Antimicrobial acylphloroglucinols and dibenzyloxy flavonoids from flowers of Helichrysum gymnocomum

Four flavonoids and two acylphloroglucinols from Helichrysum gymnocomum are described. Two of the flavonoids are new in Nature and one of acylphloroglucinols is reported for the first time. The six compounds have MIC values below 64 μg/ml against a selection of ten pathogens.