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Determination of the N-Terminal residue of the peptide in ristocetin a and ristomycin a by reductive isopropylation.

✍ Scribed by Constance M. Harris; Thomas M. Harris

Publisher: Elsevier Science
Year: 1979
Tongue: French
Weight: 243 KB
Volume: 20
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)86461-3

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✦ Synopsis

The N-terminus of ristocetin A and ristomycin A was found to be the p-hydroxyphenylglycine ring of ristomycinic acid by reductive alkylation of the peptide with acetone and NaCNBH3 followed by peptide hydrolysis and separation of the two rings of the isopropyl amino acid by hydrogenolysis.

Ristocetin' belongs to a group of glycopeptide antibiotics which includes vancomycin,* ristomycin, 3 actinoidin, 4 and avoparcin. 5 Vancomycin is the only member of the group for

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