查询词典 cinnamic

After esterification, the ethyl-2-chloro-3-phenylpropionate reacts with diethyl malonate under the catalysis of sodium ethylate, and we obtain the corresponding triethyl ester. The-benzylsuccinic acid is formed by the triethyl ester reacting with concentrate hydrochloric acid and taking place hydrolyzation and decarboxylation reaction at the same time. In order to avoid the formation of cinnamic acid, the sodium ethylate and diethyl malonate must be react sufficiently. The course has simple operation, inexpensive materials and better yield.

具体制备工艺为：首先以L-苯丙氨酸为原料采用重氮化方法得到-2-氯-3-苯基丙酸，再经酯化得到-2-氯-3-苯基丙酸乙酯后在乙醇钠催化作用下和丙二酸二乙酯缩合，发生SN2反应，得到相应的三乙酯，然后经水解和脱羧，得到-苄基丁二酸；在实验中乙醇钠要和丙二酸二乙酯充分反应，避免生成肉桂酸乙酯；该过程操作简单，原料便宜，产率较高，总收率可达到26.8%。

HPLC-DAD methods for analyzing of the nine compounds in Chinese propolis, samples, including caffeic acid, ferulic acid, p-cinnamic acid, kaempferol, apigenin, pinocembrin, chrysin and galangin and for the chromatographic fingerprint of propolis in different regions of China were established.

建立了高效液相色谱法测定中国蜂胶中9个酚类化合物(咖啡酸、p-香豆酸、阿魏酸、山奈酚、芹菜素、白杨素、高良姜素、乔松素、松鼠素)含量的方法；建立了中国蜂胶的高效液相色谱指纹图谱。

A rapid capillary electrophoresismethod has been developed for the determination of eleven bioactive flavonoids in bee propolis:acacetin,apigenin,cinnamic acid,galangin,ferulic acid,hesperidin,luteolin,naringenin,quercetin,resveratrol,and rutin.

使用毛细管电泳法检测蜂胶中11种黄酮类化合物：金合欢素、芹菜配基、兰肉桂酸、黄良姜精、阿魏酸、橙皮甙、毛地黄黄酮、柑桔黄素、槲皮素、白藜芦醇、芦丁。

Methods: 60 freshly extracted , single-rooted premolars were randomly divided into two experimental groups (cinnamic aldehyde, gallnut decoction) and four control group (FC group, calcium hydroxide mixed with propylene glycol group, negative the control group and positive control group),.

选取60颗新鲜拔除的单根管前磨牙，随机分为2个实验组和4个对照组（ FC 组、氢氧化钙丙二醇糊剂组、阴性对照组和阳性对照组），每组10颗牙。

These two traditional Chinese medicine has a strong antibacterial activity and, more importantly, they have an advantage that lower toxicity than traditional disinfectant drug - Formocresol, CP. In order to help in the developmentof new strategies to prevent or eliminate the infection byE. faecalis, thereby improving treatment results in endodontics and give a reference to clinical application, In this research , using traditional Drug formocresol and the current most respected calcium hydroxide ( calcium hydroxide mixed with propylene glycol ) as the conventional control, we investigated the antimicrobial activity of Chinese herbs cinnamic aldehgd and Chinese gallnut against E. faecalis in root canals in vitro.

上述两种中药都具有很强的抗菌作用，更重要的是它们作为中药具有较传统消毒药物—甲醛甲酚、樟脑酚毒副作用小的优点，本研究通过离体牙根管消毒实验，并用传统消毒药物甲醛甲酚及当前最受推崇的氢氧化钙制剂做为常规对照，对两种中药的抗粪肠球菌性能进行评价，以期探讨更有效且安全的抑制或杀灭粪肠球菌的方法，提高根管治疗的成功率，为临床应用提供一定参考。

Faecalis, thereby improving treatment results in endodontics and give a reference to clinical application, In this research , using traditional Drug formocresol and the current most respected calcium hydroxide (calcium hydroxide mixed with propylene glycol) as the conventional control,we investigated the antimicrobial activity of Chinese herbs cinnamic aldehgd and Chinese gallnut against E.

上述两种中药都具有很强的抗菌作用，更重要的是它们作为中药具有较传统消毒药物—甲醛甲酚、樟脑酚毒副作用小的优点，本研究通过离体牙根管消毒实验，并用传统消毒药物甲醛甲酚及当前最受推崇的氢氧化钙制剂做为常规对照，对两种中药的抗粪肠球菌性能进行评价，以期探讨更有效且安全的抑制或杀灭粪肠球菌的方法，提高根管治疗的成功率，为临床应用提供一定参考。

A variety of seasonings are also good deodorant,大料, pepper, geraniol, cinnamic and so not only out of good taste, but also emitting a pleasant scent.

各种调味料也是不错的除臭剂，大料、辣椒、香叶、桂皮等不仅能够调出上好的美味，也能散发出宜人的馨香。

Normal propyl cinnamylate was synthesized by the esterification of normal propyl alcohol with cinnamic acid in the presence of potassium bisulfate monohydrate.

应用硫酸氢钾催化肉桂酸与正丙醇的酯化反应合成肉桂酸正丙酯。

The study was about the effects of main inhibitory substance — benzoic acid and cinnamic acid on radicle growth,microstructure and ultrastructure of watermelon.

本试验是利用已知的西瓜主要自毒物质—苯甲酸和肉桂酸，研究其对西瓜幼根的生长、显微结构及超微结构的影响。

It is composed of three different groups of chemicals, namely cinnamic acid amides, valine amide carbamates and mandelic acid amides.

该类杀菌剂由3组化学结构各不相同的化合物组成，包括肉桂酰胺、缬氨酰胺氨基甲酸酯和扁桃酰胺类。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。