Preparation and the biodistribution study of [131I]-5,10,15,20-tetrakis(4-hydroxyphenyl)porphyrin and 5-(4-aminophenyl)-10,15,20-triphenylporphyrin

[¹³¹I]-5,10,15,20-tetrakis(4-hydroxyphenyl)porphyrin and [¹³¹I]-5-(4-aminophenyl)-10,15,20-triphenylporphyrin (¹³¹I-TPPOH and ¹³¹I-TPPNH₂) were prepared and their biodistribution properties were evaluated in normal Kunming (KM) mice and SMMC-7721 tumor-bearing BALB/c mice. The optimized labeling yields were 98 and 96 % for ¹³¹I-TPPOH and ¹³¹I-TPPNH₂, respectively. They were stable in vitro saline and in vivo. Both compounds had a specific affinity to liver and lung, and mainly metabolized through liver. They showed a time-dependent accumulation and retainable characteristics in SMMC-7721 tumor. These results supported their potential value for targeted tumor therapy agents.     

5-(4-烟酸酰亚胺基)苯基-10,15,20-三苯基卟啉及其锌配合物的合成及性质研究

合成了未见文献报道的5-(4-烟酸酰亚胺基)苯基-10,15,20-三苯基卟啉配体(H₂P)及其锌配合物(ZnP), 并通过紫外-可见光谱、红外光谱、核磁共振氢谱、元素分析等测试方法对化合物的结构加以确认, 研究了配体和配合物的荧光光谱的变化和电化学性质. 热分析研究表明, 卟啉配体及配合物显示了很高的热稳定性, 超过390 ℃才开始分解.     

新型尾式5-(4-烟酸酰氧基己氧基)苯基-5,10,15-三苯基卟啉及其配合物的合成、表征和电化学性能

合成了新型尾式5-(4-烟酸酰氧基己氧基)苯基-5,10,15-三苯基卟啉及其Mn, Fe, Co, Ni, Cu, Zn配合物, 并用红外光谱、紫外-可见光谱、核磁共振氢谱、元素分析和质谱对化合物的结构进行了确认, 通过循环伏安法研究了化合物的电化学性质. 结果表明, 卟啉配体与其配合物的紫外光谱、红外光谱和核磁共振氢谱都有很大区别, 锰与铁配合物的循环伏安曲线和配体及镍、铜、锌的配合物不同, 除了卟啉环发生氧化还原反应外, 还发生了金属离子的氧化还原反应.     

4-(4-氨基苯基)-3-吗啉酮的合成

以乙醇胺为起始原料,通过环合、Goldberg藕联、还原,三步反应合成利伐沙班关键中间体4-(4-氨基苯基)-3-吗啉酮;该方法反应条件温和、生产成本低、绿色环保,具有良好的工业化前景。     

Synthesis of 5-(4-aminophenyl)-2-(arylamino)-1,3,4-thiadiazoles and their schiff base derivatives as antimycobacterial agents

The condensation reaction of 5-(4-aminophenyl)-N-aryl-1,3,4-thiadiazol-2-ylamines with salicyl-aldehyde, 3-hydroxybenzaldehyde, 4-hydroxybenzaldehyde, 5-bromosalicylaldehyde, 5-chlorosalicyl-aldehyde, 4-methoxybenzaldehyde, 3-nitrobenzaldehyde, and 4-nitrobenzaldehyde results in series of new Schiff bases. The synthesized compounds were tested for their antimicrobial efficiency against Mycobacterium smegmatis PTCC 1307 in vitro. All compounds showed significant antiproliferative activity against M. smegmatis.     

5-[4-(1-Hydroxyethyl)phenyl]-10,15,20-triphenylporphyrin as a probe of the transition-state conformation in hydrolase-catalyzed enantioselective transesterifications

5-[4-(1-Hydroxyethyl)phenyl]-10,15,20-triphenylporphyrin (1a) and zinc porphyrin 1b were designed and synthesized to experimentally examine the validity of the transition-state model previously proposed for the lipase-catalyzed kinetic resolution of secondary alcohols. The lipases from Pseudomonas cepacia (lipase PS), Candida antarctica (CHIRAZYME L-2), Rhizomucor miehei (CHIRAZYME L-9), and Pseudomonas aeruginosa (lipase LIP) exhibited excellent enantioselectivity (E >100 at 30 degrees C). Subtilisin Carlsberg from Bacillus licheniformis (ChiroCLEC-BL) also showed high enantioselectivity for 1a (E = 140 at 30 degrees C), and the thermodynamic parameters were determined: DeltaDeltaH = -6.8 +/- 0.8 kcal mol(-1), DeltaDeltaS = -13 +/- 3 cal mol(-1) K(-1). Lipases and subtilisin showed R- and S-preference for 1, respectively. The mechanisms underlying the experimental observations are explained in terms of the transition-state models. The large secondary alcohol 1 is a powerful tool for investigating the conformation of the transition state of the enzyme-catalyzed reactions. The fact that 1 was resolved with high enantioselectivity strongly suggests that the gauche conformation, but not the anti conformation, is taken in the transition state, in agreement with the transition-state models involving the stereoelectronic effect.     

Synthesis,characterization and RNA-binding properties of a novel ruthenium(II) complex coordinated by 5-pyridine-10,15,20-triphenylporphyrin

A novel ruthenium(II) complex, [dibipyridyl-(5-pyridine-10,15,20-tri-phenylporphyrin)] ruthenium(II) chloride, (1), has been synthesized and characterized by elementary analyzing, ESI-MS and ¹³C-NMR, as well as spectroscopy. The electronic spectra and emission spectra have been utilized to study the interaction of this ruthenium(II) complex (1) with the total RNA of liver cells, and the results show that there was obviously hypochromism and a red shift was observed for the Soret absorption and IL transition in electronic spectra of ruthenium(II) complex (1) in the presence of total RNA of liver cells, and the hypochromism of Soret absorption and IL absorption of complex (1) is 25% and 10%, respectively. The studies on the steady-state emission spectra of complex (1) show that the fluorescent of (1) in the 550–700 nm range increased obviously in the presence of total RNA of liver cells. These data, together with that of electronic spectra, shown that the ruthenium(II) complex (1) can bind to RNA excellently.     

1-三氟乙酰基-2-(4-氨基苯基)肼的合成

以对硝基苯肼和三氟乙酸酐为原料,通过酰化法合成了1-三氟乙酰基-2-(4-硝基苯基)肼,将其还原得1-三氟乙酰基-2-(4-氨基苯基)肼。其结构经^1HNMR,IR,MS和元素分析确证。研究了反应条件对收率的影响及规律,得出较佳的合成条件。     

Synthesis and characterization of trifluoromethyl heterocyclic compounds: 4-hydroxy-4-methyl-5-(2,2,2-trifluoro-1-trifluoromethylethyl)-1,3-thiazoline derivatives

We report the synthesis of two new bis-trifluoromethyl 4-hydroxy-1,3-thiazoline, and one thiazole derivatives from 5,5,5-trifluoro-4-(trifluoromethyl)-3-penten-2-one (1) by anti-Michael addition and condensation with thioamides. Spectroscopical properties, such as IR and Raman, ¹H, ¹³C and ¹⁹F NMR, as well as the crystalline structure of the 2-methyl-derivative are described. The crystalline structure shows short intermolecular F–F contacts. The 2-phenyl thiazole derivative was obtained by dehydration of the correspondent hydroxythiazoline, attempts to obtain the 2-methyl derivative were unsuccessful.     

Convenient Synthesis of 2,7-Diamino-9,9- bis(4-aminophenyl)fluorene

For the synthesis of 2,7-diamino-9,9-bis(4-aminophenyl)fluorene 2 , first 2,7-dinitro-9,9-bis(4-aminophenyl)fluorene 1 was synthesized by the reaction of 2,7-dinitro-9-fluorenone with aniline and aniline hydrochloride. 2 was obtained by the reduction of 1 with hydrazine hydrate and 10% palladium on carbon.     

Spectroscopic properties of ethyl 5-(4-aminophenyl)-3-amino-2,4-dicyanobenzoate

The luminescence properties of ethyl 5-(4-aminophenyl)-3-amino-2,4-dicyanobenzoate (EAADCy) have been studied using steady-state, time-resolved spectroscopic techniques, electrochemical measurements and semiempirical calculations. A series of photophysical measurements and quantum-chemical calculations were carried out with EAADCy in search of an evidence of the occurrence of the aniline group rotation. Studies in different solvents, as well as semiempirical calculations, indicate that conformations with donor and acceptor groups coplanar absorb and emit at wavelengths that are longer than those observed for donor–acceptor groups oriented orthogonally. The values of the dipole moments of planar and perpendicular form of molecule under study were estimated from solvatochromic shifts of absorption and fluorescence spectra as a function of the solvent dielectric constant and refractive index. Experimentally calculated changes of the dipole moment values are in fair agreement with semiempirical computational predictions.     

酰氨基硫脲及其相关杂环衍生物的研究III.1-(5-甲基异唑-3-甲酰基)-4-芳基氨基硫脲及其相关杂环衍生物

Eight 1-(5-methylisoxazol-3-ylcarbonyl)-4-substituted thiosemicarbazides (I), eight 3-(5-methylisoxazol-3-yl)-4-substituted-1,2,4-triazoline-5-thiones (II), seven 2-arylamino-5-(5-methylisoxazol-3-yl)-1,3,4-thiadiazoles, and five 2-arylamino-5-(5-methylisoxazol-3-yl)-1,3,4-oxadiazoles were prepared from isoxazole III and aryl isocyanates. The derivatives I and II showed antitubercular activity and promoted the growth of plumule of wheat in preliminary experiments     

Synthesis and characterization of soluble polyimides from 2,2-bis(4-aminophenyl)cycloalkane derivatives

New aromatic diamines [(1) and (2)] containing polycycloalkane structures between two benzene rings were synthesized by HCl-catalyzed condensation reaction of aniline hydrochloride and corresponding polycycloalkanone derivatives. The structures of diamines were identified by ¹H-NMR, ¹³C-NMR, FTIR spectroscopy, and elemental analysis. The polyimides were synthesized from the obtained diamines with various aromatic dianhydrides by one-step polymerization in m-cresol. The inherent viscosities of the resulting polyimides were in the range of 0.34–1.02 dL/g. The polyimides showed good thermal stabilities and solubility. All the polymers were readily soluble in N-methyl-2-pyrrolidone, m-cresol, tetrachloroethane, etc. Some of them were soluble even in chloroform at room temperature. The glass transition temperatures were observed in the range of 323–363°C, and all of the polymers were stable up to 400°C under nitrogen atmosphere. © 1999 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 37: 3449–3454, 1999     

5-邻硝基苯-10,15,20-三苯基卟啉-环糊精超分子体系研究

在中性磷酸盐缓冲溶液中,以紫外-可见分光光度法、荧光光谱法和1HNMR法研究了一种人工合成的非水溶性卟啉5-邻硝基苯-10,15,20-三苯基卟啉(简称o-NTPP)与3种母体环糊精α-CD、β-CD、γ-CD和β-CD的两种衍生物2,3,6-三-甲氧基-β-CD(TM-β-CD)、羧甲基-β-CD(CM-β-CD)之间相互作用形成的超分子体系,结果表明o-NTPP与TM-β-CD形成了1∶2的包结物,而与其它4种环糊精均形成1∶1的包结物。利用双倒数曲线法计算了o-NTPP-CD超分子体系的包结常数(k),同时对包结常数大小进行了比较,从而判断出5种环糊精对o-NTPP包结能力的大小,其中TM-β-CD表现出最强的包结能力。     

Novel fluorescent pH sensor based on 5-(4-carboxy-phenyl)-10,15,20-tris(phenyl)-porphyrin

A novel fluorescent pH sensor based on 5-(4-carboxy-phenyl)-10,15,20-tris(phenyl)-porphyrin, as sensing agent, has been developed. The carboxyl functionalized asymmetric porphyrin has been synthesized and characterized by high performance liquid chromatography (HPLC), thin layer chromatography (TLC), proton nuclear magnetic resonance (¹H NMR), Fourier transform infrared spectroscopy (FT-IR), ultraviolet–visible (UV–vis), emission, excitation and mass spectrometry (MS) spectra. Optical and fluorescence behaviors were investigated in relationship with variation of acid concentration in the range of acid pH from 1.5 to 5.5. Upon increasing the acidity of the solution, the decrease of the fluorescence intensity was noticed, as a linear function of pH. Different metal ions were tested to put into evidence the changes regarding the fluorescence intensity, but the fluorescence obtained results revealed no significant interference on pH determination. The conclusion is that the proposed fluorescent sensor can measure pH in acid range in the presence of different metal ions making this sensor a proper one for pH determinations in leaching solutions of the recyclable processes of valuable metals.     

5-(4-丙氨酸丁氧苯基)-10,15,20-三苯基卟啉及其配合物的合成和性质

本文首次合成了一种 新型的单取代的丙氨酸四苯基卟啉，５－（４－丙氨酸丁氧苯基）－１０，１５，２０－三苯基卟啉（Ｈ２Ｌ），及其Ｃｏ（ｄ２）、Ｃｕ（Ⅱ）、Ｚｎ（Ⅱ）配合物用元素分析，电子光谱，红外光谱，荧光光谱和激光拉曼光谱进行表征。