Alkaloids from the marine sponge Zyzzya fuliginosa damirones A (1) and B (2); makaluvamines H (3), C (4), G (5), and L (6); and zyzzyanones A (8) and B (9) were investigated for the ability to protect egg-cell membranes of the sea urchin Strongylocentrotus nudus from UV-radiation. Damirones, zyzzyanones, and tricyclic makaluvamines C (4) and H (3) exhibited the greatest membrane-protective activity. It was shown that makaluvamines G (5) and L (6) were converted by UV-irradiation into damirones A (1), B (2), tricyclic makaluvamines H (3), C (4), and zyzzyanones A (8) and B (9), respectively.
研究了海洋海绵 Zyzzya fuliginosa 中的
生物碱--达米龙 A (1) 和 B (2);马卡卢瓦胺 H (3)、C (4)、G (5) 和 L (6);以及zyzzyanones A (8) 和 B (9)--保护海胆 Strongylocentrotus nudus 的卵细胞膜免受紫外线辐射的能力。达米隆、zyzzyanones 和
三环马卡卢胺 C (4) 和 H (3) 表现出最强的膜保护活性。研究表明,马卡鲁胺 G (5) 和 L (6) 在紫外线照射下分别转化为达米隆 A (1)、B (2),
三环马卡鲁胺 H (3)、C (4),以及zyzzyanones A (8)和 B (9)。