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ARS Home » Southeast Area » Stoneville, Mississippi » Biological Control of Pests Research » Research » Publications at this Location » Publication #269862

Title: CHARACTERIZATION ADN BIOLOGICAL ACTIVITY OF SECONDARY METABOLITES FROM ARMILLARIA TABESCENS

Author
item Herath, Bandera - University Of Mississippi
item Jacob, Melisa - University Of Mississippi
item Abbas, Hamed
item Wilson, A - U.s. Forest Service (FS)
item Nanayakkaara, Dhammika - University Of Mississippi

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 7/5/2011
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Ethyl acetate extracts from liquid cultures of Armillaria tabescens showed good antimicrobial activity against Candida albicans, Cryptococcus neoformans, Escherichia coli and Mycobacterium intracellulare. Chemical analyses of extract constituents led to the isolation and identification of two new compounds, emestrin-G (1) and a new diastereomer of the cephalosporolide series, cephalosporolide-J (2), along with seven other previously known compounds, emestrin (3), emestrin-B (4) cephalosporolide F (5), decarestrictine-C2 (6), erithritol diacetate (7), ergosta-5-7-22-triene-3-ol (8) and ergosta-5-22-diene-3-ol (9). Structural elucidation of all compounds was carried out by NMR and MS analysis. Compounds 1, 3 and 4 were identified as the compounds responsible for the observed antimicrobial activity.