Prenylagaramides A and B, New Cyclic Peptides from Two Strains of Oscillatoria Agardhii

Overview

Journal J Nat Prod

Date 1999 May 29

PMID 10346961

Citations 17

Authors

MURAKAMI

Itou

Ishida

Shin

Affiliations

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Abstract

Prenylagaramides A (1) and B (2), two new cyclic peptides, were isolated from the cultured cyanobacteria Oscillatoria agardhii (NIES-205) and O. agardhii (NIES-596), respectively. The structures of 1 and 2, which both contain a rare O-prenyltyrosine (Ptyr) unit, were established as cyclo(-Ptyr1-Gly2-Thr3-Gly4-Glu5-Phe6-Phe7-Asn8-Pro9-) and cyclo(-Ptyr1-Leu2-Tyr3-Pro4-Ile5-Asn6-Pro7-), respectively, by spectroscopic analysis and chemical degradation.

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