Shaaban KA, Shaaban M, Grün-Wollny I, Maier A, Fiebig HH, Laatsch H. Julichrome Q6 glucuronide, a monomeric subunit of the julimycin B-I complex from a terrestrial Streptomyces sp.
JOURNAL OF NATURAL PRODUCTS 2007;
70:1545-50. [PMID:
17887721 DOI:
10.1021/np070196h]
[Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The terrestrial Streptomyces sp. isolate GW6225 afforded julichrome Q 6 glucuronide ( 9), the first monomeric member of the julimycin-B complex, and additionally the julichromes Q 1.2 ( 7a), Q 1.5 ( 7b), and Q 3.5 ( 8), which were fully characterized by 2D NMR spectra. Additional new microbial compounds were 4-acetylchrysophanol ( 6a) and N-phenyl-beta-naphthylamine ( 10). The isomeric N-phenyl-alpha-naphthylamine ( 11) was found in the marine Streptomyces sp. B8335 and was also characterized. The high antibiotic activity of Streptomyces sp. GW6225 extracts was probably due to the thiazolyl cyclopeptide nosiheptide.
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