1. ChemInform Abstract: New Antibacterial Isocoumarin Glycosides from a Wetland Soil Derived Fungal Strain Metarhizium anisopliae
- Author
-
Peng Huang, Xin Sheng Yao, Hao Gao, Peng Ju Li, Xiao-Xia Li, Xingzhong Liu, Jin-Shan Tang, Ping Hua Sun, and Jie Feng Tian
- Subjects
chemistry.chemical_classification ,Circular dichroism ,biology ,Strain (chemistry) ,Stereochemistry ,Metarhizium anisopliae ,Glycoside ,General Medicine ,Carbon-13 NMR ,biology.organism_classification ,Isocoumarin ,chemistry.chemical_compound ,chemistry ,Antibacterial activity ,Derivatization - Abstract
Eight new isocoumarin glycosides (1-8) were obtained from the solid culture of the wetland soil-derived fungus Metarhizium anisopliae (No. DTH12-10). Their chemical structures were elucidated by analyses of HR ESI-TOF MS, (1)H, (13)C NMR, (1)H-(1)H COSY, HSQC, and HMBC spectra. The absolute configurations were determined by single crystal X-ray diffraction, circular dichroism (CD) spectrum, and chemical derivatization methods. In addition, inhibition of the biofilm formation and the secretion of virulence factor of the new isocoumarin glycosides against Pseudomonas aeruginosa strain PAOA (clinical isolates) were evaluated. The result revealed that compound 1 showed antibacterial activity comparable with (Z)-4-bromo-5-(bromomethylene)-2(5H)-furanone (BF).
- Published
- 2016