Antimicrobial and radical scavenging flavonoids from the stem wood of Erythrina latissima

The stem wood of Erythrina latissima yielded two isoflavones, erylatissins A 1 and B 2, and a flavanones (−)-7,3′-dihydroxy-4′-methoxy-5′-(γ,γ-dimethylallyl)flavanones 3, in addition to ten known flavonoids. The isolated compounds showed antimicrobial activity against Escherichia coli, Staphylococcus aureus, Bacillus subtilis and Candida mycoderma, as well as exhibited weak radical scavenging properties towards DPPH radical.