Eight compounds were isolated and identified from the soil-inhabiting fungus Aspergillus fumigatus 3T-EGY, namely, stearic acid (1), α-linolenic acid (2), physcion (3), di-(2-ethylhexyl) phthalate (4), 2,4,5,17-tetramethoxy pradimicin lactone (5), 3,5-dihydroxy-7-O-α-rhamnopyranoyl-2H-chromen-2-one (6), juglanthraquinone A-5-O-D-rhodosamine-(4′→1″)-2-deoxy-D-glucose (4″→1″′)-cinerulose B (7), and micropeptin (8). Their structures were determined on the basis of one-dimensional (1D-) and two-dimensional nuclear magnetic resonance (2D-NMR) [1H-, 13C-NMR, 1H-1H COSY (COrrelated SpectroscopY), and 1H-13C HMBC (Heteronuclear Multiple Bond Correlation) spectroscopy]. Compound 7 showed moderate in vitro antimicrobial activity against three pathogenic strains with inhibition zones values were ranged from 9.0 to 10.66 mm compared to neomycin as a positive control with inhibition zones values were ranged from 14.0 to 19.0 mm.
phenolics, Aspergillus fumigatus 3T-EGY, juglanthraquinone A triglycoside, VLC, in vitro antimicrobial activity
Publication DOI: 10.1556/1326.2017.00329Journal NLM ID: 9816232Publisher: Katowice, Poland: Institute of Chemistry, Silesian University
Correspondence: Ghareeb MA
Institutions: Microbial Chemistry Department, Genetic Engineering and Biotechnology Division, National Research Center, Dokki-Giza, Egypt, Medicinal Chemistry Department, Theodor Bilharz Research Institute, Kornaish El-Nile, Giza, Egypt
Methods: 13C NMR, 1H NMR, paper chromatography, column chromatography, melting point determination, HMBC, antimicrobial assay, COSY, VLC