Abstract
The isolation of a fungicidal compound in 0.001% yield from healthy broad bean seedlings by extraction with benzene is described. After column chromatography, purification was achieved by low temperature recrystallisation from hexane, using ultra-violet light absorption, inhibition of spore germination ofAlternaria brassicicola and thin layer chromatography as criteria of purity. The compound has been given the name wyerone. Its in vitro activity against phytopathogens and dermatophytes and its protectant and eradicant activity against certain fungal pathogens of plants are reported.
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