论文部分内容阅读
将日本冲绳石垣岛的软珊瑚(Lobophytum pau-ciflorum Ehrenberg)用甲醇和丙酮依次提取,合并提取物,悬浮于水中,乙醚提取物经硅胶柱层析,正己洗-丙酮(20:1～1:1)以及甲醇洗脱。分别得流份5,6和8。再经硅胶柱层析,流份5用苯-乙酸乙酯(20:1然后到10:1)洗脱得无色片状结晶Ⅰ;6用苯-乙酸乙酯(5:1)洗脱得无色棒状结晶Ⅱ;8用硅胶高压液相层析,以氯仿-甲醇(20:1～10:1)洗脱等处理得到三个新多羟基
Lobophytum pauciflorum Ehrenberg in Ishigaki Island, Okinawa, Japan was extracted sequentially with methanol and acetone. The extracts were combined and suspended in water. The ether extracts were purified by silica gel column chromatography, normal hexane-acetone (20: 1 to 1: 1) and methanol. Fraction 5, 6 and 8 respectively. The residue was purified by column chromatography on silica gel. Fractions 5 eluted with benzene-ethyl acetate (20: 1 then 10: 1) to give colorless tablets I; 6, eluted with benzene-ethyl acetate The colorless rod-shaped crystals II; 8 using silica gel high pressure liquid chromatography, chloroform - methanol (20: 1 ~ 10: 1) elution and other treatment to give three new polyhydroxy