An antibacterial cytochalasin derivative from the marine-derived fungus Diaporthaceae sp. PSU-SP2/4

- A new cytochalasin was isolated from a mycelial extract of Diaporthaceae sp. PSU-SP2/4.
- It showed strong activity against methicillin-resistant Staphylococcus aureus.
- A new ethyl tridecatrienoate and five known compounds were obtained from a broth extract.