乙酸乙酯

From Acropora pulchra and Porites Compressa Dana,a mixture of sterol has been isolated respectively.

从佳丽鹿角珊瑚乙醇提取液的乙酸乙酯部分和扁缩滨珊瑚乙醇提取液中的石油醚部分各分离出一甾醇混合物。

Ultrasound, Expansive Graphite, Cinnamic Acid, Ethyl Alkylidene a- Cyanoacetate, Montmorillonite, Pinacol

超声波，膨胀石墨，肉桂酸，烷叉基氰乙酸乙酯，蒙脱土，片呐醇

Reduction of 2-bromodifluoromethyl substituted propargyl vinyl ether afforded the difluorovinyl propargyl ether, which rearranged to the corresponding allene bearing a gem-difluoromethene in the mid-aliphatic chain.

第三部分，在碱性条件下，α-氟烷基乙酸乙酯与炔丙醇反应制备了一系列的氟烷基取代的炔丙基烯基醚，并研究了它的Claisen重排反应，得到了2，4-不饱和的氟烷基酮。

The results show that the ethyl acetate extract of Alpinia oxyphylla Miquel possesses strongest DPPH radical scavenging activity and reducing power in a concentration-dependent manner.

在还原能力、清除DPPH自由基和羟自由基方面，乙酸乙酯提取物表现出了很强的抗氧化能力，呈现剂量依赖关系。

Volatile oil and β-asaron are efficiency parts ofAcorus tatarinowii Scho...

提取石菖蒲挥发油、β-细辛醚、乙醚层、乙酸乙酯层、正丁醇层、水层六个部位。

Azelaic acid showed a higher relative antifeeding rate or a promotion effect on eating, and the absolute antifeeding rate of its ethyl acetate solution could reach 100 percent.

壬二酸的相对拒食率有的较高，有的表现为促进取食的作用，其乙酸乙酯溶液的完全拒食虫率高达100%。

The major results obtained are: PCR-RFLP method is suitable for molecular identification of Shihu; 205 compounds were isolated from 10 species of Dendrobium, including 21 new compounds, and 28 compounds isolated from genus Dendrobium for the first time. Each of the extracts and compounds were screened for anticoagulant and antitumour activities separately. The results indicated that the ethyl acetate extract from Dendrobium chrysanthun has significant anticoagulant function; the antitumour function of the 4 bibenzyl components from Dendrobium chrysotoxum is stronger than that of phenanthrene, of which the erianin has significant anti-angiogenic effect both in vivo and in vitro; components with moderate or stronger antitumour activities were found in the extracts of D. thyrsiflorum, D. chrysanthun and D. trigonopus; quality standard for 5 species of Dendrobium was drawn up use active or indicative components as control.

重要研究结果有：经方法学研究，认为PCR-RFLP法适于作为石斛属药材分子标记鉴定方法；对10种石斛进行化学成分分离鉴定，共分得205个化合物，其中新化合物21个，首次从石斛属分得的28个；对提取物和各单体化合物分别作抗凝血、抗肿瘤等活性筛选，结果说明束花石斛乙酸乙酯部位有显著的抗凝血作用，鼓槌石斛的4个联苄类成分抗肿瘤作用强于菲类，联苄类毛兰素在体内外有显著抗血管生成活性，球花石斛、束花石斛及翅梗石斛均筛到中等或较强抗癌活性的成分；选择有活性或指标性成分作对照品，对5种石斛草拟了质量标准。

Chemical constituents in ethyl acetate fraction of alcoholic extract from the flower of Bombax malabaricum DC .

采用GC-MS对木棉花醇提物乙酸乙酯溶解组分的化学成分进行了研究，共鉴定出46种成分。

ResultThe Buxus Microphylla leaf ethyl acetate extraction (high-dose and low dose) have obvious effect on reducing the serum total cholesterol and triglyceride, moreover, the high-dose ethyl acetate extract reducing blood lipid was better than the other extracts.

结果 小叶黄杨叶乙酸乙酯提取物的高、低两个剂量组均有显著的降低血清总胆固醇和三酰甘油的作用，小叶黄杨叶的水提取物和石油醚提取物均有显著的降低血清中总胆固醇的作用，小叶黄杨叶氯仿提取物及正丁醇提取物均无降血脂的作用。

The ethanol extract and ethyl acetate extract of Capparis Spinosa have the effect against skin fibrosis.

槌果藤乙酸乙酯提取物、乙醇提取物具有抗皮肤纤维化作用。

The X-ray diffract was used to analyze the crystal structure of the composite. Results show that after the talc was treated with blend coupling agent, the crystal structure of talc changed, and effect Intercalation phenomenon.

通过X射线衍射分析可知，用混合偶联剂对滑石粉进行预处理后，滑石粉晶体结构发生改变，产生了插层现象，使PP／滑石粉复合材料为纳米复合材料。

An authentic Maui wedding might require the services of a 'kahu', which is a Hawaiian minister.

毛伊可能需要一个真实婚礼服务'kahu'，这是夏威夷部长。