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Stoffwechselprodukte von Mikroorganismen. 251. Mitteilung . Die Esmeraldine A und B, tief grüne Farbstoffe aus Streptomyces antibioticus , Stamm Tü 2706
Author(s) -
KellerSchierlein Walter,
Geiger Adrian,
Zähner Hans,
Brandl Matthias
Publication year - 1988
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19880710824
Subject(s) - chemistry , phenazine , diastereomer , stereochemistry , strain (injury) , fatty acid , organic chemistry , medicine
The Esmeraldines A and B, Green Pigments from Streptomyces antibioticus , Strain Tü 2706 From a strain of Sterptomyces antibioticus , Tü 2706, two dark green substances, the esmeraldines A and B, 4 and 3 , respectively, were isolated. The structural elucidation was carried out by spectroscopic comparison with some simpler phenazines obtained from the same organism, saphenamycin ( 1 ) and related compounds, and by a series of chemical transformations. Esmeraldin B ( 3 ) is the 6‐methylsalicylic acid ester, and esmeraldin A ( 4 ) a mixture of higher saturated and unsaturated fatty acid esters of esmeraldic acid. The latter is a heterocyclic compound with seven rings and four N‐atoms, formally derived by condensation of two phenazine residues of the saphenic acid family. The esmeraldins are mixtures are of diastereoisomers.