Chemical investigation of terrestrial and marine streptomycete isolates led to the identification of two new natural pigments, namely, 6-hydroxyisatin (3) and 6-hydroxy-5-methoxyisatin (4). Additionally, the strains delivered numerous known compounds, among them Nβ-acetyltryptamine, N-acetyltyramine, phenylacetamide, N-(2-phenethyl)acetamide, 1-acetyl-β-carboline, tyrosol, 2'-deoxyadenosine, 2'-deoxythymidine, anthranilic acid, 2'-deoxyuridine, indolyl-3-acetic acid, indolyl-3-carboxylic acid, and p-hydroxybenzoic acid. The isatin structures were deduced by NMR and mass studies and further confirmed by synthesis and by X-ray diffraction of the isomeric 5-hydroxy-6-methoxyisatin (5).
|Number of pages||8|
|Journal||Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences|
|State||Published - Dec 2016|
Copyright 2021 Elsevier B.V., All rights reserved.
- Natural pigments
- X-ray diffraction
ASJC Scopus subject areas
- Chemistry (all)