 2,6-diaminopimelic acid moiety or fits derivatives, when R.sub.2 and R.sub.4 represent a carboxy, carbamoyl or alkoxycarbonyl radical, are in the D,D L,L,D,D/L,L (racemic) or D,L (meso) form, and salts thereof possess immunostimulant activity.
该公式的四肽和五肽:##STR1## 其中R代表氢或
脂肪酸残基,R.sub.1代表羟基,
氨基,1至4个碳原子的烷氧基,可选择地被苯基或
硝基苯基取代,R.sub.2和R.sub.4中的一个代表氢,羧基,
氨甲酰基,2至5个碳原子的烷氧羰基,可选择地被苯基或
硝基苯基取代,或N-羧甘
氨酸或N-羧基-
D-丙氨酸基团,可选择地被1至4个碳原子的烷基(可被苯基或
硝基苯基取代)酯化,而另一个符号代表氢,羧基,
氨甲酰基或2至5个碳原子的烷氧羰基,可选择地被苯基或
硝基苯基取代,R.sub.3代表氢,
脂肪酸残基或甘
氨酰或D-丙
氨酰基团,在其中
氨基团可选择地被
脂肪酸残基取代,应理解R.sub.2和R.sub.4不能同时代表氢,至少有一个R.sub.2、R.sub.3和R.sub.4代表甘
氨酰或D-丙
氨酰基团,至少有一个R和R.sub.3代表或包含
脂肪酸残基,并且丙
氨酸基团处于L形式,谷
氨酸基团或其衍
生物处于D形式,赖
氨酸基团或其衍
生物(当R.sub.2和R.sub.4中的一个代表氢原子时)处于L形式,
2,6-二氨基庚二酸基团或其衍
生物(当R.sub.2和R.sub.4代表羧基,
氨甲酰基或烷氧羰基时)处于D,D L,L,D,D / L,L(外消旋)或D,L(中性)形式,并且其盐具有免疫刺激活性。