Synthesis and Anticancer Activity of 1,2,3-Triazole Fused N-Arylpyrazole Derivatives

A novel series of triazole derivatives 11a–11j is synthesized. Structures of the products are confirmed by ¹H and ¹³C NMR, and mass spectral data. The anticancer activities of compounds 11a–11j are evaluated against three human cancer cell lines (MCF-7, A549, and A375) using the standard MTT assay in vitro, using doxorubicin as the positive control. All the compounds exhibit significant activity against cancer cell lines. The compounds 11a, 11d, 11e, 11g, and 11j demonstrate more potent activity than the positive control.

     

1, 2, 3-三氮唑衍生物的合成

随着1,2,3-三氮唑衍生物在医药、农药、材料等领域的广泛应用,其合成引起了广大研究者的关注。本文阐述了1,2,3-三氮唑衍生物合成的发展历史,着重综述了近十年来1,2,3-三氮唑衍生物合成的发展情况,主要包括铜催化的有机叠氮化合物与末端炔的1,3-偶极环加成反应合成1,4-二取代-1,2,3-三氮唑、钌催化的有机叠氮化合物与末端炔反应合成1,5-二取代-1,2,3-三氮唑、有机催化剂法、金属炔化物及活化炔参与法等合成1,2,3-三氮唑衍生物的一些新成果。文章还介绍了一些合成方法在医药领域的应用,并对重要的反应机理作了分析,最后对该类化合物的合成作了总结并展望了未来发展方向。     

Design,Synthesis, and Anticancer Activity of 1,2,3-Triazole Likned Thiazole-1,2-isoxazole Derivatives

Russian Journal of General Chemistry - A series of novel 1,2,3-triazole linked thiazole-1,2-isoxazole derivatives has been designed, synthesized and characterized by 1H and 13C NMR, and mass...     

含均三唑环的新型联苯四唑衍生物的合成及抗菌活性

通过4-芳基-5-(4-吡啶基)-1,2,4-三唑-3-硫醇(1)和2-三苯基甲基-5-(4′-溴甲基联苯-2-基)-四唑(5)反应, 制得一系列新的S-烷基化产物(6), S-烷基化产物在酸性条件下脱保护, 得到了14个未见文献报道的含1,2,4-三唑类联苯四唑(7a～7n)衍生物. 结构经元素分析, IR, NMR及FAB-MS确认. 对大肠杆菌、链球菌、枯草杆菌、金黄色葡萄球菌初步抑菌试验证明, 多数化合物表现了较好的抑菌活性.     

Synthesis and Biological Activities of Novel 1,2,4-Triazole Derivatives Containing 1,2,3-Thiadiazole Ring

A series of novel 1,2,4-triazole derivatives containing 1,2,3-thiadiazole ring was designed and synthesized. Their structures were confirmed by IR, 1^H NMR, high resolution mass spectrometer（HRMS） and electrospray ionization-mass spectromcter（ESI-MS） combined with melting points and elemental analysis. Preliminary bioassays indi- cate that these compounds exhibit good insecticidal activity against Aphis laburni at 100 μg/mL, especially compound 6b shows mortality of no less than 95%. Most of the compounds show good activities against tobacco mosaic virus（TMV） with different modes in vivo at 100 μg/mL. Compound 6d standed out, showing a good insecticidal activity and very high induction effects against TMV in vivo. Collectively, our data demonstrate a new strategy for insect and virus control.     

Synthesis and Antimicrobial and Antioxidant Activities of 1,2,3-Triazole-Tethered Xanthone Derivatives

Russian Journal of Organic Chemistry - A new series of 1,2,3-triazole-tethered xanthone derivatives have been prepared from propargyl­oxyxanthone and various aromatic azides via 1,3-dipolar...     

Design,Synthesis, and Anticancer Activity of 1,2,3-Triazole Linked 1,2-Isoxazole-imidazo[4,5-b]pyridine Derivatives

Russian Journal of General Chemistry - A series of novel 1,2-isoxazole-pyridobenzimidazole is synthesized. Structures of the products are supported by 1H and 13C NMR, and mass spectra. All...     

Synthesis,Characterization, and Anticancer Activity of Novel Imidazo[1,2-a]pyridine Linked 1,2,3-Triazole Derivatives

Russian Journal of General Chemistry - A novel series of imidazo[1,2-a]pyridine linked 1,2,3-triazole derivatives has been designed, synthesized and the structures have been confirmed by 1H and 13C...     

新型香豆素类衍生物的合成及其抗菌活性

以水杨醛及其衍生物为原料,通过缩合、水解、酰化、酯化四步反应合成了4个新的香豆素类衍生物-取代香豆素-3-酰水杨酸(4a～4d),其结构经uv,1H NMR,IR和元素分析表征.初步抗菌活性测试结果表明,4a-4d均有一定程度的抗真菌活性.     

Microwave Assisted Green Synthesis of Pyrazole, 1, 2, 3‐ Triazole Based Novel Benzohydrazones and Their Antibacterial Activities

A series of novel pyrazole, triazole based benzohydrazones ( 7a‐l ) were synthesized via conventional and microwave methods in the presence of acetic acid catalyst. Microwave method provided green and economical approach towards the synthesis of novel Schiff bases ( 7a‐l ). Some intermediates and all the final compounds were characterized by NMR, mass, and elemental analysis. The compounds were screened for their in vitro antibacterial activity against Gram‐negative bacteria (Escherichia coli and Pseudomonas aeruginosa) and Gram‐positive bacteria (Staphylococcus aureus and Bacillus cereus). Compounds 7e and 7g showed good antibacterial activity.     

微波辐射下含1,2,3-三唑基双酰基硫脲化合物的合成研究

采用微波辐射法与常规室温磁搅拌法,将含有1,2,3-三唑基的酰基异硫氰酸酯2a～2b与二胺类化合物3a～3e反应,合成了一系列双酰基硫脲化合物4a～4e和5a～5e.微波辐射法具有反应时间短、产率高、副反应少、易于分离提纯等优点.所有目标化合物的结构经元素分析、IR和1H NMR确证.     

新型酞嗪酮-5-甲酰胺衍生物的合成及其抗癌活性

以糠醛为原料，依次与偏二甲基肼发生成腙反应、与马来酸酐发生D-A反应、芳环化、水解及与肼和取代苯肼反应得到呔嗪酮-5-羧酸，随后经酰胺化反应合成了17个新型的呔嗪酮-5-甲酰胺衍生物(6a~6g和9a~9j)，总收率21%~27%，其结构经¹H NMR, ¹³C NMR及HR-MS(ESI)表征。采用MTT法考察了化合物对人胰腺癌细胞(Capan 1)、人结直肠腺癌细胞(SW620)、人结肠癌细胞(HCT116)和人乳腺癌细胞(MDA-MB-231)的增殖抑制活性。结果表明：化合物9j对Capan-1细胞的增殖具有良好的抑制活性，IC₅₀为6.65 μM。     

新型16-E-苯亚甲基甾体衍生物的合成及其抗癌活性

以雄烯二酮为底物,通过2,3-二氯-5,6-二氰基-1,4-苯醌脱氢和羟醛缩合反应合成了一系列新的16-E-苯亚甲基甾体衍生物（4a~4k）,其结构经¹H NMR, ¹³C NMR和HR-MS(ESI)表征。并采用MTT法考察了化合物对人体宫颈癌细胞（Hela）和乳腺癌细胞（MCF-7）的增殖抑制活性。结果表明：浓度为30 μg·mL^-1时,化合物4b具有较强的抑制MCF-7细胞增殖的活性,抑制率46%。     

Phloretamide及其衍生物的合成与抗氧化活性

以3-(4-羟基苯基)丙烯酰胺（Phloretamide）为先导化合物,取代苯丙烯酸为原料,经取代反应和酰胺化反应制得苯丙烯酰胺类化合物(2a~2d); 2经氢化还原反应合成了4个Phloretamide衍生物(3a~3d); 1, 2和3经去甲基化反应分别制得〖WTHZ〗〖STHZ〗1e, 2e~2f和3e~3f〖STBZ〗〖WTBZ〗。其中,3-(3,4,5-三羟基苯基)丙烯酰胺(2f), 3-(2,3,4-三羟基苯基)丙酰胺(3e)和3-(3,4,5-三羟基苯基)丙酰胺(3f)为新化合物,其结构经¹H NMR, ¹³C NMR和ESI-MS表征。初步抗氧化活性测定结果表明：c为10 μmol·L^-1时,2b, 2f和3f具有较好的自由基清除活性,其清除率分别为66.8%, 59.8%和69.4%,均优于阳性对照咖啡酸,咖啡酸苯乙酯和Vc。     

Microwave Assisted Synthesis of Fused Thiazoles in Multicomponent System and Their in vitro Antitumor,Antioxidant, and Antimicrobial Activities

A novel series of thiazolopyrimidines, thiazolopyrimidinones, imidazolothiazoles, and 1‐thiazole‐5‐pyrazolone was synthesized under microwave irradiation. Most of the synthesized compounds were screened in vitro antitumor, antioxidant, and antimicrobial activities.     

Design,Synthesis, Antimicrobial,and Antioxidant Activity of Dimers of Chromene Containing 1,2,3-Triazole Derivatives Bearing an Alkyl Spacer

A new series of chromene based 1,2,3-triazole derivatives has been synthesized by incorporating biologically active heterocyclic rings containing chromene and triazole moieties in one molecular structure. All newly synthesized compounds are characterized by ¹H and ¹³C NMR, mass, and IR spectra. The title compounds are tested for their activity against different bacterial and fungal strains, and antioxidant activity. Several compounds are determined to be potent antimicrobial and antioxidant agents.

     

新型1,2,4-三氮唑类化合物的合成及其杀菌活性

以α-乙酰基-γ-丁内酯为原料,经亲核取代、开环、闭环和亲核取代反应制得1-氯-1-氯乙酰基环丙烷（5); 5与1,2,4-三氮唑反应制得1-三唑基乙酰-1-氯代环丙烷(6); 6与一系列卤代化合物进行亲核取代反应制得6个新化合物(7a~7f); 7a~7f经还原反应合成了6个新型的1,2,4 三氮唑类化合物(8a~8f),其结构经¹H NMR, ¹³C NMR, LC-MS和元素分析表征。采用生长速率法研究了化合物的杀菌活性。结果表明：用药量为50 μg·mL^-1时,化合物8f对立枯丝核菌和禾谷镰孢菌的抑制率分别为56.8%和43.8%,化合物8e对黄瓜枯萎病菌的抑制率为57.9%。     

Estradiol-Based Salicylaldehyde (Thio)Semicarbazones and Their Copper Complexes with Anticancer,Antibacterial and Antioxidant Activities

A series of novel estradiol-based salicylaldehyde (thio)semicarbazones ((T)SCs) bearing (O,N,S) and (O,N,O) donor sets and their Cu(II) complexes were developed and characterized in detail by ¹H and ¹³C nuclear magnetic resonance spectroscopy, UV–visible and electron paramagnetic resonance spectroscopy, electrospray ionization mass spectrometry and elemental analysis. The structure of the Cu(II)-estradiol-semicarbazone complex was revealed by X-ray crystallography. Proton dissociation constants of the ligands and stability constants of the metal complexes were determined in 30% (v/v) DMSO/H₂O. Estradiol-(T)SCs form mono-ligand complexes with Cu(II) ions and exhibit high stability with the exception of estradiol-SC. The Cu(II) complexes of estradiol-TSC and its N,N-dimethyl derivative displayed the highest cytotoxicity among the tested compounds in MCF-7, MCF-7 KCR, DU-145, and A549 cancer cells. The complexes do not damage DNA according to both in vitro cell-free and cellular assays. All the Cu(II)-TSC complexes revealed significant activity against the Gram-positive Staphylococcus aureus bacteria strain. Estradiol-TSCs showed efficient antioxidant activity, which was decreased by complexation with Cu(II) ions. The exchange of estrone moiety to estradiol did not result in significant changes to physico-chemical and biological properties.