Phallusialides A-E, Pyrrole-Derived Alkaloids Discovered from a Marine-Derived Micromonospora sp. Bacterium Using MS-Based Metabolomics Approaches.
J Nat Prod
; 82(12): 3432-3439, 2019 12 27.
Article
em En
| MEDLINE
| ID: mdl-31794218
ABSTRACT
Integrating MS-based metabolomics approaches, LC-MS-PCA and molecular networking enabled the targeted isolation of five new pyrrole-derived alkaloids, phallusialides A-E (1-5), from a marine-derived Micromonospora sp. bacterium. The structures of 1-5 were elucidated by analysis of their HRMS, MS/MS, and NMR spectroscopic data. The absolute configuration of phallusialide A (1) was determined on the basis of comparisons of experimental and theoretically calculated ECD spectra. Compounds 1 and 2 exhibited antibacterial activity against methicillin resistant S. aureus (MRSA) and E. coli, with MIC values of 32 and 64 µg/mL, respectively, whereas 3-5 showed no antibacterial activity even at 256 µg/mL, yielding important SAR insights for this class of compounds.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Pirróis
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Análise Espectral
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Alcaloides
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Metabolômica
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Micromonospora
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article