作者: Rong Wang , Zhi Kai Guo , Xiang Min Li , Fu Xiao Chen , Xia Fei Zhan
DOI: 10.1007/S10482-015-0462-Y
关键词: Biochemistry 、 Spiculisporic acid 、 Aspergillus candidus 、 Fungus 、 Pathogen 、 Microbiology 、 Antibacterial activity 、 Biology 、 Staphylococcus aureus 、 Biological activity 、 Pseudomonas
摘要: Two novel antibiotic spiculisporic acid analogues, named as F (1) and G (2), two known compounds, (−)-spiculisporic (3) secospiculisporic B (4), were isolated by bioactivity-guided fractionation from the fermentation broth of sea urchin-derived Aspergillus candidus strain HDf2. Their structures unambiguously established comprehensive analysis 1D 2D NMR, high-resolution MS spectra, comparison with compounds. Biological experiments demonstrated that compounds 1 2 displayed antibacterial activity against Gram-negative Pseudomonas solanacearum Gram-positive Staphylococcus aureus, but showed no cytotoxicity SGC-7901 human gastric adenocarcinoma SPC-A-1 lung tumor cell lines. This is first critical evidence identifying derivatives a potential bio-control agent for soil borne pathogen P. (E. F. Smith) Smith. These findings provide further insight into chemical biological diversity this class