Isolation, Identification and Antimicrobial Activities of Two Secondary Metabolites of Talaromyces verruculosus

Molecules

Fang Miao²  Rui Yang¹  Dong-Dong Chen¹  Ying Wang²  Bao-Fu Qin²  Xin-Juan Yang² 

[1] College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China;College of Life Science, Northwest A&F University, Yangling, Shaanxi 712100, China

关键词: antimicrobial activity;    isocoumarin;    Talaromyces verruculosus;    rhizosphere microorganism;    Stellera chamaejasme L.;   

DOI  :  10.3390/molecules171214091

来源: mdpi

【 摘 要 】

From the ethyl acetate extract of the culture broth of Talaromyces verruculosus, a rhizosphere fungus of Stellera chamaejasme L., (−)-8-hydroxy-3-(4-hydroxypentyl)-3,4-dihydroisocoumarin (1) and (E)-3-(2,5-dioxo-3-(propan-2-ylidene)pyrrolidin-1-yl)acrylic acid (2) were isolated and evaluated for their antimicrobial activities. Their structures were elucidated by UV, IR, MS, ¹H-NMR, ¹³C-NMR and 2D NMR spectra. Compound 1 exhibited the significant activities in vitro against two strains of bacteria and four strains of fungi. Compound 2 gave slight activities on the fungi at 100 µg mL⁻¹, but no activities on the bacteria. Compound 1 should be considered as a new lead or model compound to develop new isocoumarin antimicrobial agents.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.