N-(2-(取代苯并噻唑-2-氨基甲酰基)-取代苯基)-4-氟苯甲酰胺衍生物的合成及生物活性

以对氟苯甲酸和取代邻氨基苯甲酸为起始原料,设计并合成11个含氟基苯并噻唑基邻甲酰氨基苯甲酰胺类化合物,其结构经1 H NMR、13C NMR、IR及元素分析确证.初步生物活性测试结果表明,在500 mg/L浓度下部分化合物对烟草花叶病毒(TMV)有一定抑制作用.采用MTT法进行化合物抑制PC3及Bcap-37癌细胞体外活性测试,结果表明所合成的化合物具有不同程度的抑制PC3和Bcap-37癌细胞活性,其中化合物4d在10 μmol·L-1浓度下对PC3和及Bcap-37的抑制率分别为73.2％和68.1％.     

新型含苯并噻唑基双酰胺衍生物的合成及其抗菌活性

以邻甲基苯甲酸和取代邻氨基苯甲酸为起始原料,设计并合成了10个未见文献报道的含苯并噻唑基双酰胺类衍生物,其结构经1H NMR,13C NMR,IR及元素分析表征。初步的抗菌活性测试结果表明,在500 mg.L-1浓度下部分化合物对黄瓜花叶病毒(CMV)有一定抑制作用。     

新型N-[2-(取代苯并噻唑-2-氨基甲酰基)苯基]取代氟基苯甲酰胺的合成及其抗癌活性

2,4-二氟苯甲酸或2-氟苯甲酸与二氯亚砜经酰氯化反应,再与邻氨基苯甲酸反应后在醋酸酐中闭环,最后与取代苯并噻唑胺反应合成了9个新型的N-[2-(取代苯并噻唑-2-氨基甲酰基)苯基]取代氟基苯甲酰胺(6a～6i),其结构经1H NMR,13C NMR,IR和元素分析表征。采用MTT法对6a～6i进行抑制PC3癌细胞体外活性测试,结果表明6a～6i具有不同程度的抑制PC3癌细胞活性,其中10μmol.L-16b对PC3的抑制率为69.9%。     

新型2-[4-(取代苯甲酰氨基)苯基]苯并噻唑的合成及生物活性

以2-氨基苯硫酚和对氨基苯甲酸为起始原料,设计并合成了5个新型的苯并噻唑衍生物(4a~4e),其结构经1H NMR,IR,MS(EI)和元素分析表征。采用菌丝生长速率法初步研究了4a~4e的生物活性。结果表明:用药浓度为100 mg·L~(-1)时,4b和4c对西瓜枯萎病菌有一定抑制效果,抑制率分别为47%和43%。     

双酰胺类化合物的合成及生物活性研究

为了寻找高活性农药先导化合物,以甲霜灵为先导,通过活性基团拼接原理,设计合成了一系列未见文献报道的双酰胺类化合物,其结构经1H NMR、13C NMR和HRMS表征.初步的生物活性测试结果表明:在50 mg/L测试浓度下,化合物5j对黄瓜霜霉病显示出85%的抑制率;在500 mg/L剂量下,多数目标化合物对粘虫表现出较好的杀虫活性,其中化合物5b,5f,5g,5h,5i,5l对粘虫的致死率高达100%,在250 mg/L测试浓度下,化合物5f,5h,51对粘虫的致死率为50%.     

2-取代苯并噻唑衍生物的合成

以2-甲基苯并噻唑或2-乙基苯并噻唑,2-碘乙醇或1,4-二溴丁烷为原料,合成了4个新的2-取代苯并噻唑衍生物,其结构经^1H NMR,IR,MS及元素分析表征。     

双酰胺类衍生物的合成及抑菌活性

以对氯苯甲酸和取代邻氨基苯甲酸为起始原料,设计并合成9个未见文献报道的含苯并噻唑基双酰胺类化合物,其结构经1H NMR、13C NMR、IR及元素分析确证。初步生物活性测试结果表明,部份化合物具有一定的抑菌活性。     

2-取代苯并噻唑类化合物的合成研究进展

作为生物的二级代谢产物中常见的结构单元,2-取代苯并噻唑及其衍生物在医药、农业等领域有非常广泛的应用。该类化合物的合成备受广大研究者的关注。经过多年的发展,合成此类化合物的方法已比较成熟。本文通过比较目前报导的各种合成方法,按照合成原料的不同进行了分类和总结。此外,还分析了各种合成方法的不足和缺陷,并对此类化合物的合成研究前景进行了展望。     

2-取代苯并噻唑类衍生物合成方法研究的新进展

2-取代苯并噻唑类衍生物在工业、农业、医药等领域有广泛的应用前景,因此这类衍生物合成的新方法备受关注.笔者以邻氨基苯硫酚、芳香邻氨基二硫化物、硫代酰胺、硫脲与邻卤苯胺等反应原料为基础,从引入硫原子的方法及反应机理的角度综述了近几年合成2-取代苯并噻唑类衍生物的新方法.     

取代噻吩双酰胺类化合物的设计、 合成及生物活性

利用中间体衍生化方法, 将噻吩环引入到双酰胺类化合物中, 合成了一系列取代噻吩双酰胺类化合物1~3; 目标化合物的结构经核磁共振波谱、 红外光谱及元素分析确认. 生物活性测试结果表明, 化合物1在600 mg/L剂量下对小菜蛾具有良好的杀虫效果, 致死率均为100%, 其中化合物1a和1e在20 mg/L剂量下对小菜蛾的致死率仍达到60%以上; 改变双酰胺结构中的吡唑环得到化合物2和3, 其杀虫活性消失, 说明该类化合物中吡唑环结构对杀虫活性具有关键作用.     

Synthesis and Biological Activity of Novel Anthranilic Diamides Containing N-Substituted Arylmethylene Moieties

A series of novel anthranilic diamides containing N-substituted arylmethyl moieties was designed and synthesized, in which the bond distance and conjugation pattern between pyrazole and pyridine rings contained in Chlorantraniliprole were changed. Their structures were confirmed by JH NMR, IR, elemental analysis or high resolution mass spectromentry{HRMS）, and the conformation of compound 4d was confirmed by X-ray diffraction. The preliminary bioassay results indicate that all the target compounds exhibited moderate insecticidal activity against oriental armyworm at 200 mg/L and some of them presented favorable antitumor activities against human lung cancer cells（A549）, liver cancer cells（BelT402） and colon cancer celIs（HCT-8） in vitro by microculture tetrazolium（MTT） method, among which compound 6j afforded the best anti-proliferative activity at 5μg/mL.     

Targeted Synthesis of Anthranilic Diamides Insecticides Containing Trifluoroethoxyl Phenylpyrazole

Aseries of novel anthranilic diamides analogues(9a-9t) containing trifluoroethoxyl pyrazole moiety was designed and synthesized and their insecticidal bioactivities against Mythimna separata(Walker, M. separata) and Plutellaxylostella (P. xylostella) were evaluated. The structures of the title compounds were confirmed by ¹H NMR, ¹³C NMR and HRMS. Preliminary insecticidal activities showed that some of the title compounds possessed good to excellent bioactivities towards M. separata and P. xylostella. Compounds 9c and 9t exhibited 100% mortality rate against M. separate at 0.2 mg/L. For the P. xylostella, the synthesized compounds(9c-9e, 9i and 9o) showed 70%, 80%, 75%, 65% and 60% insecticidal activities at 1×10^-6 mg/L, respectively, higher than that of chlorantraniliprole(0). Based on excellent insecticidal activities, the mode of the action was tested by the calcium-imaging technique, the results of which demonstrated that the novel compounds shared the same target with chlorantraniliprole. The binding pose of the most active compound 9t in RyRs of P. xylostella was predicted by molecular docking, which showed that compound 9t interacted with the residues Glu140(A) and His147(A) via hydrogen bond.     

含1,2,3-噻二唑的邻甲酰胺基苯甲酰胺类化合物的合成、晶体结构与生物活性

以取代邻氨基苯甲酸为起始原料, 设计并合成了一系列未见文献报道的含1,2,3-噻二唑的邻甲酰胺基苯甲酰胺类化合物. 所有化合物的结构均经元素分析和1H NMR确证, 并且采用X射线单晶衍射分析方法测定了化合物7g的结构. 初步的生物活性试验结果表明, 部分化合物具有一定的杀菌活性.     

Design,Synthesis and Biological Activities of Novel Anthranilic Diamides Containing Dihydroisoxazoline and Isoxazole

Anthranilic diamides are one of the most important classes of modern agrochemical insecticides. To discover new structures with higher activity, lower toxicity and lower residue, a series of novel anthranilic diamides containing dihydroisoxazoline and isoxazole was designed and synthesized. Their structures were characterized by means of melting points, proton nuclear magnetic resonance(¹H NMR), ¹³C NMR and high resolution mass spec-trometry(HRMS). According to the bioassay data, it was found that some of the title compounds exhibit moderate insecticidal activity and good antifungal activity. In particularly, compound 15b with a concentration of 50 mg/L shows a lethality rate of 60.0% against Mythimna separata Walker and a lethality rate of 50.0% against Culex pipiens pallens with a concentration of 1mg/L. Moreover, compound 15b showed good antifungal activities(58.8%, 77.1%, 70.7%, 55.3%, 60.7%, 65.4%) when against all the tested fungi(Cercospora arachidicola Hori, Physalospora piricola, Rhizoctonia cerealis, Bipolaris maydis, Watermelon anthracnose, Fusarium moniliforme). The effects of compounds 14h, 14j and 15b on the concentration of intracellular calcium ion([Ca²⁺]_i) in the central neurons of Mythimna separate Walker were well investigated via calcium imaging technique. The results demonstrate that the novel compounds can elevate the calcium concentration in the neurons, denoting that some new structures are potential modulators of the insect ryanodine receptor(RyR).     

含1H-吡啶和噻（二）唑的新型双杂环化合物的合成及其生物活性

以苯肼、乙酰乙酸乙酯和氨基杂环为原料，合成了两类含双杂环的新型吡唑甲 酰胺衍生物，其结构经元素分析、~1H NMR，MS及IR确证。初步的生物活性测试结 果表明：部分化合物对水稻纹枯病菌、小麦赤霉病菌和苹果轮纹病菌具有良好的抑 制效果。     

Synthesis and Biological Activities of Novel Anthranilic Diamides Analogues Containing Benzo[b]thiophene

A series of novel anthranilic diamides analogues containing benzo[b]thiophenyl ring was designed and synthesized. Their structures were characterized by melting points, ¹H nuclear magnetic resonance(¹H NMR) and high-resolution mass spectrometry(HRMS). The bioassay tests indicate that their insecticidal activities were weak to moderate. Antibacterial tests indicate that some of the compounds showed favourable activity in vitro against Physalospora piricola, Alternaria solani, Cercospora arachidicola, Gibberella sanbinetti and Phytophthora infestans at a dosage of 50 mg/L.     

Synthesis and Biological Evaluation of Novel Anthranilic Diamides Containing N-H/CH3-1H-Pyrazole

In order to systematically study the structure-activity relationship of anthranilic diamides and develop insecticides with simple structure and high efficiency, a series of novel anthranilic diamides containing N-H/CH₃-1H-pyrazole was designed and synthesized. Their chemical structures were characterized by ¹H NMR spectra, high resolution mass spectrometry(HRMS) or ¹³C NMR spectra. The preliminary bioassay results indicated that all title compounds displayed moderate insecticidal activity against oriental armyworm(Mythimna separata) at 200 mg/L and fungicidal activities against six kinds of fungi at 50 mg/L, especially compound 5i showed 50% insecticidal activity at 25 mg/L. In addition, some compounds exhibited certain antitumor activities. It was demonstrated that the introduction of CH₃ group into pyrazole ring was superior to H for the insecticidal activity.     

Design,Synthesis and Insecticidal Activity of Novel Anthranilic Diamides Containing Oxime Ester and Diacylhydrazine Moieties

Two series of novel anthranilic diamides containing oxime ester and diacylhydrazine moieties were designed and synthesized.Their structures were characterized by melting points,1H NMR,13C NMR and high resolution mass spectrometry（HRMS）.The single crystal structure of compound 7e was determined by X-ray diffraction and their evaluated insecticidal activity against oriental armyworm（Mythimna separata） indicates that some of the compounds exhibited moderate insecticidal activities.Among the 20 compounds,6a and 6b show 100％ larvicidal activity against Mythimna separate Walker at the test concentration of 100 mg/L.     

Design,Synthesis, and Biological Screening of Novel Anthranilic Diamides

Three series of new anthranilic diamide derivatives containing sulfide, N‐cyanomethylsulfilimine, and N‐cyanomethylsulfoximine groups were designed and synthesized by combining the active substructures of anthranilic diamides and sulfoxaflor. The structures of all newly synthesized compounds were confirmed by IR and ¹H/¹³C‐NMR, and some of them were confirmed by elemental analysis or HRMS too. The synthesized compounds were screened for their insecticidal and fungicidal activities. Bioasssay results indicated that some of the synthesized compounds possessed certain degrees of insecticidal activity against Mythimna separata. However, some compounds exhibited good fungicidal activity against Sclerotinia sclerotiorum.