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Updated: Aug 23, 2026

Measuring Volatile and Non-volatile Antifungal Activity of Biocontrol Products
Published on: December 5, 2020
Plant-growth inhibitory activity of heliannuol derivatives
Fuminao Doi1, Taiga Ohara, Takahisa Ogamino
1Department of Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi 3-14-1, Kohoku-ku, Yokohama 223-8522, Japan.
Abstract:
In addition to (+)-, (-)- and (+/-)-heliannuol E, growth-inhibitory activities of five synthetic chromans and four tetrahydrobenzo[b]oxepins were examined against oat and cress. All heliannuol E isomers exhibited similar biological activities against cress, whereas when tested against oat roots, the unnatural optical isomer (+) showed no inhibitory activity. Four brominated chromans and two tetrahydrobenzo[b]oxepin derivatives also showed apparent inhibition against both cress and oat.
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