Abstract
One new sesquiterpene and six known compounds were isolated from Dryopteris fragrans (L.) Schot. They were identified as 3-O-β-D-glucopyranosylalbicanol-11-O-β-D-glucopyranoside (1), dihydroconiferylalcohol (2), (E)-3-(4-hydroxyphenyl)acrylic acid (3), esculetin (4), 5,7-dihydroxy-2-hydroxymethylchromone (5), eriodictyol (6) and isoorientin (7) by UV, MS, 1D-NMR and 2D-NMR spectroscopy. The antifungal activities of the seven isolated compounds were screened. Compounds 2, 3, 4 and 5 showed obvious activities against Microsporum canis and Epidermophyton floccosum.
Highlights
IntroductionDryopteris fragrans (L.) Schott, a deciduous perennial herb from the genus Dryopteris (Dryopteridaceae), is mainly distributed in Northeast China, Russia, Japan, Korea and North America
Dryopteris fragrans (L.) Schott, a deciduous perennial herb from the genus Dryopteris (Dryopteridaceae), is mainly distributed in Northeast China, Russia, Japan, Korea and North America.The herb is used for treatment of skin diseases such as psoriasis, rashes, dermatitis, other skin diseases, barbiers and arthritis [1–4]
The whole plant of Dryopteris fragrans (L.) Schott were collected in Wu-da-lian-chi, Heilongjiang
Summary
Dryopteris fragrans (L.) Schott, a deciduous perennial herb from the genus Dryopteris (Dryopteridaceae), is mainly distributed in Northeast China, Russia, Japan, Korea and North America. The herb is used for treatment of skin diseases such as psoriasis, rashes, dermatitis, other skin diseases, barbiers and arthritis [1–4]. Previous research had discovered phloroglucins, terpenes, flavonoids, saponins, essential oils and sterols in this plant, and activity screenings of the related constituents have become popular [2,5,6]. Our research group has reported one new phenolic acid from the herb [7,8]. We report the isolation and structural identification of one new sesquiterpene together with six known compounds which were obtained from genus Dryopteris for the first time and the assay of their antifungal activity in order to identify the active compounds
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