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    • 1. 发明授权
    • Hot-water extracts of neem bark
    • 楝树皮热水提取物
    • US4537774A
    • 1985-08-27
    • US541479
    • 1983-10-13
    • Masaki ShimizuTadashi SudoTakeo Nomura
    • Masaki ShimizuTadashi SudoTakeo Nomura
    • A61K36/00A61K36/58A61K35/78
    • A61K36/58
    • Hot-water extracts of the neem bark produced by treating the bark of neem with water at a temperature from 0.degree. to 40.degree. C. and subjecting the residue from said pre-extraction treatment to extraction treatment with hot water. Purification of the extract thus produced by means of alcohol precipitation or dialysis gives products of a higher purity. Moreover, treatments prior to the pre-extraction treatment with water at 0.degree.-40.degree. C. with a non-polar organic solvent having a dielectric constant of 10 or lower and a polar organic solvent having a dielectric constant from 15 to 35 yields neem extracts of a further higher purity. The hot-water extracts of the neem bark according to the present invention possess activity against mouse L-5178Y cells and transplanted sarcoma 180 tumors.
    • 通过在0℃至40℃的温度下用水处理楝树皮产生的楝树皮的热水提取物,并将来自所述预萃取处理的残余物用热水进行提取处理。 通过醇沉淀或透析纯化由此产生的提取物,产生更高纯度的产物。 此外,在用0至-40℃的水用介电常数为10或更低的非极性有机溶剂和介电常数为15至35的极性有机溶剂进行预萃取处理之前的处理产生neem 提取物具有更高的纯度。 根据本发明的楝树皮的热水提取物具有针对小鼠L-5178Y细胞和移植肉瘤180肿瘤的活性。
    • 4. 发明授权
    • Alpha-hydroperoxyisopropylphenyl compounds and process for preparing the
same
    • α-氢过氧异丙基苯基化合物及其制备方法
    • US5043142A
    • 1991-08-27
    • US350707
    • 1989-11-17
    • Syuji IchikawaKatsuya FujiiTakeo Nomura
    • Syuji IchikawaKatsuya FujiiTakeo Nomura
    • C07C205/34C07C409/08C07C409/40C07C409/42C12Q1/28
    • C07C205/34C07C409/08C07C409/40C07C409/42C12Q1/28Y10S436/904Y10T436/206664
    • .alpha.-Hydroperoxyisopropylphenyl compounds are useful as an organic hydroxyperoxide content in test compositions for the measurement of peroxide-active substances and are effectively utilized for detecting peroxide-active substances such as blood or hemoglobin (occult blood).Test devices for the detection of occult blood are constituted of a carrier in which organic hydroperoxide, coloration indicator, buffering agent, wetting agent, activating agent and stabilizer are impregnated. If hemoglobin is present in a specimen, the organic hydroperoxide is activated to produce nascent oxygen with which the indicator is oxidized and develops color. Although 2,5-dimethylhexane-2,5-dihydroperoxide and cumene hydroperoxide have been employed as the organic hydroperoxide, they are disadvantageous in remarkable reduction of the detective sensitivity due to lack of the stability with elapse of time, pseudonegative judgement when vitamin C is contained in urine specimen, reduction of capacity in the multi-item test pieces for the detection of urinary components caused by discoloration of the adjacent test pieces, low coloration sensitivity, etc.The compounds of the present invention are improved in the above-mentioned defects.As typical examples of the .alpha.-hydroperoxy-isopropylphenyl compounds according to the invention are mentioned 4-(2,4,7-trioxaoctyl) cumene hydroperoxide, 4-(.alpha.-operoxyisopropyl)benzyl benzyl ether, 4-octyl cumene -hydroperoxyisopropyl)benzyl benzyl ether, 4-octyl cumene hydroperoxide, bis[4-(.alpha.-hydroperoxyisopropyl)benzyl]ether, N,N-dimethyl-]4-(.alpha.-hydroperoxyisopropyl)benzene]-sulfoamide and the like.
    • PCT No.PCT / JP87 / 00831 Sec。 371日期:一九八九年十一月十七日 102(e)日期:1989年11月17日PCT提交1987年10月29日PCT公布。 出版物WO88 / 03134 日期:1988年5月5日.α-过氧异丙基苯基化合物可用作测试组合物中有机羟基过氧化物含量,用于测量过氧化物活性物质,并有效用于检测过氧化物活性物质如血液或血红蛋白(潜血)。 用于检测隐血的测试装置由浸渍有机氢过氧化物,着色指示剂,缓冲剂,润湿剂,活化剂和稳定剂的载体构成。 如果血红蛋白存在于样品中,有机氢过氧化物被活化以产生新生氧,指示剂被氧化并显色。 虽然已经使用了2,5-二甲基己烷-2,5-二氢过氧化物和氢过氧化枯烯作为有机氢过氧化物,但由于缺乏稳定性随着时间的推移,检测灵敏度显着降低是不利的,当维生素C为 尿样中含有的尿液成分的检出量降低,相邻试验片变色引起的尿成分检测能力降低,着色敏感性差等。本发明的化合物在上述缺陷中得到改善 。 根据本发明的α-氢过氧基 - 异丙基苯基化合物的典型实例是4-(2,4,7-三氧代辛基)氢过氧化异丙苯,4-(α-过氧异丙基)苄基苄基醚,4-辛基异丙基氢过氧异丙基)苄基 苄基醚,4-辛基氢过氧化枯烯,双[4-(α-氢过氧异丙基)苄基]醚,N,N-二甲基 - ] 4-(α-氢过氧异丙基)苯] - 磺酰胺等。