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Kipukasins, Nucleoside Derivatives from Aspergillus versicolor
Journal article   Peer reviewed

Kipukasins, Nucleoside Derivatives from Aspergillus versicolor

Ping Jiao, Sanjay V Mudur, James B Gloer and Donald T Wicklow
Journal of natural products (Washington, D.C.), Vol.70(8), pp.1308-1311
08/24/2007
DOI: 10.1021/np070241l
PMCID: PMC2532754
PMID: 17608440
url
https://www.ncbi.nlm.nih.gov/pmc/articles/2532754View
Open Access

Abstract

Seven new aroyl uridine derivatives (kipukasins A-G; 1-7) were isolated from solid-substrate fermentation cultures of two different Hawaiian isolates of Aspergillus versicolor. The structures of compounds 1-7 were determined by analysis of NMR and MS data. The nucleoside portion of lead compound 1 was assigned as uracil-1-β-D-ribofuranoside by spectral comparison with an authentic standard. The bioactivity of the original A. versicolor extracts was accounted for mainly by the presence of the known metabolite sterigmatocystin, but kipukasins A and B showed modest activity in assays against Gram-positive bacteria. © 2007 American Chemical Society and American Society of Pharmacognosy.

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