benzofurans and ergosterol-5-8-peroxide

Studies of the EtOAc extract of the culture broth and methanol extract of the mycelium of Stereum insigne CGMCC5.57 led to the isolation of one new dihydrobenzofuran (1) and six known compounds (2-7). The structures of compounds were elucidated mainly by HRESIMS experiments, and 1D, 2D NMR spectroscopy analysis. This is the first report about the chemical constitutes of the fungus S. insigne.

Topics: Anti-Bacterial Agents; Antinematodal Agents; Bacillus subtilis; Basidiomycota; Benzaldehydes; Benzofurans; Drug Evaluation, Preclinical; Ergosterol; Escherichia coli; Magnetic Resonance Spectroscopy; Molecular Structure; Mycelium; Spectrometry, Mass, Electrospray Ionization

To investigate the chemical constituents from the branch of Broussonetia papyrifera.. Column chromatographic methods were used to isolate the chemical constituents. ESI-MS and NMR methods were employed for their structural elucidation.. Six compounds were isolated and identified as (2S)-7, 3'-dihydroxy-4'-methoxyflavan (1), ergosterol peroxide (2), D-galacitol (3), sulfuretin (4), liriodendrin (5), graveolone (6), respectively.. Compounds 1-6 were isolated from the plant for the first time.

Topics: Benzofurans; Broussonetia; Ergosterol; Flavonoids; Furans; Glucosides; Plant Stems; Plants, Medicinal