衍生物

The team discovered that curcuminoids enhanced the surface binding of amyloid beta to macrophages and that vitamin D strongly stimulated the uptake and absorption of amyloid beta in macrophages in a majority of patients.

研究发现，对于大多数病人，姜黄素类衍生物提高了β淀粉样蛋白与巨噬细胞的表面结合，而维生素D强烈刺激了巨噬细胞内β淀粉样蛋白的摄取和吸收。

The development trends in research on TTF derivatives containing halogen substituent are proposed.

提出了含卤素TTF衍生物的研究发展趋势。

As a result, this area is growing rapidly and many new methods of synthesizing porphyrin compounds with various substituent have been developed.

人们采用各种方法合成了具有各种取代基的卟啉化合物，其中以5，10，15，20-四苯基卟啉衍生物的合成尤为普遍。

Monoethyl succinate is an important organic intermediate and its derivatives can be applied in many fields.

丁二酸单乙酯是一种重要的有机中间体，它的衍生物应用广泛但研究报道尚不多见。

The main study of this dissertation is shown as follows.1.Two new amphiphilic steroid derivatives(N-cholesteryl succinyl glucosamine, CSG and N-deoxycholyl glucosamine,DCG) were designed and synthesized.Their chemical structures have been confirmed by means of Fourier Transform Infrared Spectrometry,Nuclear Magnetic Resonance Spectrometry and Mass Spectrometry.

设计、合成了新型的两亲性甾族衍生物—N-胆固醇琥珀酰基氨基葡萄糖(N-cholesteryl succinyl glucosamine，CSG)和N-脱氧胆酰基氨基葡萄糖(N-deoxycholyl glucosamine，DCG)，并采用傅立叶红外波谱仪(Fourier TransformInfrared Spectrometry，FT-IR)、核磁共振波谱仪(Nuclear Magnetic ResonanceSpectrometry，NMR)和质谱等分析仪器对原料、中间产物和最终产物的化学结构进行表征。

A synthetic route of the title compound, a new dihydrogenated derivative of lavendulol, starting with readily available isoanyl from the distillation residue in the ethanol production process with sugarhouse molasses in South China is described.

暨南大学化学系；中国科学院上海有机化学研究所摘要：叙述了以易得的异戊醇为原料合成熏衣草醇的一种新型二氢衍生物的方法。而异戊醇则可以从南中国的糖密发酵制造乙醇的蒸馏残液中得到。

These two series of probes differ in their mechanism of action. The first series exploits the concept of suicide substrate. When the probe is hydrolyzed by the target sulfatase, it will release an intermediate that undergoes elimination to form a reactive quinone methide which in turn reacts with nearby nucleophiles. The second series belongs to an electrophilic reagent which utilizes a cyclic sulfamate moiety serving both as the recognition unit and the trapping device.

这二系列标示分子的主要差异在於其标示机制，第一系列是源自於自杀性受质的概念，利用水解后的中间体会生成高反应性的quinone methide，来达到标示的效果；第二系列则是属於亲核性试剂型，采用环状胺基磺酸衍生物做为辨识端及捕捉机制，预期在其进入酵素的受质结合区后能与酵素催化中心形成共价键结。

In this paper, the properties of sulfur-containing cellulose derivatives, sulfhydryl cellulose and cotton cellulose xantante, were studied as well as their adsorption properties and mechanisms to heavy metal ions.

研究了含硫纤维素衍生物：巯基纤维素和纤维素磺原酸酯这两种材料的性能及它们对重金属离子的吸附性能和吸附机理。

Ascorbic acid, a well-known natural antioxidant, was successfully used to remove the sulfonyl group of α-phenylsulfonyl acetophenone derivatives by photochemical method.

抗坏血酸作为众所周知的天然抗氧化剂，在光诱导电子转移反应中被成功地运用到α-苯磺酰基苯乙酮衍生物磺酰基基团的移除反应中。

Now they possess twenty more series of product including glycyrrhizic acid, ammonium salt, sylvite, sodium salt, glycyrrhetinic acid, derivatives of the glycyrrhetinic acid etc. which are chiefly applied to the pharmaceuticals, food, cosmetic and tobacco industry as material, intermediate, synergistic agent and additive.

现拥有以甘草酸及铵盐、钾盐、钠盐，以及甘草次酸和甘草次酸的各种衍生物等二十多种系列产品，主要用于医药、食品、化妆品、烟草等行业的原料、中间体、增效剂和添加剂。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。