Synthesis of glycopeptide derivatives containing the 2-acetamido-N-(L-aspart-4-oyl)-2-deoxy-β-D-glucopyranosylamine linkage and having the amino acid sequences 32–34, 33–35,33–37, and 33–38 of bovine ribonuclease

Add time:09/07/2019    Source:sciencedirect.com

The synthesis is described of the glycotripeptide derivatives 2-acetamido-3,4,6-tri-O-acetyl-N-[N-(benzyloxycarbonyl)-L--seryl-L-nitroarginyl-L-aspart-4-oyl]-2-deoxy-β-D-glucopyranosylamine, 2-acetamido-3,4,6-tri-O-acetyl-N-[N-(benzyloxycarbonyl)-L-seryl-L-nitroarginyl-L-aspart-1-oyl-(1-p-nitrobenzyl ester)-4-oyl]-2-deoxy-β-D-glucopyranosylamine, and 2-acetamido-3,4,6-tri-O-acetyl-N-[N-(benzyloxycarbonyl)-L-nitroarginyl-L-aspart-1-oyl-(L-leucine methyl ester)-4-oyl]-2-deoxy-β-D-glucopyranosylamine, and of the glycopentapeptide and glycohexapeptide derivatives 2-acetamido-3,4,6-tri-O-acetyl-N-[N-(benzyloxycarbonyl)-L-nitroarginyl-L-aspart-1-oyl-(L-leucyl-L-threonyl-threonyl-Nε-tosyl-L-lysine-(p-nitrobenzyl ester)-4-oyl]-2-deoxy-β-D-glycopyranosylamine and 2-acetamido-3,4,6-tri-O-acetyl-N-[N-(benzyloxycarbonyl)-L-nitroarginyl-L-aspart-1-oyl-(L-leucyl-L-threonyl-Nε-tosyl-L-lysyl-L-aspartic 1,4-di-p-nitrobenzyl ester)-4-oyl]-2-deoxy-β-D-glucopyranosylamine.

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