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Título:	Preparation of penta-azole containing cyclopeptides: challenges in macrocyclization
Autor/a:	Hernández Romero, Delia; Riego, Estela; Francesch, Andrés; Cuevas, Carmen; Albericio Palomera, Fernando; Álvarez Domingo, Mercedes
Otros autores:	Universitat de Barcelona
Abstract:	Herein is described the synthesis of several analogs of the natural product IB-01211 from concatenated azoles, via a biomimetic pathway based on cyclization-oxidation of serine containing peptides combined with the Hantzsch synthesis. The macrocyclization of rigid peptide compounds 1 and 2 to give IB-01211 and its epimer 12b was explored, and the results are compared here to those previously obtained for the macrocyclization of more flexible structures in the syntheses of YM-216391, telomestatin, and IB-01211. Lastly, the preliminary results of anti-tumor activity screening of the synthesized analogs are discussed.
Materia(s):	-Productes naturals -Pèptids -Síntesi orgànica -Compostos heterocíclics -Natural products -Peptides -Organic synthesis -Heterocyclic compounds
Derechos:	(c) Elsevier B.V., 2007
Tipo de documento:	Artículo Artículo - Versión aceptada
Editor:	Elsevier B.V.
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