Two new cembranoids, flexibilisolide A (1) and flexibilisin A (2), along with one known combranoid 5 have been isolated from the cultured soft coral Sinularia flexibilis. Furthermore, two new cembranoids, flexibilisolide B (3) and flexibilisin B (4), along with two known combranoids (5, 6), have been isolated from the wild-type soft coral S. flexibilis. The structures of the new metabolites were determined on the basis of extensive spectroscopic analysis and by comparison of NMR data with those of known compounds. The metabolites 5 and 6 have been shown to exhibit weak cytotoxic activity against MCF-7 cancer cell line.
从养殖的软珊瑚Sinularia flexibilis中分离出了两种新的
钙镁锰酸盐,即柔性
钙镁锰酸盐A(1)和柔性
钙镁锰酸盐A(2),以及一种已知的
钙镁锰酸盐5。此外,还从野生型软珊瑚中分离出了两种新的
钙镁锰酸盐,即柔性
钙镁锰酸盐 B(3)和柔性
钙镁锰酸盐 B(4),以及两种已知的
钙镁锰酸盐(5,6)。通过大量光谱分析以及核磁共振数据与已知化合物的比较,确定了新代谢物的结构。研究表明,代谢物 5 和 6 对 MCF-7 癌细胞株具有微弱的细胞毒性。