Phomoeuphorbins A-D, azaphilones from the fungus Phomopsis euphorbiae

Four azaphilones, named phomoeuphorbins A-D (1-4) were isolated from cultures of Phomopsis euphorbiae, an endophytic fungus isolated from Trewia nudiflora. Structures of 1-4 were established on the basis of spectroscopic analyses, including application of

This work was supported by grants from the National Natural Science Foundation of China (No. 30400038), Key Scientific and Technological Projects of Yunnan province (2004NG12) and the XiBuZhiGuang Project of Chinese Academy of Sciences. The authors are gr