Synthesis of glutaryl-containing derivatives of GRGD and KRGD peptides
New derivatives of tetrapeptides GRGD (Gly-Arg(Pbf)-Gly-Asp(OMe)-OMe) and KRGD (Boc-Lys-Arg(Pbf)-Gly-Asp(OMe)-OMe) containing a glutaric acid fragment as a linker were synthesized. The linker provides the possibility for binding these derivatives to other biologically active molecules or nanoparticles.
Process for preparing diketopiperazine derivatives
A diketopiperazine derivative is prepared by reacting chloroacetylaspartic acid with ammonia water, diesterifying the resulting glycyl-aspartic acid with an alkanol, and then cyclizing the diester in neutral or weakly basic water or in an alkanol-water solvent mixture.
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(2008/06/13)
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