Antibacterial Salinaphthoquinones from a Strain of the Bacterium
Salinispora arenicola Recovered from the Marine Sediments of St. Peter and St. Paul Archipelago, Brazil.
JOURNAL OF NATURAL PRODUCTS 2019;
82:1831-1838. [PMID:
31313922 DOI:
10.1021/acs.jnatprod.9b00062]
[Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Salinaphthoquinones A-E (1-5) were isolated from a marine Salininispora arenicola strain, recovered from sediments of the St. Peter and St. Paul Archipelago, Brazil. The structures of the compounds were elucidated using a combination of spectroscopic (NMR, IR, HRESIMS) data, including single-crystal X-ray diffraction analysis. A plausible biosynthetic pathway for 1-5 is proposed. Compounds 1 to 4 displayed moderate activity against Staphylococcus aureus and Enterococcus faecalis with MIC values of 125 to 16 μg/mL.
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