申请人:Thrombosis Research Institute
公开号:US05648338A1
公开(公告)日:1997-07-15
Peptides which act as inhibitors or substrates of thrombin are derived from the formula: D-Phe-Pro-Arg or its analogues, wherein Phe is substituted by (a), wherein Ar.sub.1 or Ar.sub.2 are the same or different and are selected from the group consisting of phenyl, thienyl, pyridyl, naphthyl, thionaphtyl, indolyl and saturated groups corresponding to these, optionally substituted by up to three groups selected from C.sub.1 -C.sub.3 alkyl and C.sub.1 -C.sub.3 alkoxy, L.sub.1 and L.sub.2 are the same of different and are selected from the group consisting of CH.sub.2, C.sub.2 --C.sub.2, O-CH.sub.2, S-CH.sub.2, Ar-L taken together optionally means H, diphenyl-methyl, fluorenyl or saturated groups corresponding to these, but one of the Ar-L cannot be H when the other [CH.sub.2 ].sub.n -Q, (c) where Q=H, amino, amidino, imidazole, guanidino or isothioureido and n=1-5, preferably 3-5, or C.sub.3 -C.sub.9 alkyl and C.sub.5 -C.sub.10 aryl or alkylaryl optionally substituted by up to three groups selected from hydroxy and C.sub.1 -C.sub.4 alkoxy; Z=CN, COR.sub.1, (d) or (e), where R.sub.1 =H, OH, CH.sub.2 Cl, CH.sub.2 --C.sub.2 --CO--pip, CF.sub.2 --CF.sub.2 --CO--pip, (f), (g), CH.sub.2 --C.sub.2 --CO--Pro--NHEt, CF.sub.2 --CF.sub.2 --CO--Pro--NHEt or a chromophoric group e.g. pHA, MCA, R.sub.2 and R.sub.3 are the same or different and are selected from the group consisting of OH, OR.sub.6 and NR.sub.6 R.sub.7, or R.sub.2 and R.sub.3 taken together represent the residue of a diol; where R.sub.6 and R.sub.7, which are the same or different, are C.sub.1 -C.sub.10 alkyl, phenyl or C.sub.6 -C.sub.10 arylalkyl, R.sub.4 and R.sub.5 are the same or different and are selected from R.sub.2, R.sub.3, Gly-pip, Ala-pip or Gly-Pro-NHEt.
抑制或作为凝血酶底物的肽来自于公式:D-Phe-Pro-Arg或其类似物,其中Phe被(a)代替,其中Ar.sub.1或Ar.sub.2相同或不同,选自苯基,噻吩基,吡啶基,萘基,噻萘基,吲哚基和相应饱和基团,可选择性地取代最多三个来自C.sub.1-C.sub.3烷基和C.sub.1-C.sub.3烷氧基的基团,L.sub.1和L.sub.2相同或不同,选自CH.sub.2,C.sub.2--C.sub.2,O-CH.sub.2,S-CH.sub.2,Ar-L共同取决于H,二苯甲基,芴基或相应饱和基团,但当另一个[CH.sub.2].sub.n-Q时,其中一个Ar-L不能为H,(c),其中Q=H,氨基,酰胺基,咪唑基,胍基或异硫脲基,n=1-5,优选3-5,或C.sub.3-C.sub.9烷基和C.sub.5-C.sub.10芳基或烷基芳基,可选择性地取代最多三个羟基和C.sub.1-C.sub.4烷氧基的基团;Z=CN,COR.sub.1,(d)或(e),其中R.sub.1=H,OH,CH.sub.2Cl,CH.sub.2--C.sub.2--CO--pip,CF.sub.2--CF.sub.2--CO--pip,(f),(g),CH.sub.2--C.sub.2--CO--Pro--NHEt,CF.sub.2--CF.sub.2--CO--Pro--NHEt或色团基,例如pHA,MCA,R.sub.2和R.sub.3相同或不同,选自OH,OR.sub.6和NR.sub.6R.sub.7,或R.sub.2和R.sub.3共同代表二醇残基;其中R.sub.6和R.sub.7,相同或不同,为C.sub.1-C.sub.10烷基,苯基或C.sub.6-C.sub.10芳基烷基,R.sub.4和R.sub.5相同或不同,选自R.sub.2,R.sub.3,Gly-pip,Ala-pip或Gly-Pro-NHEt。