Seco-chaetomugilins A and D were isolated from a strain of Chaetomium globosum that was originally isolated from the marine fish Mugil cephalus, and their absolute stereostructures were elucidated on the basis of spectroscopic analyses, including 1D and 2D NMR techniques, along with the chemical transformation from known chaetomugilins A and D. Seco-chaetomugilin D exhibited growth inhibitory activity against cultured P388, HL-60, L1210, and KB cells.
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http://dx.doi.org/10.3390/md7020249 | DOI Listing |
J Agric Food Chem
January 2025
CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, China.
Ten cytochalasin derivatives, including six new methylthioether-containing chaetoglobosins (thiochaetoglobosins A-F, ), a new related congener (18-nor-prochaetoglobosin II, ), and three known unsulfured counterparts (), were isolated and identified from AS-506, an endozoic fungus isolated from a deep-sea sponge, which was collected from Magellan Seamounts in the Western Pacific Ocean. Their structures were determined by extensive interpretation of the spectroscopic and X-ray crystallographic data, as well as by ECD calculations. Structurally, thiochaetoglobosins A-F () represent the first examples of chaetoglobosin derivatives containing a methylthioether group in the molecules, while 18-nor-prochaetoglobosin II () is the first 18-nor-chaetoglobosin derivative.
View Article and Find Full Text PDFNat Prod Res
December 2024
National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand.
Three previously undescribed compounds including 2',3'-dihydroxy-4,5',4″-trimethoxy--terphenyl (), 5-methoxyhydroperoxyco-chliodinol (), and 5-(3',3'-dimethylallyl)indole-3-oxoacetic acid (), along with fifteen known compounds ( - and ), were isolated from the endophytic fungus, BCC71876. The chemical structures were determined by NMR spectral information as well as the comparison with those closely related compounds reported in the literature. The compounds isolated were evaluated for biological properties including antimalarial, anti-TB, anti-plant pathogenic fungal, antibacterial, and cytotoxicity.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
December 2024
ICAR-Indian Institute of Wheat and Barley Research, Karnal, 132001, Haryana, India.
Spot blotch disease is prominent amongst several biotic stresses challenging wheat yield and quality. The impact of seed inoculation with Bipolaris sorokiniana, on important wheat seed quality of popular cultivar (cv.) DBW 187, was estimated in comparison to susceptible check WH 147.
View Article and Find Full Text PDFPLoS One
October 2024
Department of Biology, College of Sciences, University of Duhok, Duhok, Duhok Province, Kurdistan Region, Iraq.
Endophytic fungi are microorganisms that, exhibiting within the plant tissues without causing any apparent harm to the host, establish a symbiotic relationship with plants. Host plants provide endophytic fungi with essential nutrients and a protected environment. In exchange, the fungi can enhance the plant's ability to acquire nutrients.
View Article and Find Full Text PDFPlant Pathol J
October 2024
Korean Lichen Research Institute, Sunchon National University, Suncheon 57922, Korea.
Continuous use of synthetic fungicides has led to explosive emergence of fungicide-resistant microbes. Therefore, there are urgent needs for environmentally friendly antimicrobial agents with novel modes of action. This study investigated endolichenic fungi (ELF) as a source of antimicrobial compounds against various plant pathogens.
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