从海绵、珊瑚等海洋动物分离出含奇异支链的甾醇已有不少报导.我们从湛江市附近(?)洲岛采集(1981年8月)花刺柳珊瑚[Echinogorgia flora(Nu-tting)],用丙酮提取,用硅胶柱层、重结晶方法,分离得到一种新的C_(30)甾醇,含量为干珊瑚的0.1%,经各种波谱数据(见表1,2,3,4)和其他实验,测定其结构为(Ⅰ),即⊿~(23)(29)24甲基-⊿~5-胆甾烯-3β-醇,命名为Echinoflorasterol.这种具有新型支链的 Separation of steroidal branched chain sterols from marine animals such as sponges and corals has been reported. We collected from the nearby island of Zhanjiang (August 1981), Echinogorgia flora (Nu-tting) ], Extracted with acetone, and separated by silica gel column chromatography and recrystallization method to obtain a new C 30 sterol with the content of 0.1% of the dry coral. After various spectral data (see Tables 1, 2, 3, ) And other experiments, the structure was determined as (I), that is ~ (23) (29) 24 Methyl- ~ 5 ~ cholesten-3β-alcohol, named Echinoflorasterol. This has a new branched