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化合物

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This is the first report of an N-carboxyl indole alkaloid from a natural source.

化合物(Ⅰ-4)和化合物(Ⅰ-6)是首次从海绵中发现的已知化合物,这两个化合物都具有一定的生理活性。

The melt extrusion mixtures do not include certain additives such as polyoxy- alkylene compounds, alkylmonoethonolamide compounds, alkyldiethanolamine compounds and polyetheramide compounds.

熔体挤出混合物不包括某些添加剂如聚氧化烯化合物、烷基单乙醇酰胺化合物、烷基二乙醇胺化合物和聚醚酰胺化合物

A series of equipments such as X-ray diffractometer, scanning electronic microscope, electronic probe microanalysis, transmission electronic microscope and instruments for measuring thermoelectric properties were used to investigate the effect of microstructures on the thermoelectric properties of these La〓Fe〓Co〓Sb〓 compound systematically. Crystal structure simulation shows a huge void in the lattice of binary skutterudite compound.

采用晶体结构计算软件JSVl.07模拟了该种化合物未填充稀土原子的晶体结构,根据模拟结果找出在该种化合物中存在着较大的空隙,通过设计在该位置填充稀土原子得到了填充稀土原子的填充skutterudite化合物的晶体结构,直观地了解了填充skutterudite化合物的晶体结构特性。

To discover new strobilurin analogues with high pesticidal activity, a series of new strobilurin derivatives containing substituted pyrazole and pyrimide ring, which included 124 novel compounds (73 compounds containing substituted pyrazole ring and 51 compounds containing substituted pyrimide ring) were designed and synthesized. In addition, 36 new intermediates were synthesized. Their structures were characterized by 1H NMR and elemental analysis, partial compounds were characterized by MS and IR once again.

为了发现具有更好生物活性的新型Strobilurin类化合物,本论文在详尽总结文献的基础上,设计并合成了含吡唑和嘧啶环的新型Strobilurin类化合物124个,其中含吡唑环的新加热管型Strobilurin类化合物73个,含嘧啶环的新型Strob 加热管 ilurin类化合物51个;未见文献报道的中间体36个,所合成的化合物经过1H NMR、IR、LC-MS或元素分析等确定了结构。

The invention provides a phomopsis compound of sea weed fungus with strong antibacterial activity and application in antibacterial drugs, a relative preparation method and an application, wherein the sea weed fungus is hzla01-1(Phomopsis sp.hzla01-1) as phomopsis compound A and B, compound A is colorless oily substance, and the compound B is colorless acicular crystal.

提供一类来源于海藻真菌的具有强抗菌活性,可应用于抗菌药物的拟茎点菌素化合物及其制备方法和应用。海藻真菌为拟茎点属hzla01-1(Phomopsis sp.hzla01-1)。化合物分别为拟茎点菌素化合物A和B,化合物A为无色油状物,化合物B为无色针状晶体。

Amoung 10 compounds (polyhydroxy substituted N-benzoylserotonin derivatives), compound 4 shows the highest number of ε. The ε of compound 4 is high up to 11.43 × 103㎝-1M-1, which is the 2.84 times of the ε of control group, octyl salicylate. Moreover, compound 4 can absorb all the wavelength if UVB (280 nm - 320 nm), so compound 4 can provide the best protection from UVB. Additionally, this study also discovers that the compound 5 not only can absorb UVB, but also can absorb UVA.

而本研究所合成之多羟基取代N-色洛冬宁苯甲醯胺衍生物(化合物1 ~ 10)莫耳吸收系数最高者为化合物4,其在波长306 nm的莫耳吸收系数达11.43 × 103㎝-1M-1,为对照组水杨酸辛酯的莫耳吸收系数的2.84倍,且化合物4的吸收波长涵遝蒤紖VB波长(280 ~ 320 nm)的范围,故化合物4能提供UVB波长的最佳防护;另外化合物5除了具有UVB波长的吸收外,还具有UVA波长的吸收作用。

From its roots, we gained 9 compounds including triterpenes, steroidal glycoside, and fatty acid, a triterpene and a of them are new compounds.

分别对肥牛树的根、茎、叶三个部分的乙醇提取物进行了提取分离工作,从其根中分离鉴定了9个化合物,包括三萜、甾醇苷、酚性化合物、螺环化合物和脂肪酸等,其中有两个新化合物,即一个三萜和一个螺环化合物

In this paper, four new and 15 known compounds were isolated from the fermentation of two endophytes and a marine fungus, two of which were shown to be strong bioactive against the growth of Helicobacter pylori, one of which were found to be significantly potential vasorelaxation agents, and three of which were exhibited strong antifungal bioactivities.

本论文对两株植物内生真菌和一株海洋真菌的次生代谢产物的结构和生物活性进行了研究,一共得到了23个化合物,鉴定了其中19个化合物的结构,其中4个是首次发现的新化合物,从中筛选出2个具有强活性的体外抗幽门螺旋杆菌化合物和1个具有显著体外舒血管作用的物质,并发现了3个具有较强抗菌作用的化合物

Which are consistent to the source rocks relating to evaporite depositional environment within the lower part of Xingouzui Formation and the upper part of Shashi Formation in the study area.

对江汉盆地西南缘12个原油样品中含硫化合物分布特征的研究表明,原油中二苯并噻吩系列化合物和苯并萘并噻吩系列化合物分别占芳烃总量的4.61%~9.79%和0.27%~1.32%,与烃源岩中含硫化合物的含量一致,反映原油中含硫化合物的含量与沉积环境有关。

In our research, through derivatization of stable calix[4]pyrroles, active substituting units were jointed on the calixpyrrolic skelecton. After acylamide and free radical transfer reaction, the preparation of new calix[4]pyrrole-bonded stationary phases were fulfilled. the separation abilities of them to inorganic and organic anions and medicines were exploited and new analytical methods were established. The separation mechanisms were discussed. At the same time, through using calix[4]pyrroles as additives in CZE to influence the electrophoresis of inorganic anions, the recognition mechanisms and influencing factors in supramolecular chemistry were also studied.

本项目以新型杯吡咯大环化合物分子识别化学研究为基础,设计合成了含活泼取代基的官能化杯[4]吡咯化合物,通过酰胺化反应和原位自由基链转移反应制备了新型的杯[4]吡咯色谱固定相,系统研究了具有阴离子识别功能的杯[4]吡咯大环化合物作为离子色谱的分离介质对无机、有机离子型化合物和药物分子的色谱分离性能,建立了新的分析方法,对分离机理进行了探索和验证;同时将杯[4]吡咯化合物用作毛细管电泳流动相添加剂,利用其对无机阴离子电泳行为的影响探讨超分子化学中分子识别的机理和影响因素。

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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.

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