A novel compound named as brefeldin A formylate (1), together with two known compounds, brefeldin A (2) and ergosterol (3), was isolated from the Penicillium sp. strain HLKG-44, which was isolated from polluted environment in Fujian Province. Their structures were identified based on the spectral and X-ray crystallographic analyses. The compound 1, brefeldin A formylate, exhibited moderate cytotoxic activity against the human lung cancer cell line A549 with IC(50) value of 18.9 microg/ml by the MTT assay protocol.
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http://dx.doi.org/10.1080/10286020802513970 | DOI Listing |
J Sep Sci
February 2010
Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, PR China.
In this paper, high-speed counter-current chromatography (HSCCC), assisted with ESI-MS, was first successfully applied to the preparative separation of three macrolide antibiotics, brefeldin A (12.6 mg, 99.0%), 7'-O-formylbrefeldin A (6.
View Article and Find Full Text PDFJ Asian Nat Prod Res
April 2009
Key Laboratory for Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering, Department of Chemistry, Xiamen University, Xiamen, China.
A novel compound named as brefeldin A formylate (1), together with two known compounds, brefeldin A (2) and ergosterol (3), was isolated from the Penicillium sp. strain HLKG-44, which was isolated from polluted environment in Fujian Province. Their structures were identified based on the spectral and X-ray crystallographic analyses.
View Article and Find Full Text PDFJ Leukoc Biol
July 2006
Instituto de Histologia y Patologia, Universidad Austral de Chile, Casilla 567, Valdivia, Chile.
Kinins are biologically active peptides that are powerful mediators of cellular inflammation. They mimic the cardinal signs of inflammation by inducing vasodilatation and by increasing vascular permeability and pain. Neutrophils are chemoattracted to sites of inflammation by several stimuli.
View Article and Find Full Text PDFBiochim Biophys Acta
April 2002
Environmental Chemistry and Toxicology Laboratory, Department of Environmental Science, Policy and Management, University of California, Berkeley, CA 94720-3112, USA.
Kynurenine formamidase (KFase) (EC 3.5.1.
View Article and Find Full Text PDFEur J Immunol
April 2001
Department of Immunology, Baylor College of Medicine, Houston, TX 77030, USA.
MHC class I molecules assemble within the endoplasmic reticulum (ER) in complexes that include beta2-microglobulin (beta(2)m), the transporter associated with antigen processing (TAP)and several additional chaperones. Release of class I complexes from the ER is thought to require the binding of an appropriate endogenous peptide, predominantly delivered from the cytosol to the ER by TAP. It was recently demonstrated that exogenous synthetic peptide could 'directly' enter the ER of intact cells, independently of TAP function, and bind to the class I molecule H-2K(b).
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