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    • 47. 发明专利
    • NEW SESTERTERPENOID
    • JPH05213988A
    • 1993-08-24
    • JP4044592
    • 1992-01-31
    • SAGAMI CHEM RES
    • KAMIMURA DAISUKEYAMADA KAORU
    • A61K31/56A61P35/00C07J73/00
    • PURPOSE:To obtain a new sesterterpenoid exhibiting in vitro proliferation- inhibiting activity to mouse lymphogenous leukemic cell P388, reduced in side effects and expected in utilization as an antitumo agent by extracting and purifying a sponges Porifera. CONSTITUTION:Ircinia fasciculata which is a kind of sponges Porifera is finely cut with scissors and mixed with ethanol and pulverized with a blender and the resultant immersed liquid is cooled in the immersed state for 10 day and then filtered while sucking with Buchner funnel and brawn filtrate is concentrated with a rotary evaporator under reduced pressure and water is added to the concentrate and the concentrate is extracted with ethyl acetate and the ethyl acetate layer is concentrated to afford a black oily crude extract, which is then purified by a silica gel column chromatography, etc., to provide the objective new sesterterpenoid expressed by the formula (R is H or protecting group of hydroxyl group), exhibiting in vitro proliferation-inhibiting activity to cancer cell P388 and expected for utilization as an antitumor agent.