Pimarane diterpene and cytochalasin derivatives from the endophytic fungus Eutypella scoparia PSU-D44

Two pimarane diterpenes, named scopararanes A (1) and B (2), and two cytochalasins, named scoparasins A (3) and B (4), along with 4,8-dihydroxy-6-methoxy-4,5-dimethyl-3-methyleneisochroman-1-one (5) and diaportheins A (6) and B (7) were isolated from a culture broth of the endophytic fungus Eutypella scoparia PSU-D44. Their antimicrobial activities against Staphylococcus aureus ATCC 25923 and Microsporum gypseum SH-MU-4 were examined.