查询词典 p-phthalic acid

METHODS:Guinea-pigs were sensitized by ovalbumin and the effects of LMWH on the constriction of ileum smooth muscle induced by OA were observed in vitro;The effects of LMWH on the degranulation of pericranium mast cell induced by OA were observed throu gh the passive anaphylaxis ratmodel which was made by vaccinating antiserum at pericranium;Licking response was induced by 4-aminopyridine(4-AP) scat scruff in mice,then the effect of LMWH on licking response was studied the capillary p emeabilty increasing induced by glactal acetic acid and the effect of LMWH on ca pillary pemeability were studied.

用卵白蛋白(ovalbumin，OA)免疫豚鼠造成过敏模型，观察LMWH对OA所致的豚鼠离体回肠平滑肌收缩的影响；在大鼠颅骨骨膜接种抗血清使肥大细胞被动致敏，观察LMWH对OA引起肥大细胞脱颗粒的影响；以4-氨基吡啶诱发小鼠舔体反应，观察LMWH对舔体反应的影响；以冰醋酸使小鼠毛细血管通透性增加，观察LMWH对通透性的影响。

Taking toluene, chlorosulfonic acid and phosphoryl chloride as raw materials, p-toluenesulfonyl was synthesized.

以甲苯、氯磺酸、三氯氧磷为原料，氯化铵为催化剂合成对甲苯磺酰氯。

The optimal reaction conditions were as follows: the molar ratio of propanol to acid was 1:1, the mass ratio of the catalyst used to p-nitrobenzoate was 6%.

合成硝基卡因的最佳工艺条件为：醇酸比为1：1，催化剂的用量为对硝基苯甲酸的6%，在回流温度下反应14h，产率达到79.5%。

Results: Seven compounds were isolated from the ethanol extract of the fruits and identified as oleanolic acid, luteolin-7-O-β-D-glucoside, quercitrin,β-sitosterol-3-O-β-D-glucoside, p-hydroxyphenethyl-β-D-glucoside, D-mannitol and hexitol.

结果：从女贞子的乙醇提取物中分离得到7个单体化合物，分别鉴定为齐墩果酸、木犀草素－7-O-β-D-葡萄糖苷、槲皮苷、β-胡萝卜苷、对羟基苯乙醇－β-D-葡萄糖苷、甘露醇及己六醇。

Synthesis of target compounds namely: to vanillic acid as the starting material with methanol under reflux conditions for 4 - hydroxy -3 - p-methyl, then ether, and nitration, reduction, cyclization reaction 6 - methoxy -7 - benzyloxy-quinazoline -4 - one, and then by the chloride in place of aniline, benzyloxy-off, such as etherification reaction of the target compounds; target compounds with the second and third occurrence of substitution reactions of amines by the TM1, that is, 4 - amino-benzene -6 - methoxy -7 - [2 - hydroxy -3 -(N, N-diethyl amino) oxy c] quinazoline; with ether occurred Ornidazole reaction of TM2, namely, 4 - amino-benzene -6 - methoxy -7 - [2 - hydroxy -3 -(2 - methyl -5 - nitroimidazole) C oxy] quinazoline.

本论文以嘌呤类似物喹唑啉为母核，分别在其4位和7位引入结构多样的取代苯氨基和柔性侧链，设计了一系列4-取代苯胺基-6-甲氧基-7-(2-羟基取代丙氧基)喹唑啉类化合物。目标化合物的合成即：以香草酸为起始原料，与甲醇回流条件下得到4-羟基-3-甲氧基苯甲酸甲酯，然后经过醚化、硝化、还原、环合反应得到6-甲氧基-7-苄氧基喹唑啉-4-酮，然后再经氯化、取代苯胺、脱苄氧基、醚化等反应得到目标化合物；目标化合物与二乙胺发生胺取代反应得到了TM1，即4-苯氨基-6-甲氧基-7-[2-羟基-3-丙氧基]喹唑啉；通过与奥硝唑发生醚化反应得到TM2，即4-苯氨基-6-甲氧基-7-[2-羟基-3-(2-甲基-5-硝基咪唑)丙氧基]喹唑啉。

By ~(31)P NMR, it was found that the racemization of amino acids was minimized. And it seams that L-amino acid has different reaction acticity from the D-amino acids.

其次，从磷化学的角度研究了氨基酸的立体化学对酯交换反应的结构效应，发现了以磷酰基保护的氨基酸以及含磷缩合试剂的方法进行多肽的合成，氨基酸消旋现象很少发生。

Extractable P, K were determined by extracting a subsample of soil of each plot with a double acid extraction.

各小区子土样用双酸提取液提取，测定可浸提磷和可浸提钾。

However, MeJA treatment decreased DIMBOA and p－Hydroxybenzoic acid content of the third leaf significantly, while root DIMBOA content was increased significantly.

2MeSA处理叶片能诱导叶片中AOC基因、β－1，3葡聚糖酶基因（PR2a）基因及根中BX9基因的表达，使第三叶丁布含量降低，根中丁布含量升高，第三叶对羟基苯甲酸含量显著降低，6μL/L的MeSA处理则使根中香草酸含量升高。

This paper deals with a cationic bisamide compound system deinking agent whose intermediate was prepared by using tristearin, isopropylidene glycerol, diethylenetriamine and catalyzed by p-Toluene sulfonic acid and reacted at 140℃ for 2 h.

摘 要：以三硬脂酸甘油酯、二乙烯三胺为原料合成了中间体，经硫酸二甲酯阳离子化制备出双酰胺季铵盐阳离子表面活性剂，再与AEO-9、TX-10复配制得复合脱墨剂。

Tyramine was synthesiaed from p-thydroxybenzaldehyde through condensation with nitromethane and then reduction with tin powder and hydrochloric acid.

以对羟基苯甲醛和硝基甲烷为原料，经缩合和锌粉、盐酸还原合成酪胺，两步反应总收率61％。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。