3,5-二叔丁基-4羟基苯基丙酸甲酯合成技术优化研究

研究了2,6-二叔丁基苯酚和丙烯酸甲酯的Michael加成反应机理。考察了不同催化剂配比对该反应体系的影响,确定较优的催化剂配比为KOH与NaOH物质的量比为4,n(M^(+))/n(酚)=3%。在该催化剂配比下,对原料配比、滴加速率、反应压力、反应温度、反应时间等工艺参数进行了系统的研究,得出3,5-二叔丁基-4羟基苯基丙酸甲酯的最优合成工艺参数。该结果可用于指导实际生产中的操作优化。

Synthesis Hexadecyl 3-{4-[2-Hydroxy-3(isopropylamino)propoxy] phenyl}propionate as Potential Ligand for Liposome Targeting to Ischemic Myocardium

Novel hexadecyl 3-{4-[2-hydroxy-3(isopropylamino)propoxy]phenyl}propionate(HPP)was synthesized and its effect on delivery of liposomes into cultured cardiomyocytes was examined.The structure of HPP was characterized by IH NMR,1R and MS.The amount of cardiomyocytes uptake of HPP-liposome was 3.9-fold higher than plain-liposome,and the increase was 6.2-fold when hypoxia happens.It indicated that HPP was a potential ligand for liposome targeting to ischemic myocardium.

Stereoselective Synthesis of 2-(4-Hydroxyphenyl)-3-hydroxymethyl-1,4-benzodioxane-6-aldehyde—The Key Intermediate of Sinaiticin

2-(4-Hydroxyphenyl)-3-hydroxymethyl-1,4-benzodioxane-6-aldehyde 8,the key intermediate of sinaiticin 10,was synthesized in 6 step from caffeic acid 4 and 4- hydroxybenzsaldehyde 1.the coupling reaction is the key step.

Role of α-amino-3-hydroxy-5-methyl-4-isoxazole-propionic acid receptor regulation in stress-induced pain chronification

Persistent postsurgical pain is a serious issue in public health, which has received increased interest in recent years. Previous studies have reported that psychological factors promote the development of chronic postsurgical pain. However, it is unclear how chronification of postsurgical pain occurs. The α-amino-3-hydroxy-5-methyl-4-isoxazole-propionic acid receptor(AMPA) phosphorylation in the central nervous system plays a critical role in synaptic plasticity and contributes to central sensitization and chronic pain development. Here, we discuss the role of AMPA receptor regulation in stress-induced pain chronification after surgery.

Effect of Temperature on the Reaction of 2-(N-acetylamine)-3-(3,5-di-<i>tert</i>-butyl-4-hydroxyphenyl)-propionic Acid with Oxygen in an Alkaline Condition

Results of oxidation 2-(N-acetylamine)-3-(3,5-di-tert-butyl-4-hydroxyphenyl)-propionic acid oxygen depend on temperature. At 55℃?- 60℃, 2,4-di-tert-butylbicyclo(4,3,1)deca-4,6-dien-8-(N-acetylamine)-3,9-dion-1-oxa is formed. The constitution is based on dates of spectrums 1Н and 13С NMR. At 95℃?- 97℃, mixtures of 2,4-di-tert-butylbicyclo(4,3,1)deca-4,6-dien-8-(N-acetylamine)-3,9-dion-1-oxa and of 6,8-di-tert-butyl-3-(N-acetylamine)spiro(4,5)deca-1-oxa-5,8-dien-2,7-dione are produced. Structures are calculated by the method of Hartrii-Foka. Values of enthalpies and of entropies allow to assume dynamic isomerism.

UPLC-MS/MS法测定槲寄生抗肿瘤成分1,7-bis(4-hydroxyphenyl)-1,4-heptadien-3-one的含量

目的建立超高效液相色谱-串联质谱法(UPLC/MS/MS)测定槲寄生中具有抗肿瘤活性的新化合物1,7-bis(4-hydroxyphenyl)-1,4-heptadien-3-one(BHPHD)的含量,并通过多因素方差分析比较产地与寄主对药材抗肿瘤成分含量的影响。方法以Thermo Hypersil GOLD C18(50 mm×2.1 mm,1.9μm)为分离色谱柱,乙腈-体积分数0.1%甲酸水溶液为流动相,流速0.2 m L·min-1,梯度洗脱,质谱检测器,电喷雾正离子,多反应监测模式,监测离子对m/z 295.09→106.99。结果BHPHD在质量浓度为0.050~2.5 mg·L-1内线性关系良好,精密度、重复性、稳定性试验的RSD均≤3.5%,平均加样回收率(n=9)为97.2%(RSD=1.6%)。结论该方法可满足定量要求。多因素方差分析表明槲寄生中BHPHD的含量受产地影响较大(P<0.01),受寄主影响不大。

Synthesis of Gingerenone C and 5-Hydroxy-1-(4′-hydroxy-3-methoxyphenyl)-7-(4′′-hydroxyphenyl)-3-heptanone

The two diarylheptanoids (E)-1-(4-hydroxy-3-methoxyphenyl)-7-(4-hydroxyphenyl) hept-4-en-3-one 1 (Gingerenone C) and (±)-5-hydroxy-1-(4-hydroxy-3-methoxyphenyl)-7-(4- hydroxyphenyl)-3-heptanone 2 were synthesized from vanillin 3 and 4-hydroxybenzaldehyde 9.

Synthesis and Crystal Structure of 4-(4,6-dimethoxyl -pyrimidin-2-yl)-3-thiourea Carboxylic Acid Methyl Ester

The title compound 4-（4,6-dimethoxylpyrimidin-2-yl）-3-thiourea carboxylic acid methyl ester was synthesized by the reaction of 2-amino-4,6-dimethoxyl pyrimidine, potassium thiocyanate and methyl chloroformate in ethyl acetate. Single crystals suitable for X-ray measurement were obtained by recrystallization with the solvent of dimethyl formamide at the room temperature. The structure was characterized by elemental analysis and IR and determined by X-ray diffraction analysis＇ Crystallographic data： C9H12N4O4S, Mr = 272.29, monoclinic, space group C2/m with a = 1.6672（3）, b = 0.66383（12）, c = 1.1617（2） nm, β = 109.275（2）°, V = 1.2136（4） nm^3, Dc = 1.490 g/cm^3,μ = 0.281 mm^-1, F（000） = 568, Z = 4, R1 = 0.0341and wR2 = 0.1042.

Synthesis and Crystal Structure of (Z)-Methyl-3-methoxy-2-{2-[(4-(E-3-p-tolylacryloyl)phenoxy)methyl]phenyl}acrylate

The title compound,(Z)-methyl-3-methoxy-2-{2-[(4-(E-3-p-tolylacryloyl)phenoxy)-methyl]phenyl}acrylate,was synthesized and determined by X-ray single-crystal diffraction.The crystal belongs to the triclinic system,space group P1 with a=8.0157(8),b=12.5748(13),c=13.3768(14)Å,α=64.770(2),β=75.720(2),γ=89.784(2)°,μ=0.085 mm^(-1),Mr=442.49,V=1174.1(2)Å3,Z=2,Dc=1.252 g/cm^(3),F(000)=468,T=294(2)K,R=0.0603 and wR=0.1498 for 2644 observed reflections with I〉2σ(I).X-ray diffraction analysis reveals that the single crystal contains strong non-classical hydrogen bonds.The preliminary bioassay showed that the title compound exhibits inhibitory activity against the Pseudoperoniospora cubensis and Rhizoctonia solani at the test concentration of 200 mg/L.

Synthesis of 1,7-Bis(4-hydroxyphenyl)-3-hydroxy-1,3-heptadien-5-one

A facile synthesis of the analog of curcumin. 1,7-bis (4-hydroxyphenyl)-3-hydroxy-1.3-heptadien-5-one 1 was achieved. The key step was completed through the regioselective condensation of ketone 5 and acyl chloride 7.

Synthesis and Crystal Structure of a New Quinazolinone Compound 2,3-Dihydro-2-(2-hydroxyphenyl)-3-phenyl-quinazolin-4(1H)-one

A new quinazolinone compound 2,3-dihydro-2-(2-hydroxyphenyl)-3-phenyl- quinazolin-4(1H)-one 3 ([C20H16O2N2]?C2H5OH, Mr = 362.42) and compound 2-(2-hydroxy- benzylidene-amino)-N-phenyl-benzamide 2 (C20H16O2N2, Mr = 316.34) were prepared from a precursor of 2-amino-N-phenyl-benzamide 1 (C13H12ON2, Mr = 212.25). Compound 3 was characterized by single-crystal X-ray diffraction analysis. The crystal belongs to orthorhombic, space group Pbca with a = 1.2889(11), b = 1.6170(14), c = 1.7729(15) nm, V = 3.695(6) nm3, Z = 8, F(000) = 1536, Mr = 362.42, Dc = 1.303 g/cm3, μ(MoKα) = 0.087 mm-1, R = 0.0447 and wR = 0.0879. The crystal structure analysis indicates that the title compound has a two-dimensional network structure formed by hydrogen bonds and electrostatic interactions.

Synthesis and Crystal Structure of Methyl 2-(Diphenylamino)-4-phenyl-1,3-thiazole-5-carboxylate

The title compound, methyl 2-（diphenylamino）-4-phenyl-1,3-thiazole-5-carboxylate, was synthesized and studied by single-crystal X-ray diffraction method. The structure of the product was confirmed by IR, 1H- and 13C-NMR spectroscopy and elemental analysis. These experimental studies were supported by quantum mechanical calculations. The structure was solved in monoclinic, space group P21/c with a = 9.573（3）, b = 19.533（7）, c = 9.876（3）, β = 92.35（4）°, V = 1845.2（10）3, T = 85（2） K, Z = 4, R = 0.040 and wR = 0.089 for 6424 observed reflections with I2σ（I）.

Synthesis and Crystal Structure of 1,4-Dimethyl-2,5-di{[2’-(3-pyridylmethylamino-formyl)phenoxyl]methyl}benzene Perchlorate

The title compound, 1,4-dimethyl-2,5-di { [2′-（3-pyridylmethylaminoformyl）phenoxyl]- methyl}benzene perchlorate （C36H36Cl2N4O12, Mr = 787.59）, has been synthesized and structurally determined by single-crystal X-ray diffraction. The crystal crystallizes in the orthorhombic system, space group Pbca with a = 14.366（4）, b = 15.159（4）, c = 16.443（5）A, V = 3580.9（17）/A3 Z = 4, De = 1.461 g/cm^3, /t = 0.253 mm^-1, F（000） = 1640, R = 0.0618 and wR = 0.1525 for 1615 observed reflections （I 〉 2σ（I））. In the structure of the title compound, a two-dimensional supramolecular layer is formed via intermolecular hydrogen bonding interactions.

Systematic pharmacology analysis of Sodium 8-(((carboxymethyl)amino)methyl)-4',7-bishydroxy-isoflavone-3'-sulfonate

The purpose of this study is to use the newly synthesized molecule Sodium 8-(((carboxymethyl)amino)methyl)-4',7-bishydroxy-isoflavone-3'-sulfonate(M)as a research object,the pharmacological mechanism of the molecule was analyzed by using a series of Systematic pharmacology methods.The results show that the M molecule has a higher drug-like DL value of 0.59 and better molecular property parameters,namely Hdon=4,Hacc=10 and AlogP=0.94;A total of 11 M molecules related targets,namely F2,ESR1,AR,F10,CA2,DPP4,CCNA2,PRSS1,CDK2,GSK3B and PTPN1;A total of 140 diseases are associated with M molecule targets,and these diseases are mainly related to cancer and cardiovascular diseases;A total of 52 pathways involve the pharmacological mechanisms of M molecules,which are mainly related to cancer and other related diseases;GO-enriched analysis showed that these targets are closely related to the regulation of peptidase activity and biological processes such as blood coagulation and hemostasis.This article clearly demonstrated the pharmacological mechanism of M molecule,which provides references for exploring the pharmacological mechanism of new compounds.

3,5-二叔丁基-4-羟基苯基丙酸-1-膦-2,6,7-三氧双环-[2,2,2]辛基-4-甲酯的合成新工艺

以 3 - (3 ,5 -二叔丁基 - 4-羟基苯基 )丙酸甲酯 (简称 3 ,5 -甲酯 )、亚磷酸三乙酯、季戊四醇为原料 ,二丁基氧化锡为催化剂合成了标题化合物。考查了催化剂、反应温度、反应时间及物料配比等因素的影响 ,实验结果表明 :以 0 .1 mol季戊四醇为准 ,第一步和第二步反应温度分别为 1 1 0～ 1 2 0°C和 1 40°C,催化剂用量为 0 .6 g,反应时间为 5 h,n(季戊四醇 )∶n(亚磷酸三乙酯 )∶n(3 ,5 -甲酯 ) =1∶ 1∶ 1 .1 0 ,在此条件下 ,收率在 95 %以上。通过元素分析、红外光谱分析。

双[3-(3,5-二叔丁基-4-羟基苯基)丙酸]三甘醇酯的合成与表征

以3-(3,5-二叔丁基-4-羟基苯基)丙酸甲酯(简称3,5-甲酯)与三甘醇为原料,有机锡为催化剂,通过酯交换法在无溶剂的条件下合成了双[3-(3,5-二叔丁基-4-羟基苯基)丙酸]三甘醇酯。通过实验考察了反应温度、催化剂及催化剂用量、反应时间及物料配比等因素对反应的影响。结果表明,最佳的反应条件是:反应温度为125～135℃,催化剂为有机锡,催化剂用量为0.50g,反应时间为3.5h,3,5-甲酯与三甘醇摩尔比为2.10∶1。在此条件下,收率在94%以上,产品熔点为106～107℃,通过元素分析、红外光谱分析、核磁氢谱对产品进行了结构表征。

用酯交换法合成3-(3′,5′-二叔丁基-4′-羟基苯基)丙酸环己酯

以 3(3′ ,5′二叔丁基 4′羟基苯基 )丙酸甲酯 (简称 3,5甲酯 )与环己醇为原料 ,二丁基氧化锡为催化剂合成了 3(3′ ,5′二叔丁基 4′羟基苯基 )丙酸环己酯酯。考查了催化剂、反应温度、反应时间及物料配比等因素的影响 ,实验结果表明 ,反应的最佳条件为 :3,5甲酯投料量 2 9.2 g ,反应温度 130～ 14 0℃ ,催化剂0 .3g ,反应时间 5h ,3,5 甲酯与环己醇摩尔比 1∶1.1。在此条件下 ,产物收率在 98%以上 ,并通过元素分析、红外光谱分析、核磁氢谱对产品进行组成结构表征。

3-(3,5-二叔丁基-4-羟基苯基)丙酰亚磷酸季戊四醇酯的合成

3-(3,5-二叔丁基-4-羟基苯基)丙酰亚磷酸季戊四醇酯是一种抗氧化性和热稳定性优良的抗氧剂,在聚烯烃中得到广泛的应用。以3-(3,5-二叔丁基-4-羟基苯基)丙酸甲酯(简称3,5-甲酯)、亚磷酸三苯酯、季戊四醇为原料,碳酸钾为催化剂合成了3-(3,5-二叔丁基-4-羟基苯基)丙酰亚磷酸季戊四醇酯。考查了催化剂、反应温度、反应时间及物料配比等因素的影响,确定了反应的最佳条件。在此条件下,收率在95％以上。并通过元素分析、红外光谱分析、核磁氢谱对产品进行组成结构表征。

二缩三乙二醇双β-(3-叔丁基-4-羟基-5-甲基苯基)-丙酸酯的合成

以3-(3-叔丁基-4-羟基-5-甲基苯基)-丙酸甲酯(Ky250)和二缩三乙二醇(TEG)为原料,有机锡为催化剂,采用酯交换法合成了抗氧剂二缩三乙二醇双β-(3-叔丁基-4-羟基-5-甲基苯基)-丙酸酯(抗氧剂245)。考察了物料配比、反应温度、催化剂用量及反应时间等因素对收率的影响。结果表明,较佳的反应条件为:n(Ky250):n(TEG):n(有机锡)=2.1:1:0.004,反应温度185℃,反应时间6 h。在此条件下,产品收率86%以上,产品含量大于99%,采用FTIR对产品结构进行了表征。

3-(3,5-二叔丁基-4-羟基苯基)丙酸十八碳醇酯合成工艺改进

3- ( 3,5 -二叔丁基 - 4-羟基苯基 )丙酸十八碳醇酯 (抗氧剂 1 0 76)是以 3- ( 3,5 -二叔丁基 - 4-羟基苯基 )丙酸甲酯、十八碳醇为原料 ,以二辛基氧化锡为催化剂 ,在二甲苯溶剂中合成的。利用正交实验研究了影响反应的因素 ,如原料配比、催化剂用量、反应温度、反应时间等 ,从而确定了最佳反应条件。最佳工艺条件为 :原料配比为 n[3- ( 3,5 -二叔丁基 - 4-羟基苯基 )丙酸甲酯 ]∶n(十八碳醇 )=1∶ 1 ,催化剂二辛基氧化锡用量为 3- ( 3,5 -二叔丁基 - 4-羧基苯基 )丙酸甲酯的 1 .5 % (质量分数 ) ,于 1 30～ 1 35°C反应 4h,收率可达 97%以上 ,且后处理简单。产品经红外光谱及熔点分析 。