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    • 4. 发明授权
    • Cyclic anti-aggregatory peptides
    • US5643872A
    • 1997-07-01
    • US296621
    • 1994-08-26
    • Fadia El-Fehail AliJames Martin Samanen
    • Fadia El-Fehail AliJames Martin Samanen
    • A61K38/00C07K5/09C07K5/10C07K5/103C07K5/11C07K5/12C07K7/06C07K7/64C07K14/75
    • C07K7/06C07K14/75C07K5/0817C07K5/1008C07K5/1013C07K5/1019C07K5/123C07K7/64A61K38/00
    • This invention relates to compounds of the formula: ##STR1## wherein: A' is absent, Asn, Gln, Ala or Abu;A is absent or a D- or L-amino acid chosen from Arg, HArg, (Me.sub.2)Arg, (Et.sub.2)Arg, Abu, Ala, Gly, His, Lys, or an .alpha.-R' substituted derivative thereof, Dtc, Tpr and Pro;B is a D- or L-amino acid chosen from Arg, HArg, NArg, (Me.sub.2)Arg, (Et.sub.2)Arg and Lys or an .alpha.-R' substituted derivative thereof;Q is absent or a D or L amino acid chosen from Tyr, (Alk)Tyr, Phe, (4'W)Phe, HPhe, Phg, Pro, Trp, His, Ser, (Alk)Ser, Thr, (Alk)Thr, (Alk)Cys, (Alk)Pen, Ala, Val, Nva, Met, Leu, Ile, Nle and Nal, or an .alpha.-R' substituted derivative thereof;M is absent or Gly or a D- or L-amino acid chosen from Glu, Phe, Pro, Lys and Ser or, provided n is 1, B-Gly-Glu-Q;W is halogen or Alk;R' is Alk or PhCH.sub.2 ; ##STR2## wherein Z.sub.1 and Z.sub.2 are linked via a covalent bond between L.sup.1 and L.sup.2 ; or Z.sub.1 and Z.sub.2 are, taken together, a covalent bond between the amino terminal residue and the carboxy terminal residue;L.sup.1 and L.sup.2 are --S-- or --(CH.sub.2).sub.p --;X is R.sub.4 R.sub.5 N or H;Y is H, CONR.sub.1 R.sub.2 or CO.sub.2 R.sub.2 ;R.sub.1 and R.sub.2 are H, Alk or (CH.sub.2).sub.p Ar;R.sub.3 and R.sub.3' are H, Alk, (CH.sub.2).sub.p Ar or taken together are --(CH.sub.2).sub.4 -- or --(CH.sub.2).sub.5 --;R.sub.4 is H or Alk;R.sub.5 is R.sub.11, R.sub.11 CO, R.sub.11 OCO, R.sub.11 OCH(R.sub.11')CO, R.sub.11 NHCH(R.sub.11')CO, R.sub.11 SCH(R.sub.11')CO, R.sub.11 SO.sub.2 or R.sub.11 SO;R.sub.6 is Alk, OAlk, halogen or X;R.sub.7 is H, Alk, OAlk, halogen or Y;R.sub.8 and R.sub.8' are H, Alk, (CH.sub.2).sub.p Ph, (CH.sub.2).sub.p Nph or taken together are --(CH.sub.2).sub.4 -- or --(CH.sub.2).sub.5 --;R.sub.9 is H, Alk or Y;R.sub.10 is H or Alk;R.sub.11 and R.sub.11' are H, C.sub.1-5 alkyl, C.sub.3-7 cycloalkyl, Ar, Ar--C.sub.1-5 alkyl, Ar--C.sub.3-7 cycloalkyl;Ar is phenyl or phenyl substituted by one or two C.sub.1-5 alkyl, trifluoromethyl, hydroxy, C.sub.1-5 alkoxy or halogen groups;n is 1 or 2;q is 0 or 1; andp is 0, 1, 2 or 3;or a pharmaceutically acceptable salt thereof;which are effective for inhibiting platelet aggregation, pharmaceutical compositions for effecting such activity, a method for inhibiting platelet aggregation and clot formation in a mammal, and a method for inhibiting reocclusion of a blood vessel following fibrinolytic therapy.