Perylenequione Derivatives with Anticancer Activities Isolated from the Marine Sponge-Derived Fungus, Alternaria sp SCSIO41014

作者：Pang, Xiaoyan; Lin, Xiuping; Wang, Pei; Zhou, Xuefeng; Yang, Bin; Wang, Junfeng^*; Liu, Yonghong^*

来源：Marine Drugs, 2018, 16(8): 280.

DOI：10.3390/md16080280

• sponge-derived fungus
• Alternaria sp.
• perylenequinone derivatives
• X-ray single crystal diffraction
• cytotoxic activity
• antibacterial

Seven new secondary metabolites classified as two perylenequinone derivatives (1 and 2), an altenusin derivative (3), two phthalide racemates (4 and 5), and two phenol derivatives (6 and 7), along with twenty-one known compounds (8-28) were isolated from cultures of the sponge-derived fungus, Alternaria sp. SCSIO41014. The structures and absolute configurations of these new compounds (1-7) were determined by spectroscopic analysis, X-ray single crystal diffraction, chiral-phase HPLC separation, and comparison of ECD spectra to calculations. Altertoxin VII (1) is the first example possessing a novel 4,8-dihydroxy-substituted perylenequinone derivative, while the phenolic hydroxy groups have commonly always substituted at C-4 and C-9. Compound 1 exhibited cytotoxic activities against human erythroleukemia (K562), human gastric carcinoma cells (SGC-7901), and hepatocellular carcinoma cells (BEL-7402) with IC50 values of 26.58 +/- 0.80, 8.75 +/- 0.13, and 13.11 +/- 0.95 mu g/mL, respectively. Compound 11 showed selectively cytotoxic activity against K562, with an IC50 value of 19.67 +/- 0.19 mu g/mL. Compound 25 displayed moderate inhibitory activity against Staphylococcus aureus with an MIC value of 31.25 mu g/mL.

• 出版日期2018-8
• 单位中国热带农业科学院椰子研究所; 中国热带农业科学院; 中国科学院大学