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1.
由邻羟基苯乙酮合成中间体3二甲氨基1(2羟基苯基)1丙烯酮,再与酸酐反应得3酰化苯并吡喃4酮,探讨了溶剂和催化剂对酰化反应的影响.  相似文献   

2.
2,4二氯氟苯合成方法的改进张运晓1)田青2)寇娴1)王桂红1)何晓红1)1)河南医科大学有机化学教研室郑州4500522)河南省化工研究所郑州450052关键词2,4二氯氟苯;合成;改进2,4二氯氟苯是合成喹诺酮类抗生素环丙氟哌酸(环丙沙星)...  相似文献   

3.
姚建华 《贵阳医学院学报》1998,23(3):298-299,302
拟定合理的合成路线,制得4氯6氨基苯酚2磺酸。将该产品与变色酸偶联得氯磺酚S。测得其与Nb(Ⅴ)配合物的摩尔吸收系数为33×104L·mol-1·cm-1,与文献值完全符合。  相似文献   

4.
一个新的二氢黄酮甙   总被引:2,自引:0,他引:2  
从乌拉尔甘草(Glycyrrhizauralensis)根茎中分得一个新的二氢黄酮甙,经化学和波谱分析,将其结构鉴定为:甘草素4′O[βD(3O乙酰基)呋喃芹糖(1→2)]βD吡喃葡萄糖甙(liquiritigenin4′O[βD(3Oacetyl)apiofuranosyl(1→2)]βDglucopyranoside)。  相似文献   

5.
止吐药昂丹司琼的合成   总被引:2,自引:0,他引:2  
以1 ,3环己二酮为起始原料,形成单苯腙后,经过环合、甲基化得9甲基1 ,2 ,3 ,9四氢4 H咔唑4酮(3) ,与吗啉及多聚甲醛进行 Mannich 反应,再与2甲基咪唑反应、成盐得标题化合物,总收率为491 % 。  相似文献   

6.
目的:研究合欢皮(CortexAlbizia)的化学成分及其生物活性。方法:用色谱法和光谱解析方法对树皮的亲脂性化学成分进行分离和结构测定。结果:共得6个化合物:(1)1(29羟基二十九碳酸)甘油酯,(2)1(24羟基二十四碳酸)甘油酯,(3)乙酸Δ12乌苏烯3β醇酯,(4)二十二碳酸乙酯,(5)β谷甾醇,(6)α菠甾醇3OβD葡萄糖甙。结论:化合物(1)为新化合物,(2)为首次以单体形式获得,(3)为首次从合欢属植物中获得的乌苏烷型三萜,(4)为首次从合欢属植物中获得。  相似文献   

7.
目的:本文研究了六种查耳酮的制备方法,查耳酮是合成黄酮类化合物的中间体。方法:在氢氧化钠催化下,苯乙酮与苯甲醛反应。结果:制备1-苯-3-(4-二甲氨基苯基)-2-丙烯酮(5),1-苯-3-(3-硝基苯基)-2-丙烯酮(6),1-苯-3-(2-羟基苯基)-2-丙烯酮(7),1-苯基-3-(4-甲氧基苯基)-2-丙烯酮(8),1-(2,4-二甲氧基苯基)-3-(4-甲氧基苯基)-2-丙烯酮(9)和1  相似文献   

8.
化合物1(2乙胺基乙酰胺基3,4二甲氧基)苄基异喹啉具有较强的抗心律失常作用,毒性远低于利多卡因,以其为先导物,将胺乙酰胺基作为4′位取代基,设计合成了8个1(4胺乙酰胺基)苄基四氢异喹啉类化合物(Ⅶ1~Ⅶ8),均未见文献报道  相似文献   

9.
建立了反相高效液相色谱法检测正常人口服尼卡地平片剂后的血药浓度。样品经硼酸缓冲液(pH90)碱化后,用正己烷正丁醇混合溶剂(12∶1,V/V)提取,以C18化学键合硅胶为固定相,乙腈KH2PO4缓冲液(0015mol/L,pH=55)三乙胺为流动相,尼莫地平为内标,在236nm波长定量检测。血药浓度在5~200ng/ml范围内线性良好,最低检测浓度为25ng/ml。日内(n=7)及日间(n=5)测定相对标准偏差分别小于54%和64%,血样测定回收率为928%1008%。用本法监测了10名健康人口服盐酸尼卡地平片剂后不同时间的血药浓度变化,测得血浆中尼卡地平浓度在16±03h达到峰值1098±387ng/ml,T1/2=535±228h,血药浓度曲线下面积为3221±696ng·h/ml。  相似文献   

10.
从 1o乙酰基2,3,5三o苯甲酰基4溴β D呋喃核糖出发,在溴化汞催化作用下,合成了 3 个 4取代的核苷化合物,其中 2 个化合物未见文献报道。  相似文献   

11.
Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P < 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (>0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P <0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P < 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.  相似文献   

12.
Objective: To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods: SD rats served as both donors and recipients. 4℃ sodium lactate Ringer's was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava (IVC) inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results: Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion: This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.  相似文献   

13.
FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…  相似文献   

14.
Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P< 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P< 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.  相似文献   

15.
Shock wave lithotripsy (SWL) is a treatment of choice for upper urinary stones. However, this procedure is inappropriate for obese patients because the focus is often unable to reach the target owing to the limited focal distance in shock wave source. Although treating such patients in a blast path may increase the application length of shock wave source, it's difficult to find this path on the lithotripter monitor. For this reason, we invented an adjustable calibration marker in order to set an effective focus in the shock wave hath.  相似文献   

16.
Excess production of reactive oxygen species(ROS)of mitochondrion mediated by hyperglycemia is the common pathogenesis of angiopathic complications of diabetes.TCM holds that the damp from the dysfunction of spleen.kidney and liver is the causative factor of complications of diabetes.This is similar to the mechanism of Ros resulting in angiopathic complications of diabetes.When the angiopathic complications of type II diabetes mellitus(T2DM)are difierentiated as caused by turbid damp in TCM can be explained as ROS.Since the obstruction of pathogenic damp in channels and collaterals is said to be the main pathogenesis,the treating principle should be dissolving the damp to remove the obstruction.  相似文献   

17.
INTRODUCTION Obesity is a complex emergent problem, which can be possibly solved not only by the diet but also by the life style and promotion of a constant physical exercise. 1, 2 No doubt careful attentions must be given to the nutritional condition of obese people, the dietary habits, the somatic build (i.e. distribution of fat mass) and the organic functions linked to formation of the fat mass. All the parameters should be constantly monitored before, during and after a diet treatment. 3, 4, 5  相似文献   

18.
People with dysglycemia are at high risk for atherosclerotic diseases. This study aims at investigating the atherosclerotic vascular damage in dysglycemia and its metabolic origin in Tibetan population.  相似文献   

19.
Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.  相似文献   

20.
In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.  相似文献   

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