酰化

A hard butter rich in 1,3—distearyl-2-lonoleyl-glycerolhas been prepared by lipase-catalysed transesterification of safflower oil with stearic acid.

用高亚油酸型的红花籽油和硬脂酸，经1，3位专一性固定化脂肪酶Lipozyme的催化，通过有方向性的酯交换，制备出了以1，3——二硬脂酰—2—亚油酰甘油酯为主要组分的硬脂。

Dipalmitoylphosphatidylcholine , sodium 1-pentadecylhexadecylsulfate and dihexadecyldimethylammonium bromide were synthesized and used to prepare stable vesicles.

文合成了二棕榈酰磷脂酰胆碱，1-十五烷基十六烷基硫酸钠和双十六烷基二甲基溴化铵，分别制备了稳定均一的人工双层膜-囊泡。

Chiral homoallylic alcohol was prepared in this paper from asymmetric allylation of aldehyde with enantiomerically pure allylboronate tartramides such as chiral N,N'-diphenyl tartramide and N,N'-di...

本文以手性烯硼酸丙基酒石酸酰胺酯(如烯丙基硼酸-N，N'-二苯基酒石酸酰胺酯)为辅基，进行醛的不对称烯丙基化反应研究。

The weak interaction could not be ignored, which was suggested to be significant in preventing the tautomerization of FM, especially when the concentration of FM increased in the aqueous solution of FM.

在作者早期的研究中发现，此相互作用对于阻碍甲酰胺的异构化具有重要意义，特别是当甲酰胺在溶液中含量增大时，此相互作用更加不能忽视。

Acylamino compounds from AD were synthesized by cleavage of A-ring through NaIO4/KMnO4 oxidation, ring closure by amination, oximation with hydroxylaminechloride in C-17 position, and reduction of oxime in C-17 position and substitution with substituted acylchloride and carboxylic acids.

本文以AD为起始原料，经过NaIO4/KMnO4氧化裂解、胺解环合、羟氨肟化反应，在甾体17位形成肟，并将肟还原成胺，与取代酰氯和有机羧酸反应，合成了15个酰胺化合物。

The results show that the hydrophilicity of PLA film is improved by introduction amido: the contact angle decreases from 78° to 56° and the free energy increases from 42.7mJ/m^2 to 51.4mJ/m^2. Compared with the control, osteoblast spread out more filopodia after 3 d incubation on amidation surface, and it entered cell division phase more quickly, which indicated that the surface amidation could promote the cell's adhesion and proliferation on the PLA film.

结果表明，酰胺基的引入改善了PLA膜的表面亲水性，其表面水接触角由78°减少到56°，自由能由42.7mJ/平方公尺增大到51.4mJ/平方公尺；与对照组相比，成骨细胞在改性表面培养3d后有大量的丝状伪足伸出，并且较快地进入了细胞分裂期，表明PLA膜表面的酰胺化能够促进细胞的黏附和增殖。

A series of 2-acetylformanilides were prepared,followed by thiolation with Lowesson reagent to afford 2-acetylthioformanilides,which further reacted with Mn3·2H2O in glacial acetic acid under microwave irradiation to afford 2-acetyl benzothiazole s.

合成了一系列的硫代酰胺，研究了它们在微波辐射醋酸锰作用下发生氧化自由基环化反应，成功地合成了一系列2-乙酰基苯并噻唑衍生物，其结构经红外光谱、核磁共振谱和质谱得到了证实

The synthesis of l-(4-acetylaminophenyl)-2-bromo-1-propanone was discussed, and the mechanism and possible factors were analyzed. Hence the routine was determined, in which l-(4-acetylaminophenyl)- 1-propanone was reacted with Bromine dissolved in ethanol, so that the a -bromination can be carried on, resulted in the yield of up to 70.4%.

探讨了1-(4-乙酰胺基苯基)-2-溴代-1-丙酮的合成方法，分析了反应机理和影响因素，确定将1-(4-乙酰氨基苯基)-1-丙酮溶解在乙醇中以溴的乙醇溶液进行α-溴化的合成路线，产率可达70.4％。

The results showed that the degree of butyryl substitution of CAB increased and the degree of acetyl substitution of CAB decreased as the activation time increased. The degree of substitution of CAB changed slightly after the esterification went along about 2h.

随着活化时间的增加，CAB的丁酯取代度会逐渐增大，乙酯取代度会逐渐减小；酯化反应2h后，CAB取代度变化不大；CAB的丁酯取代度随着反应体系中丁酰基摩尔分数的增加而增大，而乙酯取代度则随着丁酰基摩尔分数的增加而减小。

In order to find biologically active urea compounds,seven new N-[5-(3-pyridyl)-1,3,4-thiadiazol-2-yl]-N'- urea derivatives were synthesized by the reaction of 2-amino-5-(3-pyridyl)-1,3,4-thiadiazole with aroylazides,which were prepared starting from carboxylic acids,ethyl chloroformate and sodium azide by one-pot procedure.

为了寻找高生物活性的脲类化合物，通过2-氨基-5-(3-吡啶基)-1，3，4-噻二唑与酰基叠氮化物反应，设计合成了7个新的N-[5-(3-吡啶基)-1，3，4-噻二唑-2-基]-N'-取代苯基脲，其中芳酰基叠氮化物是以芳酸、氯甲酸乙酯、叠氮化钠为起始原料采用&一锅法&所制得。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐