Two new compounds from the plant endophytic fungus Pestalotiopsis versicolor

Abstract

A new coumarin, 4,6-dihydroxy-7-formyl-3-methylcoumarin (1), and an α-pyrone derivative, 6-[(7S,8R)-8-propyloxiran-1-yl]-4-methoxy-pyran-2-one (2), together with four known α-pyrone derivatives (3–6), were isolated from the broth extract of the plant endophytic fungus Pestalotiopsis versicolor. Their structures were elucidated by extensive spectroscopic analysis and by comparison of the chemical shift values with those of related known compounds.

Keywords::

• endophytic fungi
• Pestalotiopsis versicolor
• coumarin
• α-pyrone

Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (21202033), the Natural Science Foundation of Hebei Province (C2012201047) and Foundation of Hebei University (179).