Phytotoxic Eremophilane Sesquiterpenes from the Coprophilous Fungus Penicillium sp. G1-a14
- UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
- Mario Figueroa Saldivar, Adjunct Faculty (Creator)
- Institution
- The University of North Carolina at Greensboro (UNCG )
- Web Site: http://library.uncg.edu/
Abstract: Bioassay-directed fractionation of an extract from the grain-based culture of the coprophilous fungus Penicillium sp. G1-a14 led to the isolation of a new eremophilane-type sesquiterpene, 3R,6R-dihydroxy-9,7(11)-dien-8-oxoeremophilane (1), along with three known analogues, namely, isopetasol (2), sporogen AO-1 (3), and dihydrosporogen AO-1 (4). The structure of 1 was elucidated using 1D and 2D NMR and single-crystal X-ray diffraction. Assignment of absolute configuration at the stereogenic centers of 1 was achieved using ECD spectroscopy combined with time-dependent density functional theory calculations. Sporogen AO-1 (3) and dihydrosporogen AO-1 (4) caused significant inhibition of radicle growth against Amaranthus hypochondriacus (IC50 = 0.17 mM for both compounds) and Echinochloa crus-galli (IC50 = 0.17 and 0.30 mM, respectively).
Phytotoxic Eremophilane Sesquiterpenes from the Coprophilous Fungus Penicillium sp. G1-a14
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Created on 11/11/2019
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Additional Information
- Publication
- Journal of Natural Products, 78 (2), pp. 339-342
- Language: English
- Date: 2015
- Keywords
- Penicillium, herbicides, weed controls, ascomycete