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中文摘要：
目的：对网地藻科褐藻叉开网翼藻进行化学成分研究，并对分离得到的化合物进行细胞毒活性实验。方法：利用正相硅胶柱色谱、Sephadex LH-20柱色谱、反相HPLC及重结晶等手段进行分离纯化；借助IR，MS及NMR鉴定结构；通过改良的MTT法对单体化合物进行细胞毒活性实验。结果：从叉开网翼藻中分离得到8个化合物，分别鉴定为（-）-torreyol（Ⅰ），4β，5α-dihydroxycubenol（Ⅱ），3-farnesyl-P-hydroxybenziocacid（Ⅲ），chromazonarol（Ⅳ），岩藻甾醇（Ⅴ），苯乙酰胺（Ⅵ），4．羟基苯甲酸（Ⅶ）和正十六酸（Ⅷ）。结论：化合物Ⅱ和Ⅳ系首次从该海藻中发现；其余化合物均为首次从网地藻科海藻中分离得到。细胞毒活性试验结果显示所有化合物均无明显活性（IC50〉10μgmL^-1）。
英文摘要：
Objective： To investigate the chemical constituents of the brown alga D. divaricata, and to test cytotoxicities of the purified compounds. Method： Compounds were isolated by normal phase silica gel, Sephadex LH-20 chromatography and reverse phase HPLC techniques. Their structures were elucidated by spectroscopic methods including IR, MS and NMR. Cytotoxicities were tested by MTT method. Result： Eight compounds were isolated from ethanolic extract of the brown alga D. divaricata and their structures were identified as （ - ）-torreyol （ Ⅰ）, 4β, 5α-dihydroxycubenol （ Ⅱ ）, 3-farnesyl-p-hydroxybenzioc acid （ Ⅲ）, chromazonarol （Ⅳ）, fucosterol （ Ⅴ ）, phenyl acetylamine （ Ⅵ ）, 4-hydroxybenzoic acid （ Ⅶ） and n-hexadecanoic acid （Ⅷ）. Conclusion： Compound Ⅱ and Ⅳ were obtained from this alga for the in-st time. The others were isolated from the Dictyotaceae algae for the first time. All compounds were inactive （IC50 〉 10 μg·mL^- 1 ） a- gainst human tumor cell lines KB, Bel-7402, PC-3M,Ketr 3 and MCF-7.
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