苄基

The effects of the combination of three hormones, i.e. 1-naphthlcetic acid, 2,4-dichlorophenoxy acetic acid (2,4-D) and 6-benzylaminopurine (6-BA) on tissue culture progress in carnation (Dianthus carophyllus?? L.) were studied.

研究了1-萘乙酸、2，4-二氯苯氧乙酸(2，4-D)和6-苄基腺嘌呤(6-BA)等3种激素的质量浓度组合对康乃馨组织培养过程的影响。

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%。

Sinopodohyllum hexandrum seeds were treated with different concentration NaHCO3, Na2CO3, KT, GA3, NAA, 6-BA and 2, 4-D. The effects of different chemicals on Sinopodohyllum hexandrum seeds were measured, and seed germination rate, germinability, germination index and germination speed were determined.

方法］用不同浓度的碳酸氢钠、碳酸钠、细胞激动素、赤霉素、萘乙酸、6-苄基－嘌呤和2，4-D等7种药剂处理桃儿七种子，通过测定种子发芽率、发芽势、发芽指数和发芽速度等活力指标研究药剂对桃儿七种子萌发的促进作用。

The benzylpiperidine derivatives show high activity of inhbiting against AChE in vitro, some of them are even more potent than -Hup A and Tacrine.

苄基哌啶类衍生物的胆碱酯酶活性发现，其与四氢吖啶的衍生物对AChE的抑制活性超过石杉碱甲和Tacrine。

Our company treasures technical innovation and development of new products. On the basis of stable food grade,pharmagrade glycine,we have also developed compound amino acid,4pyridone,hydantoin and Nbenzylglycine ethyl ester etc.

本公司十分注重技术创新和新产品开发，在稳定食品级，医药级甘氨酸等老产品生产的基础上，又开发了蚕蛹复合氨基酸，4羟基吡啶，海因，N苄基甘氨酸乙酯等产品。

The results showed that the leaves differentiation mode of Kalanchoe tomentosa is special. The green globoids were induced only on MS medium with additional 1.5 mg/L 6-BA and 0.5 mg/L IBA.

试验结果表明：褐斑伽蓝叶片分化方式特殊，初代培养时外植体叶片分化困难，仅在附加6-BA（6－苄基腺嘌呤）1.5mg/L、IBA0.5mg/L的MS培养基上分化出绿色球状体。

Virus-free strawberry stocks were obtained from Earliglow, Mohawk, Allstar, Northeaster, Demarvel and Latestar cultivars by using shoot meristem (0.3mm) culture on the MS medium supplemented with 1.32umol 6-benzy ladenine.

利用茎尖分生组织(0.3mm)培养技术，在MS附加1.32μmol 6-苄基嘌呤的培养基上培养，获得了早美光、矮丰、瑞星、奇妙、北斗和全明星6个草莓品种的无病毒苗。

Compounds 4a- 41 were synthesized by the reaction of 3 with different oxime s.

3与肟反应合成了含哒嗪酮的苄基肟醚类化合物4a～4l。

The variance of ABA of grape during storage were discussed in this paper.The following results are been drawn:the change of the content of ABA of grapes during storage characterizes by a parabolic shaped curve with obvious peak.Low temperature (0±0.5℃) is conducive to delaying the appearance of the peak of ABA and reduces the peak value.Nine kinds of plant growth regulators and two kinds of chemicals were chosen to treat grape bunches so as to study their mechanisms on ABA of grapes,2,3,5 triiodobenzoic a...

试验研究了葡萄贮期脱落酸的变化，结果表明：葡萄贮期 ABA含量呈抛物线形变化，有明显的高峰出现，低温( 0± 0 。5℃)贮藏具有推迟 ABA峰期和降低峰值的作用，经用 9种植物生长调节剂和 2种化学药品对葡萄果穗处理试验，三碘苯甲酸对 ABA的形成有极强的抑制作用，吲哚- 3-乙酸、赤霉素( GA3)、萘乙酸和 6-苄基氨基嘌呤( 6- BA)对 ABA的形成也具有拮抗作用，矮壮素、比久( B9)、乙烯利和外源脱落酸对 ABA的形成有促进作用。

Asymmetric hydrogenation of quinoline derivatives is a hot topic in asymmetric hydrogenation. However, some problems still remained.

芳香杂环化合物喹啉衍生物的不对称氢化一直是不对称氢化领域的一个热点，然而对于苄基取代喹啉和一些多取代的喹啉衍生物至今没有实现有效的不对称氢化。

Now, however, all children continue in "comprehensive" schools, and the eleven-plus determines which courses of study the child will follow.

然而现在，所有的孩子都要在综合学校继续学习，所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。