Lee NK, Fenical W, Lindquist N. Alternatamides A-D: new bromotryptamine peptide antibiotics from the Atlantic marine bryozoan Amathia alternata.
JOURNAL OF NATURAL PRODUCTS 1997;
60:697-699. [PMID:
9249973 DOI:
10.1021/np970042+]
[Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Four new bromotryptamine peptides, alternatamides A-D (1-4), have been isolated from the Atlantic bryozoan Amathia alternata. The structures of the alternatamides were assigned primarily on the basis of 2D NMR data. The absolute stereochemistry of the N-methylleucine amino acid was shown to be L (2'S) by hydrolysis and comparison with standards. The alternatamides show modest antibacterial activities against several Gram-positive bacteria.
Collapse