Psathyrellins A–E, Antibacterial Guanacastane Diterpenoids from Mushroom Psathyrella candolleana

摘要

Five previously undescribed guanacastane diterpenoids, namely psathyrellins A–E ( 1 – 5 ), were obtained from cultures of the mushroom Psathyrella candolleana . Their structures with absolute configurations were elucidated by extensive spectroscopic methods. Compounds 1 – 3 showed antibacterial activity against four strains with MIC values in a range of 16–128?μg/mL. Graphic Abstract Supplementary Information The online version contains supplementary material available at 10.1007/s13659-021-00316-x.