The bioassay-guided fractionation of the Okinawan marine cyanobacterium Okeania sp. led to the isolation of the 26-membered cyclodepsipeptide odoamide (1). The gross structure of 1 was determined by 1D and 2D NMR analyses, whereas its absolute stereochemistry was determined using a variety of different methods, including synthesis and chemical degradation followed by chiral HPLC analysis. Notably,
冲绳海洋蓝藻Okeania sp。的
生物测定指导分馏。导致分离出26元的环二肽肽odamide(1)。的总体结构1是由一维测定和二维NMR分析,而是使用各种不同的方法,包括合成和
化学降解,然后通过手性HPLC分析测定其绝对立体
化学。值得注意的是,odoamide(1)对HeLa S3人宫颈癌细胞具有强大的细胞毒性,IC 50值为26.3 nM。