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Thus, we redesigned and synthesized a series of new precursors devoid of the unfavourable structural elements for the organocatalytic intramoleculor aldol reactions.

我们重新设计合成了该关环前体的衍生物，希望除去分子中不利于Aldol反应的结构单元以实现关环反应。

The enzymes are synthesized from the amino acids supplied by breakdown of ALEURONE GRAINS.

酶是由糊粉粒分解后产生的氨基酸所合成的。

These enzymes are synthesized at the expense of reserve proteins mobilized in the aleurone vacuoles.

这些酶是消耗糊粉液泡中被动用的贮藏蛋白合成的。

The carboxymethyl soybean polysaccharides had been synthesized and the mechanical strength, solubility, bacteriostasis of algin, algin carboxymethyl soybean polysaccharides alloy membrane had been studied.

用氯乙酸作为羧甲基化试剂合成了羧甲基大豆多糖；测定了羧甲基大豆多糖、褐藻胶、褐藻胶-羧甲基大豆多糖合金膜的机械强度、溶解性；并对其肠溶性、抑菌性也作了探讨。

A novel trifunctional fluorinated epoxy compound was synthesized, which was cured with one alicyclic anhydride and two aromatic diamines, respectively.

固化后的含氟三官能团环氧树脂表现出高玻璃化转变温度、低介电常数、低热膨胀系数、低吸水率等特点。

In order to study the struture activity relationship of these naphthazarin compounds and to search for more effective anti-tumor agents. We synthesized dl-shikonin and shikonin, alkannin respectively.

为了对这类萘醌类化合物作进一步的抗肿瘤活性试验，我们合成了消旋紫草素，紫草素，异紫草素及环紫草素和环异紫草素，并探讨其可能的作用机制，和作用区域。

Novel chitosan derivative with long alky groups as the hydrophobic moieties and carboxymethyl groups as the hydrophilic moieties was synthesized. The chemical structure of N-octyl-O, N-carboxymethyl chitosan was characterized via FTIR, 1H NMR and elemental analysis. The physical properties were analyzed with wide angle X-ray diffraction and differential scanning calorimetry.

以天然可生物降解的壳聚糖为原料，通过在壳聚糖6位羟基上引入羧甲基，在2位氨基上引入疏水烷基链，制得N-辛基－O，N-羧甲基壳聚糖两亲性衍生物，分别用FTIR、1H NMR和元素分析等技术对其结构进行表征，用广角X射线衍射和差示扫描量热法对具物理性质进行分析，并考察其在各种溶剂中的溶解性能及其对难溶性药物的增溶能力。

In this work, a series of layered silver-long chain alkylamine complex has been synthesized in the alcohol/water system for the first time, and such compound possesses the special sponge-like macroporous structure.

在本工作中，系列银-不同碳链长度的有机胺的配合物首次在醇-水体系中被合成获得，且该化合物具有特征性的海绵形貌中空结构。

Herein, three kinds of reaction type of gelators, methylbenzene–2, 4–bis (N, N'–alkyl) urea derivatives were synthesized by using high reactivity of isocyanate and alkylamine.

利用甲苯二异氰酸酯与烷基胺的高反应活性，制备了三种不同烷基链长的反应型凝胶剂甲苯–2， 4–二脲。

Molybdenum-glycol complexes synthesized with different alkylene glycols and Mo/alcohol ratios have different acidity and catalytic activity. For the topic reaction, the catalytic activity of Mo-1, 2-ethandiol or Mo-1, 2-propanediol is higher than that of Mo-butanediol.

结果表明，用不同的二醇和不同醇／钼比制备的钼醇催化剂具有不同的催化性能和酸性，用乙二醇和丙二醇制备的催化剂，催化性能优于丁二醇制备的催化剂。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失