4-(取代嘧啶-2-基)-1-芳磺酰基氨基脲化合物的合成与表征

以取代的苯磺酰肼与(取代嘧啶-2-基)-氨基甲酸苯酯在非亲核性碱存在下合成了12个4-(取代嘧啶-2-基)-1-芳磺酰基氨基脲化合物5和3个5与碱形成的有机盐5as, 5bs和5cs. 所有合成化合物均经过元素分析和¹H NMR的结构确证. ¹H NMR数据证明, 在5as～5cs中, 磺酰氨基脲起到提供质子的作用.     

Synthesis of new 1-substituted 4-(2-phenylquinazolin-4-yl)-and 4-(2-phenylquinazolin-4-ylidene) thiosemicarbazides

Two new 1-substituted 4-(2-phenylquinazolin-4-yl)-and 4-(2-phenylquinazolin-4-ylidene) thio-semicarbazides were formed by a multistep domino reaction of imidoyl isothiocyanate derivative with 1,1-di-R-hydrazine in acetone solution. Application of hydrazine hydrate under the same reaction conditions afforded 4-(2-phenylquinazolin-4(3H)-ylidene)-2-(propen-2-yl)-1-(propan-2-ylidene) thio-semicarbazide via a six-step triple-component domino reaction. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1688–1693, November, 2008.     

1-取代酰基-4-磷酰基氨基硫脲及其1, 3, 4-恶二唑杂环衍生物 的合成

合成了1-取代酰基-4-磷酰基氨基硫脲(5),以及由(5)衍生的环化产物2-磷酰氨基-5-苯基(或氰乙基)-1,3,4-恶二唑(6),它们的结构经^1HNMR,IR和元素分析的证实。初步生测结果表明,部分化事物具有一定的植物生长调节活性和除草活性。     

Synthesis and antibacterial activity of 1-(2,4-dichlorobenzoyl)-4-substituted thiosemicarbazides, 1,2,4-triazoles and their methyl derivatives

A series of 1-(2,4-dichlorobenzoyl)thiosemicarbazides, s-triazoles and their methyl derivatives have been synthesised by condensation of 2,4-dichlorobenzoyl hydrazine with aryl isothiocyanates. Subsequent ring closure of the substituted thiosemicarbazides yielded the s-triazoles, and reaction with methyl iodide resulted methyl derivatives. All the compounds were subjected to in vitro testing against two gram-positive and two gram-negative bacteria. Antibacterial activity was found to be moderate to good in most of the compounds.     

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     

Poly（ethylene glycol）-supported Liquid-phase Parallel Synthesis of Di（aryloxyacetyl）thiosemicarbazides

An efficient poly(ethylene glycol) (PEG)-supported liquid-phase parallel approach to di(aryloxyacetyl)thiosemicarbazides is described. PEG-bound phenol reacted with chloroacetic acid to afford PEG-bound phenyloxyacetic acid, which was readily converted into corresponding phenyloxyacetyl chloride. Subsequent nucleophilic substitution with ammonium thiocyanate followed by addition of aryloxyacetic acid hydrazides gave PEG-bound di(aryloxyacetyl)thiosemicarbazides, which were easily cleaved to give the resulting library of 1-aryloxyacetyl-4-(4‘-methoxylcarbonylphenyloxyacetyl)thiosemicarbazides in good to high yield and high purity.     

Synthesis and Biological Evaluation of 1-(2-(6-Methoxynaphthalen-2-yl)-6-methylnicotinoyl)-4-Substituted Semicarbazides/Thiosemicarbazides as Anti-Tumor Nur77 Modulators

Nur77 is an orphan nuclear receptor that participates in the occurrence and development of a variety of tumors. Many agonists of Nur77 have been reported to have significant anticancer effects. Our previous studies have found that the introduction of bicyclic aromatic rings, such as naphthalyl and quinoline groups, into the N′-methylene position of indoles’ Nur77 modulators can effectively improve the anti-tumor activity of the target compounds. Following our previous studies, a series of novel 1-(2-(6-methoxynaphthalen-2-yl)-6-methylnicotinoyl)-4-substituted semicarbazide/thiosemicarbazide derivatives 9a–9w were designed and synthesized in four steps from 6-methoxy-2-acetonaphthone and N-dimethylformamide dimethylacetal. All compounds were characterized by ¹H-NMR, ¹³C-NMR and HRMS, and their anti-tumor activity on various cancer cell lines such as A549, HepG2, HGC-27, MCF-7 and HeLa are also evaluated. From the series of compounds, 9h exhibited the most potent anti-proliferative activity against several cancer cells. Colony formation and cell cycle experiments showed that compound 9h inhibited cell growth and arrested the cell cycle. Additionally, 9h leads to the cleavage of PARP. We initially explored the mechanism of 9h-induced apoptosis and found that compound 9h can upregulate Nur77 expression and triggered Nur77 nuclear export, indicating the occurrence of Nur77-mediated apoptosis. These results suggested that 9h may be a promising anti-tumor leading compound for the further research.     

Synthesis and evaluation of AChE inhibitory activity of 5,6-diaryl-1,2,4-triazinyloxyacetyl-4-substituted thiosemicarbazides,triazoles and N-benzylidene derivatives

A series of 1,2,4-triazinyl thiosemicarbazides, triazoles and N-benzylidene derivatives have been synthesized by condensation of 5,6-diphenyl-1,2,4-triazin-3-yloxyacetyl hydrazine with aromatic aldehydes and aryl isothiocyanates. Subsequent ring closure of thiosemicarbazides yielded the triazoles. All the compounds were subjected to in vitro testing of cholinesterase inhibitory action. Percentage inhibition was found to be moderate to good in a few of the compounds.     

One-pot Synthesis of 1- Aryloxyacety l - 4- (4′-nitrophenyloxyacetyl) - thiosemicarbazides under Phase Transfer Catalysis and Microwave Irradiation

The 1-aryloxyacetyl-4-(4′-nitrophenyloxyacetyl)-thiosemicarbazides (3a-h) are synthe- sized via reaction of 4-nitrophenyloxyacetyl chloride with ammonium thiocyanate and aryloxyacetic hydrazides (2a-h) under phase transfer catalysis and microwave irradiation in excellent yield.     

Synthesis and structure of 1-substituted 1-Oxo-1,2-dihydro-4H-3,1-benzoxaphosphorins

1-X-1-Oxo-1,2-dihydro-4H-3,1-benzoxaphosphorins (X = CH₂Cl, Ph, and OH) were obtained by reacting ortho-(butoxymethoxymethyl)phenylmagnesium bromide with derivatives of chloromethylphosphonic and chloromethylphosphinic acids, followed by intramolecular alkylation. X-Ray diffraction was used to study the molecular and crystalline structure of one of these compounds (with X = OH).Institute of Physiologically Active Substances, Russian Academy of Sciences, 142432 Chernogolovka. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 9, pp. 2174–2180, September, 1992.     

4-(1-硫杂-2亚氨基-3,4-二氮杂-1,4-亚丁基)-4-脱氧阿维菌素B1a的合成

以阿维菌素B1a为原料经选择性C-5羟基保护、氧化合成5-O-烯丙氧羰基-5-氧代-5-脱氧阿维菌素B1a (3), 然后与N-取代氨基硫脲偶联, 缩合产物经MnO2氧化关环、脱保护得到10个未见文献报道的4-(1-硫杂-2-亚氨基- 3,4-二氮杂-1,4-亚丁基)-4-脱氧阿维菌素B1a (7a～7j). 目标化合物结构经1H NMR, 13C NMR和MS确证.     

1－取代苯基－4－烃基氨基硫脲的合成及抗菌作用

由烃基异硫氰酸酯与取代邻肼基苯甲酸类化合物的加成反应，合成了１０种新的取代氨基硫脲类化合物，其结构经元素分析、ＩＲ、￣１ＨＮＭＲ等确证。初步生理活性实验表明，对金黄色葡萄球菌和大肠杆菌都有不同程度的杀菌和抑菌作用。     

Synthesis,spectral, thermal and electrochemical characterization of metal(II) complexes with 1-S-methylcarbodithioate-4-substituted thiosemicarbazides

1-S-Methylcarbodithioate-4-substituted thiosemicarbazides (L¹-L³) have been prepared and confirmed by spectral data and elemental analysis. Co(II), Ni(II), Cu(II), Cd(II) and Zn(II) complexes with L¹-L³ have been prepared and characterized by elemental and thermal analyses, molar conductance, magnetic moment, as well as spectral data (IR, ¹H NMR, mass and electronic spectra). The molar conductance data reveal that the chelates are non-electrolytes. The IR and ¹H NMR spectra showed that L¹-L³ are deprotonated in the complexes and act as binegative SNNS donors. The electronic spectra of the complexes as well as their magnetic moments provide information about geometries. Thermogravimetric analysis of some complexes suggests different decomposition steps and ending with metal sulfide as final product. The redox properties of the complexes are explored by cyclic voltammetry.     

1聚代苯基—4—烃基氨基硫脲的合成及抗菌作用

由烃基异硫氰酸酯与取代邻肼基苯甲醚类化合物的加成反应，合成了１０种新的取代氨基硫脲类化合物，其结构经元素分析、ＩＲ、＾１ＨＮＭＲ等确证。初步生理活性实验表明，对金黄色葡萄球菌和大肠杆菌都有不同程度的杀菌和抑菌作用。     

微波炉加热法合成3-芳基-1, 2, 4-三唑啉-5-硫酮

本文报道了微波炉加热法合成3-芳基-1, 2, 4-三唑啉-5-硫酮,研究了反应时间, 溶液用量, 微波功率及芳基对反应产物收率的影响。     

Synthesis of triazolidines and triazole using DMAP

An efficient methodology has been developed for the synthesis of 1,2,4-triazolidine-3-thione and 3-ethoxy-5-phenyl-4H-1,2,4 triazole using N,N-dimethylpyridine-4-amine (DMAP). Aldehydes and thiosemicarbazide were reacted in water at ambient temperature in presence of DMAP and provided corresponding products in good to moderate yield.     

Efficient Synthesis and Plant-Growth Regulating Activities of 1-Aryloxyacetyl-4-(2-benzofuroyl)- semicarbazides

Under grinding and solvent-free conditions via a one-pot procedure, the reaction of 2-benzofuroyl chloride with ammonium thiocyanate and aryloxyacetetic acid hydrazide afforded 1-aryloxyacetyl-4-(2-benzofuroyl)-thiosemicarbazide. Not isolating, the resulting thiosemicarbazides were further ground with HIO₄·H₂O to give a series of new 1-aryloxyacetyl-4-(2-benzofuroyl)-semicarbazides in high yields. Structures of compounds are confirmed by elemental analyses and IR and ¹H NMR spectra.     

氨基硫脲缩(4-醛基吡啶)氟硅酸盐的合成和晶体结构

氨基硫脲缩(4-醛基吡啶)4-C5H4NCHNNHCSNH2(HL)和氟硅酸钾K2S iF6反应制备了标题化合物[H(4-C5H4NCHNNHCSNH2)]2S iF6.2H2O(1),用元素分析和X射线单晶衍射对其结构进行了表征.结构解析表明,化合物1属于单斜晶系,P21/c空间群,晶胞参数为:a=0.674 3(2)nm,b=1.349 6(3)nm,c=1.235 7(3)nm,β=94.283(4),°V=1.121 4(5)nm3,Z=2,Mr=540.61,Dc=1.607 g/cm3.μ=0.371 mm-1,F(000)=560,R1=0.036 8,wR2=0.105 4.该化合物由质子化的正一价氨基硫脲缩(4-醛基吡啶)阳离子和氟硅酸根阴离子以及水分子组成.     

3,5-二羟基-2,4,6-三硝基苯酚氨基脲铵盐半水合物的合成、晶体结构和热分解特性

A new compound, semicarbazidium 3,5-dihydroxy-2,4,6-trinitrophenolate hemihydrate （SCDHTNP·0.5H2P）, was synthesized by the reaction of the aqueous solutions of semicarbazide with trinitrophloroglucinol. Its structure was determined by single-crystal X-ray diffraction analysis and characterized by elemental analysis, FTIR, DSC and TG-DTG techniques. The crystal is monoclinic with space group P21/n and the empirical formula C7H9N6O10.50. The unit cell parameters are： a= 1.3791（3） nm, b=0.9256（2） nm, c=2.0468（4） nm,β= 106.93（3）°, V=2.4995（9）nm^3, Z=8, Dc= 1.835 g/cm^3, Mr=345.20, F（000）= 1416, s=0.945,μ（Mo Ka）=0.174 mm^-1. The final R and wR are 0.0401 and 0.0896. Its structure consists of two semicarbazidium cations, two 3,5-dihydroxy-2,4,6-trinitrophenolate anions and one crystal water molecule, which are interconnected by electrostatic forces and hydrogen bonds into layer structure, making the title compound very stable. Under a linear heating rate, the thermal decomposition processes of SCDHTNP·0.5H2O have one endothermal dehydration stage and two intensive exothermic decomposition stages at 178-241℃ to evolve abundant gas products.