摘要

Alokicenones A-H (1-8), eight new tetrahydroanthracenes and one known okicenone (9) were identified from the secondary metabolites of mangrove-derived Streptomyces sp. HN-A101. Their structures were elucidated by HRESIMS and NMR spectroscopic data. The absolute configurations of them were determined by the calculated and experimental ECD curves. Compounds 1-2 and 9 showed moderate cytotoxicity against HCT116 and SW620 cancer cell lines with IC50 values from 0.63 to 7.73 mu M. In addition, compounds 1-3 and 7-9 also exhibited inhibitory activities against ROCK2 or BRD4.