Process for the preparation of cyclo(Asp-DPhe-NMeVal-Arg-Gly)

   
   

Process for the preparation of the cyclic pentapeptide cyclo(Arg-Gly-Asp-DPhe-NMeVal) by cyclization of a linear pentapeptide selected from the group consisting of H-Arg(Pbf)-Gly-Asp(OBzl)-DPhe-NMeVal-OH, H-Gly-Asp(OBzl)-DPhe-NMeVal-Arg(Pbf)-OH, H-Asp(OBzl)-DPhe-NMeVal-Arg(Pbf)-Gly-OH, H-DPhe-NMeVal-Arg(Pbf)-Gly-Asp(OBzl)-OH or H-NMeVal-Arg(Pbf)-Gly-Asp (OBzl)-DPhe-OH, subsequent protective group removal and, if appropriate, further conversion into its physiologically acceptable salts.

 
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