阿魏酸衍生物的应用及合成

综述了阿魏酸和阿魏酸衍生物在医药、化妆品、食品等方面的广泛应用及阿魏酸酯类、酰胺类、酮类、醚类等衍生物的合成研究进展。通过同传统的化学合成方法的比较说明了生物催化合成方法的优势。     

基于抗血小板聚集的一系列β-丙氨酸衍生物的合成与活性研究

为了寻找新的抗血小板聚集药物,以川芎嗪、β-丙氨酸、阿魏酸及其类似物为起始原料,经过一系列反应,合成了6个川芎嗪芳酸醚β-丙氨酸类衍生物.所有目标化合物均未见文献报道,其结构经1HNMR、13CNMR、IR、MS得到确证.药理结果初步显示,目标化合物血小板抑制率分别为6.4%、27.4%、7.7%、14.8%、37.0...     

吗啉芳酸衍生物的合成

目的：合成吗啉芳酸衍生物并优化其合成工艺。方法：以芳酸酯为起始原料,经Williamson醚化、亲核取代反应和水解反应合成目标化合物。结果：所合成的目标化合物未见文献报道,其结构经IR1、H-NMR1、3C-NMR及MS得到确证。结论：所设计的合成技术简单易行,适合工业化生产。     

阿魏酸衍生物的设计、合成及除草活性

[目的]以天然产物阿魏酸为先导设计合成具有较强除草活性的衍生物.[方法]运用农药分子合理设计原理设计合成阿魏酸酰胺类似物,采用小杯法测定除草活性.[结果]合成了11个新型的阿魏酸衍生物;小杯法测定显示,在400 mg/L质量浓度下,化合物8f和8k的除草活性较好;半抑制浓度测定结果表明:8f对马唐根和茎的IC50值为分...     

D-丙氨酸衍生物的设计、合成及抗血小板聚集活性的研究

以D-丙氨酸、川芎嗪、阿魏酸及其类似物为起始原料,经过一系列反应,合成得到6个川芎嗪芳酸醚类D-丙氨酸衍生物。其结构均经1H-NMR、13C-NMR、MS确证。初步药理结果显示,化合物1a、1b血小板抑制率较高,分别为21.6%、20.6%。     

白藜芦醇乙酰阿魏酸酯的合成

合成了白魏藜芦醇乙酰阿魏酸酯。以阿魏酸为原料与乙酸酐先制得乙酰阿魏酸,再与二氯亚砜反应制得乙酰阿魏酰氯,然后和白藜芦醇反应合成白藜芦醇乙酰阿魏酸酯,并用IR、MS、1H NMR等方法确证了结构。结果表明:该方法具有工艺简单,产率较高,操作方便等优点。     

阿魏酸的合成与应用研究进展

阿魏酸酯作为阿魏酸的衍生物具有多种生物活性,如抗血栓、抗炎、止痛以及调节人体免疫功能等作用而广泛应用于医药、食品、化妆品等领域。本文介绍了阿魏酸酯的合成方法,包括酸醇酯化反应、酰氯醇化反应、酯交换反应、酶催化反应等。同时综述了阿魏酸酯在医药和化学品方面的应用。     

川芎嗪-丁苯酞衍生物的设计、合成及抗血小板聚集活性研究

以邻苯二甲酸酐和川芎嗪为原料,经自由基取代、正丁基锂亲核加成、对甲基苯磺酸催化脱水、Pd/C加氢还原、水解、酯化等反应合成了3个川芎嗪与丁苯酞拼合衍生物,其结构经1HNMR、13CNMR和HR-MS确证.其中(3,5,6-三甲基吡嗪-2-基)甲基-2-戊酰基苯甲酸酯对由腺苷二磷酸(ADP)诱导的血小板聚集活性抑制率IC50为0.26 mmol/L,优于母体化合物川芎嗪和丁苯酞,是具有良好开发前景的候选化合物.     

普拉格雷的合成工艺改进

以1-环丙基-2-（氟苯基）-2-羟基乙酮为起始原料,经酯化、缩合、乙酰化3步合成了抗血栓药物普拉格雷,总收率43.3%。优化了工艺条件,简化了后处理过程,适于工业生产。     

川芎嗪硫化氢供体衍生物的设计、合成及其抗血小板聚集活性研究

依据药物化学中的活性拼接和生物电子等排原理,以4-羟基苯乙酮和川芎嗪为原料,经取代、环化、氧化、酯化、醚化等反应,合成了3个川芎嗪硫化氢供体衍生物,其结构经~1HNMR、~(13)CNMR和HR-MS确证。并采用Born比浊法初步测试了衍生物的体外抗血小板凝集活性,结果表明4-(3-硫代-3H-1,2-二硫杂环戊烯-5-基)苯基-3,5,6-三甲基吡嗪-2-甲酸酯对二磷酸腺苷(ADP)诱导的体外血小板聚集的抑制率IC_(50)为1.16 mmol/L,优于阳性对照物川芎嗪、丁苯酞、依达拉奉和阿司匹林,是值得进一步研究的治疗心脑血管疾病的候选化合物。     

阿魏酸的合成及抗氧化性能的研究

以香草醛和丙二酸为原料、乙酸铵为催化剂、DMF为溶剂、苯为带水剂,合成了阿魏酸。在V（苯）∶V（DMF）=2∶1、乙酸铵用量为6%（以香草醛质量计）、n（香草醛）∶n（丙二酸）=1∶1.4、反应时间为4h的优化条件下,阿魏酸产率达到71.02%。阿魏酸的抗氧化性实验结果表明,阿魏酸对食用油脂有一定的抗氧化能力,其在油脂中的抗氧化能力优于维生素E。     

Anti-Oxidation and Anti-Inflammatory Potency Evaluation of Ferulic Acid Derivatives Obtained through Virtual Screening

Various factors such as ultraviolet rays can cause a continuous threat to our skin, resulting in inflammation or oxidation problems. Ferulic acid (FA), with certain antioxidant and anti-inflammatory properties, is widely used in many cosmetics, even used to treat various diseases in the clinic. In this study, the FA structural skeleton was used to search for FA derivatives. Then, molecular docking, the rule of five, and Veber rules were performed to virtually screen compounds that can bind to proteins with a good drug likeness. DPPH and ABTS were used to evaluate their antioxidant potency and an MTT assay was employed to investigate the toxicities of the compounds, while Griess Reaction System and ELISA were used to judge the concentration variations of NO and different inflammatory factors (TNF-α, IL-1β, and IL-6). Western blotting featured nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) protein expression levels. The trend of the intracellular changes of reactive oxygen species (ROS) was detected by the DCFH-DA method and fluorescence staining. As a result, we found that the ferulic acid derivative S-52372 not only had certain scavenging effects on free radicals in biochemical experiments, but also prevented inflammation and oxidative stress in LPS-stimulated RAW264.7 cells in the cellular environment; intracellular ROS and inflammatory mediators, including iNOS, COX-2, TNF-α, and IL-6, were also suppressed. In a computer prediction, S-52372 owned better water solubility and lower toxicity than FA. This compound deserves further research to find an ideal FA derivative.     

DCC／DMAP 催化制备乙酰阿魏酸乙酯

以4－羟基－3－甲氧基苯甲醛为起始原料,合成了中间产物乙酰阿魏酸,再以N,N－二环己基碳二亚胺（ DCC）和4－二甲胺基吡啶（ DMAP）为催化剂,通过酯化反应制备了乙酰阿魏酸乙酯,各步产物通过红外光谱、质谱和元素分析对其结构进行表征确认。实验结果表明：在室温下,催化剂用量为乙酰阿魏酸用量的3％,反应时间为4 h的条件下,产率达到75％,为最优条件。     

当归芍药散中阿魏酸和芍药苷的毛细管电泳分析

建立了当归芍药散中阿魏酸和芍药苷同时测定的毛细管电泳方法,考察了电泳条件等因素对分析的影响,在石英毛细管(67.0 cm×50μm I.D.(内径)×37μm O.D.(外径),有效长度60.0 cm)上,以pH 5.30的25 mmoL/L磷酸盐缓冲液为背景电解质,毛细管温度20℃,工作电压20 kV,阿魏酸、芍药苷和其它组分间分离完全,阿魏酸和芍药苷的回收率分别为98.89%和101.2%,相对标准偏差(RSD)小于2.3%。本法操作简便,专属性强,结果准确,重现性好。     

The Discovery of Novel Ferulic Acid Derivatives Incorporating Substituted Isopropanolamine Moieties as Potential Tobacco Mosaic Virus Helicase Inhibitors

Target-based drug design, a high-efficiency strategy used to guide the development of novel pesticide candidates, has attracted widespread attention. Herein, various natural-derived ferulic acid derivatives incorporating substituted isopropanolamine moieties were designed to target the tobacco mosaic virus (TMV) helicase. Bioassays demonstrating the optimized A₁₉, A₂₀, A₂₉, and A₃₁ displayed excellent in vivo antiviral curative abilities, affording corresponding EC₅₀ values of 251.1, 336.2, 347.1, and 385.5 μg/mL, which visibly surpassed those of commercial ribavirin (655.0 μg/mL). Moreover, configurational analysis shows that the R-forms of target compounds were more beneficial to aggrandize antiviral profiles. Mechanism studies indicate that R-A₁₉ had a strong affinity (K_d = 5.4 μM) to the TMV helicase and inhibited its ability to hydrolyze ATP (50.61% at 200 μM). Meanwhile, A₁₉ could down-regulate the expression of the TMV helicase gene in the host to attenuate viral replication. These results illustrate the excellent inhibitory activity of A₁₉ towards the TMV helicase. Additionally, docking simulations uncovered that R-A₁₉ formed more hydrogen bonds with the TMV helicase in the binding pocket. Recent studies have unambiguously manifested that these designed derivatives could be considered as promising potential helicase-based inhibitors for plant disease control.     

2-氯烟酸及其衍生物的合成

探索了从烟酸出发合成 2 氯烟酸及其衍生物的方法 ,实验表明 ,这些方法原料易得 ,产物的收率高 ,易于实现工业化生产 ,具有重要实用价值