产物

L-prolinamide/PPTS system was developed to catalyze Robinson annulation of 1,3-cyclohexanedione derivatives. Using this system, the functionalized carbon chain of Wieland-Wiescher ketone could be synthesized in high enantioselectivity, which was a useful synthon for structural diversity of total synthesis of natural product.

二、发现了L-prolinamide／PPTS体系可以催化Ronbinson环化1，3-环己二酮衍生物，实现含季碳且具有多官能团侧链的Wieland-Wiescher酮高对映选择性的合成，为天然产物结构多样性的合成奠定了基础。

The second reaction we tested was diastereoselective Michael-Aldol annulation of -keto ester 121 with methacrolein to give a key intermediate for synthesizing (--Huperzine A.

通过对反应条件的筛选，我们得到的最好的结果是以-乳酸苄酯为手性辅基的β-酮酯121i为底物，以(1R， 2R)-环己二胺衍生的手性胍85i为催化剂，以无水四氢呋喃为溶剂，在-20℃反应，得到的产物的de值为73.2%。

As a result, oxide property of the metal is essential to success of anodic bonding.

若能生成与两种材料均可结合的产物，则连接可以实现，故金属的氧化物性质是阳极焊成功与否的关键。

The metabolization of almond essence oil inside human body child is natural anodyne.

杏仁精油在人体内的代谢产物又是天然的镇痛剂。

Under the condition, the anolyte of Na2FeO4 in the concentration range from 0.39-0.47mol/L could be obtained by electrolyzing the iron anode in 16mol/LNaOH solution during 4-6h in the temperature of 308K.

通过研究固体和液体高铁酸盐以及它们的绿色分解产物的化学以及电化学性能，得出以下结论：一、当FeO_4~(2-)溶液的碱浓度越小，加热温度越高时，生成绿色溶液的时间越短。

Other equilibrium phases contain-ing CaO may be monticellite and anorthite.

在渣蚀带内层，反应产物为六铝酸钙和钙铝黄长石。

Besides, HIF-1 can quickly induce a lot of expressions and the adjustment of anoxia-induced genes, so as to enhance the hypoxia-induced genetic transcription and increase the expressions, and engender physiological effects, such as adjusting the transcription of EPO genes to increase their production, thereby the red blood cells quantity is enlarged, which strengthens the ability of oxygen transportation and mitigates anoxia; adjusting VEGF genetic transcription to engender more blood capillaries, consequently the transportation and supply of oxygen and substance of energy source are strengthened; adjusting the glycolytic enzyme to enhance glycolysis ability under anoxemia condition and increase energy supply; functioning on HO-1 genes in vascular smooth muscle cells to produce HO-1, which can engender NO and CO as pneumatic signal molecules to activate the guanylate cyclases, thus CGMP level is improved to make the vascular smooth muscles chalasia, to restrain platelet agglutination, so that theblood flow and vascular permeability are increased, and the anoxic tissues obtain ample oxygen supply, etc..

在低氧环境中，HIF-1可以被很快诱导大量表达并介导低氧诱导基因的调控，使低氧诱导基因转录增强，表达产物增多，产生生理效应。

Give the product of the reaction of anthracene and O2 with a photosensitizer in the presence of ultraviolet light.

答：写出蒽与氧气在光敏剂和紫外线照射的条件下的产物，光敏剂起到什么作用

Write the structure of the product of the low temperature reaction of anthracene with Br2.CCl4 and propose a mechanism for its formation.

答：1写出在低温下蒽与Br2-CCl4的反应产物，并写出反应历程。

Results Agarose gel electrophoresis proved that the length of PCR product was about 7 000 bp. SDS-PAGE showed that the target protein was highly expressed. Compared with those of control, the anthranilate synthase and tryptophan synthase activities of expressed product increased by 2.7 and 3.2 folds respectively.

结果 凝胶电泳可见代PCR扩增产物大小约为7000bp，SDS-PAGE鉴定目的蛋白分别得到了表达，邻氨基苯甲酸合成酶和色氨酸合成酶的活性分别比对照提高了2.7和3.2倍。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了