1994
DOI: 10.1002/chin.199414266
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ChemInform Abstract: The 2,2,4,6,7‐Pentamethyldihydrobenzofuran‐5‐sulfonyl Group (Pbf) as Arginine Side Chain Protectant.

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Cited by 2 publications
(3 citation statements)
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“…To address this limitation, and improve the viability of the glycosylamino acid building block approach for the synthesis of Arg-N-linked glycopeptides, we reported the synthesis of Arg-Nω-rhamnosylated glycosylamino acid building blocks bearing the electron withdrawing Nω'-2,2,4,6,7-pentamethyldihydrobenzofuran-5-sulfonyl (Pbf) side chain protecting group, which is commonly used for the protection of the standard guanidine side chain of Arg during Fmoc-SPPS. 24 Arg-Nω-rhamnosylated glycosylamino acids with the side chain Pbf protection were demonstrated to couple efficiently to resin-bound peptides and did not undergo unproductive lactamization. Herein, we report the efficient synthesis of an analogous glycosylamino acid bulding block 1, for the introduction of the GlcNAc-β-Arg modification, and demonstrate its effective use for the synthesis of biologically relevant death domain-derived glycopeptides through Fmoc-SPPS.…”
Section: Introductionmentioning
confidence: 99%
“…To address this limitation, and improve the viability of the glycosylamino acid building block approach for the synthesis of Arg-N-linked glycopeptides, we reported the synthesis of Arg-Nω-rhamnosylated glycosylamino acid building blocks bearing the electron withdrawing Nω'-2,2,4,6,7-pentamethyldihydrobenzofuran-5-sulfonyl (Pbf) side chain protecting group, which is commonly used for the protection of the standard guanidine side chain of Arg during Fmoc-SPPS. 24 Arg-Nω-rhamnosylated glycosylamino acids with the side chain Pbf protection were demonstrated to couple efficiently to resin-bound peptides and did not undergo unproductive lactamization. Herein, we report the efficient synthesis of an analogous glycosylamino acid bulding block 1, for the introduction of the GlcNAc-β-Arg modification, and demonstrate its effective use for the synthesis of biologically relevant death domain-derived glycopeptides through Fmoc-SPPS.…”
Section: Introductionmentioning
confidence: 99%
“…Fünfring überlappen die nicht-bindenden Orbitale des Sauerstoffatoms besser mit den π-Orbitalen des aromatischen Systems und stabilisieren somit das Kation nach der Abspaltung effektiver. [200] Die Methylgruppen am Aromaten erhöhen die Elektronendichte literaturbekannten Synthesen [201][202] dargestellt wurde . werden.…”
Section: Synthese Von N-(s-methylthiocarbonyl)-l-valin-tert-butyleste...unclassified
“…Um die Eignung der Pbf-Gruppe für die geplante Syntheseroute zu testen, wurde die Pbf-Entschützung exemplarisch mit dem N α -Cbz-N ζ -Pbf-L-Arginin 176 durchgeführt. Die Pbf-geschützte Aminosäure 176 wurde in einem Gemisch aus Trifluoressigsäure undWasser (8:2)[200] über 2 d umgesetzt und die Reaktion mittels LC-MS-Analytik verfolgt. Die Pbf-entschützte Aminosäure 175 wurde als Hauptkomponente identifiziert.…”
unclassified