Phloroglucinol derivatives of Dryopteris abbreviata.

Abstract

The phloroglucinol derivatives of Dryopteris abbreviata (DC.) NEWMAN from Turkey, a member of the European D. filix-mas complex, were investigated. A known compound, flavaspidic acid PB (I), and three new compounds, designated as dimethylphlorobutyrophenone (II), abbreviatin PB (III) and trisabbreviatin BBB (IV), were isolated in addition to the already reported compounds, filixic acid, flavaspidic acid AB and abbreviatin BB (V). This is the first report of the occurrence of a series of phloroglucinol derivatives lacking the filicinic acid ring moiety, i.e., compounds II, III, IV and V, in European taxa of the D. filix-mas complex.